10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

[x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2013

or

[  ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

        For the transition period from __________ to __________.

Commission file number: 001-9383

WESTAMERICA BANCORPORATION

(Exact Name of Registrant as Specified in Its Charter)

CALIFORNIA	94-2156203
(State or Other Jurisdiction of	(I.R.S. Employer
Incorporation or Organization)	Identification No.)

1108 FIFTH AVENUE, SAN RAFAEL, CALIFORNIA 94901

(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, Including Area Code (707) 863-6000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes [x] No [  ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes [x] No [  ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of "large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer [x]	Accelerated filer [  ]	Non-accelerated filer [  ]	Smaller reporting company [  ]
	(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

 Yes [  ]  No [x]

Indicate the number of shares outstanding of each of the registrant's classes of common stock, as of the latest practicable date:

Title of Class	Shares outstanding as of April 23, 2013
Common Stock,	26,980,635
No Par Value

TABLE OF CONTENTS

		Page
Forward Looking Statements		3
PART I - FINANCIAL INFORMATION
Item 1	Financial Statements	4
	Notes to Unaudited Consolidated Financial Statements	9
	Financial Summary	27
Item 2	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
Item 3	Quantitative and Qualitative Disclosures about Market Risk	47
Item 4	Controls and Procedures	47
PART II - OTHER INFORMATION
Item 1	Legal Proceedings	47
Item 1A	Risk Factors	48
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	48
Item 3	Defaults upon Senior Securities	48
Item 4	Mine Safety Disclosures	48
Item 5	Other Information	49
Item 6	Exhibits	49
Signatures		50
Exhibit Index		51
Exhibit 31.1 -	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rule 13a-14(a)/15d-14(a)	52
Exhibit 31.2 -	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rule 13a-14(a)/15d-14(a)	53
Exhibit 32.1 -	Certification of Chief Executive Officer Required by 18 U.S.C. Section 1350	54
Exhibit 32.2 -	Certification of Chief Financial Officer Required by 18 U.S.C. Section 1350	55

FORWARD-LOOKING STATEMENTS

This report on Form 10-Q contains forward-looking statements about Westamerica Bancorporation for which it claims the protection of the safe harbor provisions contained in the Private Securities Litigation Reform Act of 1995. Examples of forward-looking statements include, but are not limited to: (i) projections of revenues, expenses, income or loss, earnings or loss per share, the payment or nonpayment of dividends, capital structure and other financial items; (ii) statements of plans, objectives and expectations of the Company or its management or board of directors, including those relating to products or services; (iii) statements of future economic performance; and (iv) statements of assumptions underlying such statements.  Words such as "believes", "anticipates", "expects", "intends", "targeted", "projected", "continue", "remain", "will", "should", "may" and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements.

These forward-looking statements are based on Management’s current knowledge and belief and include information concerning the Company’s possible or assumed future financial condition and results of operations. A number of factors, some of which are beyond the Company’s ability to predict or control, could cause future results to differ materially from those contemplated. These factors include but are not limited to (1) the length and severity of current and potential future difficulties in the global, national and California economies and the effects of government efforts to address those difficulties; (2) liquidity levels in capital markets; (3) fluctuations in asset prices including, but not limited to stocks, bonds, real estate, and commodities; (4) the effect of acquisitions and integration of acquired businesses; (5) economic uncertainty created by terrorist threats and attacks on the United States, the actions taken in response, and the uncertain effect of these events on the national and regional economies; (6) changes in the interest rate environment; (7) changes in the regulatory environment; (8) competitive pressure in the banking industry; (9) operational risks including data processing system failures or fraud; (10) volatility of interest rate sensitive loans, deposits and investments; (11) asset/liability management risks and liquidity risks; (12) the effect of natural disasters, including earthquakes, fire, flood, drought, and other disasters, on the uninsured value of loan collateral, the financial condition of debtors and issuers of investment securities, the economic conditions affecting the Company’s market place, and commodities and asset values, and (13) changes in the securities markets. The reader is directed to the Company's annual report on Form 10-K for the year ended December 31, 2012, for further discussion of factors which could affect the Company's business and cause actual results to differ materially from those expressed in any forward-looking statement made in this report. The Company undertakes no obligation to update any forward-looking statements in this report.

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PART I - FINANCIAL INFORMATION

Item 1   Financial Statements

WESTAMERICA BANCORPORATION

CONSOLIDATED BALANCE SHEETS

(unaudited)

	At March 31,			At December 31,
	2013			2012
	(In thousands)
Assets:
Cash and due from banks	$	355,459		$	491,382
Investment securities available for sale		972,176			825,636
Investment securities held to maturity, with fair values of: $1,185,641 at March 31, 2013 and $1,184,557 at December 31, 2012		1,162,358			1,156,041
Purchased covered loans		353,034			372,283
Purchased non-covered loans		70,504			74,891
Originated loans		1,613,396			1,664,183
Allowance for loan losses		(30,354	)		(30,234	)
Total loans		2,006,580			2,081,123
Non-covered other real estate owned		9,671			12,661
Covered other real estate owned		13,713			13,691
Premises and equipment, net		38,519			38,639
Identifiable intangibles, net		22,042			23,261
Goodwill		121,673			121,673
Other assets		185,653			188,086
Total Assets	$	4,887,844		$	4,952,193
Liabilities:
Noninterest bearing deposits	$	1,621,887		$	1,676,071
Interest bearing deposits		2,540,063			2,556,421
Total deposits		4,161,950			4,232,492
Short-term borrowed funds		61,854			53,687
Federal Home Loan Bank advances		25,743			25,799
Term repurchase agreement		10,000			10,000
Debt financing		15,000			15,000
Other liabilities		54,317			55,113
Total Liabilities		4,328,864			4,392,091
Shareholders' Equity:
Common stock (no par value), authorized - 150,000 shares Issued and outstanding: 27,018 at March 31, 2013 and 27,213 at December 31, 2012		373,579			372,012
Deferred compensation		3,101			3,101
Accumulated other comprehensive income		15,372			14,625
Retained earnings		166,928			170,364
Total Shareholders' Equity		558,980			560,102
Total Liabilities and Shareholders' Equity	$	4,887,844		$	4,952,193

See accompanying notes to unaudited consolidated financial statements.

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WESTAMERICA BANCORPORATION

CONSOLIDATED STATEMENTS OF INCOME

(unaudited)

	For the Three Months Ended March 31,
	2013		2012
	(In thousands, except per share data)
Interest and Fee Income:
Loans	$	27,399	$	35,656
Investment securities available for sale		5,336		4,788
Investment securities held to maturity		7,730		7,854
Total Interest and Fee Income		40,465		48,298
Interest Expense:
Deposits		899		1,187
Short-term borrowed funds		11		27
Term repurchase agreement		24		25
Federal Home Loan Bank advances		118		120
Debt financing		200		200
Total Interest Expense		1,252		1,559
Net Interest Income		39,213		46,739
Provision for Loan Losses		2,800		2,800
Net Interest Income After Provision For Loan Losses		36,413		43,939
Noninterest Income:
Service charges on deposit accounts		6,542		7,095
Merchant processing services		2,409		2,393
Debit card fees		1,358		1,163
ATM processing fees		705		933
Trust fees		568		489
Financial services commissions		180		171
Other		2,516		2,425
Total Noninterest Income		14,278		14,669
Noninterest Expense:
Salaries and related benefits		14,403		15,046
Occupancy		3,886		3,934
Outsourced data processing services		2,157		2,083
Amortization of identifiable intangibles		1,219		1,402
Furniture and equipment		880		851
Courier service		741		785
Professional fees		635		767
Other real estate owned		334		230
Other		4,422		4,936
Total Noninterest Expense		28,677		30,034
Income Before Income Taxes		22,014		28,574
Provision for income taxes		4,743		7,569
Net Income	$	17,271	$	21,005
Average Common Shares Outstanding		27,145		28,051
Diluted Average Common Shares Outstanding		27,157		28,111
Per Common Share Data:
Basic earnings	$	0.64	$	0.75
Diluted earnings		0.64		0.75
Dividends paid		0.37		0.37

See accompanying notes to unaudited consolidated financial statements.

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WESTAMERICA BANCORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited)

	For the Three Months Ended March 31,
	2013			2012
	(In thousands)
Net income	$	17,271		$	21,005
Other comprehensive income:
Increase in net unrealized gains on securities available for sale		1,272			1,384
Deferred tax expense		(534	)		(582	)
Increase in net unrealized gains on securities available for sale, net of tax		738			802
Post-retirement benefit transition obligation amortization		15			15
Deferred tax expense		(6	)		(6	)
Post-retirement benefit transition obligation amortization, net of tax		9			9
Total other comprehensive income		747			811
Total comprehensive income	$	18,018		$	21,816

See accompanying notes to unaudited consolidated financial statements.

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WESTAMERICA BANCORPORATION

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

(unaudited)

	Common Shares Outstanding			Common Stock			Accumulated Deferred Compensation			Accumulated Other Comprehensive Income		Retained Earnings			Total
	(In thousands)
Balance, December 31, 2011		28,150		$	377,775		$	3,060		$	11,369	$	166,437		$	558,641
Net income for the period													21,005			21,005
Other comprehensive income											811					811
Exercise of stock options		15			641											641
Tax benefit increase upon exercise of stock options					4											4
Restricted stock activity					220			(220	)							-
Stock based compensation					435											435
Stock awarded to employees		1			45											45
Purchase and retirement of stock		(249	)		(3,370	)							(8,290	)		(11,660	)
Dividends													(10,394	)		(10,394	)
Balance, March 31, 2012		27,917		$	375,750		$	2,840		$	12,180	$	168,758		$	559,528
Balance, December 31, 2012		27,213		$	372,012		$	3,101		$	14,625	$	170,364		$	560,102
Net income for the period													17,271			17,271
Other comprehensive income											747					747
Exercise of stock options		151			6,156											6,156
Tax benefit decrease upon exercise of stock options					(191	)										(191	)
Stock based compensation					379											379
Stock awarded to employees		1			42											42
Purchase and retirement of stock		(347	)		(4,819	)							(10,623	)		(15,442	)
Dividends													(10,084	)		(10,084	)
Balance, March 31, 2013		27,018		$	373,579		$	3,101		$	15,372	$	166,928		$	558,980

See accompanying notes to unaudited consolidated financial statements.

- 7 -

WESTAMERICA BANCORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

	For the Three Months Ended March 31,
	2013			2012
	(In thousands)
Operating Activities:
Net income	$	17,271		$	21,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		4,322			3,499
Loan loss provision		2,800			2,800
Net amortization of deferred loan fees		(80	)		(126	)
(Increase) decrease in interest income receivable		(199	)		733
(Increase) decrease in deferred tax asset		(673	)		183
Increase in other assets		(663	)		(4,655	)
Stock option compensation expense		379			435
Tax benefit decrease (increase) upon exercise of stock options		191			(4	)
Increase in income taxes payable		5,482			7,386
Increase in interest expense payable		252			149
(Decrease) increase in other liabilities		(6,726	)		1,771
Gain on sale of other assets		(274	)		(150	)
Loss on sale of premises and equipment		6			-
Originations of mortgage loans for resale		(90	)		-
Proceeds from sale of mortgage loans originated for resale		92			-
Net gain on sale of foreclosed assets		(181	)		(1,779	)
Writedown of foreclosed assets		592			1,712
Net Cash Provided by Operating Activities		22,501			32,959
Investing Activities:
Net repayments of loans		72,880			95,748
Proceeds from FDIC* loss-sharing agreement		1,344			2,628
Purchases of investment securities available for sale		(175,901	)		(25,418	)
Proceeds from sale/maturity/calls of securities available for sale		30,166			31,317
Purchases of investment securities held to maturity		(59,677	)		(151,958	)
Proceeds from maturity/calls of securities held to maturity		51,876			48,123
Purchases of premises and equipment		(617	)		(1,940	)
Proceeds from sale of FRB/FHLB** stock		738			451
Proceeds from sale of foreclosed assets		2,611			10,277
Net Cash (Used in) Provided by Investing Activities		(76,580	)		9,228
Financing Activities:
Net change in deposits		(70,450	)		(716	)
Net change in short-term borrowings		8,167			(9,005	)
Exercise of stock options/issuance of shares		6,156			641
Tax benefit (decrease) increase upon exercise of stock options		(191	)		4
Retirement of common stock including repurchases		(15,442	)		(11,660	)
Common stock dividends paid		(10,084	)		(10,394	)
Net Cash Used in Financing Activities		(81,844	)		(31,130	)
Net Change In Cash and Due from Banks		(135,923	)		11,057
Cash and Due from Banks at Beginning of Period		491,382			530,045
Cash and Due from Banks at End of Period	$	355,459		$	541,102
Supplemental Cash Flow Disclosures:
Supplemental disclosure of noncash activities:
Loan collateral transferred to other real estate owned	$	640		$	1,583
Supplemental disclosure of cash flow activities:
Interest paid for the period		1,132			1,642
Income tax payments for the period		126			-

See accompanying notes to unaudited consolidated financial statements.

* Federal Deposit Insurance Corporation ("FDIC")

** Federal Reserve Bank/Federal Home Loan Bank ("FRB/FHLB")

- 8 -

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Note 1: Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission. The results of operations reflect interim adjustments, all of which are of a normal recurring nature and which, in the opinion of Management, are necessary for a fair presentation of the results for the interim periods presented. The interim results for the three months ended March 31, 2013 and 2012 are not necessarily indicative of the results expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes as well as other information included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012.

The Company has evaluated events and transactions subsequent to the balance sheet date. Based on this evaluation, the Company is not aware of any events or transactions that occurred subsequent to the balance sheet date but prior to filing that would require recognition or disclosure in its unaudited consolidated financial statements.

Note 2: Accounting Policies

The Company’s accounting policies are discussed in Note 1 to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.  Certain amounts in prior periods have been reclassified to conform to the current presentation.

Certain accounting policies underlying the preparation of these financial statements require Management to make estimates and judgments. These estimates and judgments may significantly affect reported amounts of assets and liabilities, revenues and expenses, and disclosures of contingent assets and liabilities. Management exercises judgment to estimate the appropriate level of the allowance for credit losses, the acquisition date fair value of purchased loans, and the evaluation of other than temporary impairment of investment securities, which are discussed in the Company’s accounting policies.

Recently Adopted Accounting Standards

FASB ASU 2012-06, Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution, was issued October 2012 to provide guidance for consistently measuring an indemnification asset subsequent to acquisition.  Subsequent accounting for changes in the measurement of the indemnification asset should be on the same basis as a change in the assets subject to indemnification. Any amortization of changes in value is limited to the shorter of the contractual term of the indemnification agreement or the remaining life of the indemnified assets. The Company’s historical accounting treatment is consistent with ASU 2012-06, therefore there was no effect on the Company’s financial statements at January 1, 2013, when adopted.

FASB ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, was issued February 2013 requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail about those amounts. The adoption of the update did not have a material effect on the Company’s financial statements at January 1, 2013, the date adopted. The Company’s only item reclassified out of other comprehensive income to net income is the amortization of unrecognized post retirement benefit transition obligation, which is immaterial for purposes of disclosure.

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Note 3:  Investment Securities

The amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of investment securities available for sale follows:

	Investment Securities Available for Sale At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,516	$	31	$	-		$	3,547
Securities of U.S. Government sponsored entities		44,236		166		(10	)		44,392
Residential mortgage-backed securities		45,756		3,157		(3	)		48,910
Commercial mortgage-backed securities		3,827		63		-			3,890
Obligations of States and political subdivisions		195,326		13,040		(275	)		208,091
Residential collateralized mortgage obligations		268,282		2,140		(509	)		269,913
Asset-backed securities		15,686		25		(98	)		15,613
FHLMC and FNMA stock		825		4,872		(3	)		5,694
Corporate securities		365,847		3,739		(673	)		368,913
Other securities		2,058		1,227		(72	)		3,213
Total	$	945,359	$	28,460	$	(1,643	)	$	972,176

The amortized cost, unrealized gains and losses, and fair value of investment securities held to maturity follows:

	Investment Securities Held to Maturity At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	2,747	$	28	$	-		$	2,775
Residential mortgage-backed securities		68,417		1,774		(14	)		70,177
Obligations of States and political subdivisions		720,514		18,378		(2,913	)		735,979
Residential collateralized mortgage obligations		370,680		6,401		(371	)		376,710
Total	$	1,162,358	$	26,581	$	(3,298	)	$	1,185,641

The amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of investment securities available for sale follows:

	Investment Securities Available for Sale At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,520	$	38	$	-		$	3,558
Securities of U.S. Government sponsored entities		49,335		207		(17	)		49,525
Residential mortgage-backed securities		53,078		3,855		(1	)		56,932
Commercial mortgage-backed securities		4,076		69		-			4,145
Obligations of States and political subdivisions		200,769		14,730		(252	)		215,247
Residential collateralized mortgage obligations		219,613		1,786		(294	)		221,105
Asset-backed securities		16,130		18		(143	)		16,005
FHLMC and FNMA stock		824		2,061		(5	)		2,880
Corporate securities		250,655		3,009		(826	)		252,838
Other securities		2,091		1,370		(60	)		3,401
Total	$	800,091	$	27,143	$	(1,598	)	$	825,636

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The amortized cost, unrealized gains and losses, and fair value of investment securities held to maturity follows:

	Investment Securities Held to Maturity At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	3,232	$	43	$	-		$	3,275
Residential mortgage-backed securities		72,807		2,090		(10	)		74,887
Obligations of States and political subdivisions		680,802		23,004		(1,235	)		702,571
Residential collateralized mortgage obligations		399,200		5,185		(561	)		403,824
Total	$	1,156,041	$	30,322	$	(1,806	)	$	1,184,557

The amortized cost and fair value of investment securities by contractual maturity are shown in the following tables at the dates indicated:

	At March 31, 2013
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	79,377	$	80,036	$	10,458	$	10,733
Over 1 to 5 years		371,270		375,009		166,385		170,445
Over 5 to 10 years		70,880		74,190		265,198		272,601
Over 10 years		103,084		111,321		281,220		284,975
Subtotal		624,611		640,556		723,261		738,754
Mortgage-backed securities and residential collateralized mortgage obligations		317,865		322,713		439,097		446,887
Other securities		2,883		8,907		-		-
Total	$	945,359	$	972,176	$	1,162,358	$	1,185,641

	At December 31, 2012
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	40,380	$	40,686	$	10,265	$	10,496
Over 1 to 5 years		309,293		312,480		167,162		171,769
Over 5 to 10 years		59,817		63,540		227,603		236,608
Over 10 years		110,919		120,467		279,004		286,973
Subtotal		520,409		537,173		684,034		705,846
Mortgage-backed securities and residential collateralized mortgage obligations		276,767		282,182		472,007		478,711
Other securities		2,915		6,281		-		-
Total	$	800,091	$	825,636	$	1,156,041	$	1,184,557

Expected maturities of mortgage-backed securities can differ from contractual maturities because borrowers have the right to call or prepay obligations with or without call or prepayment penalties. In addition, such factors as prepayments and interest rates may affect the yield on the carrying value of mortgage-backed securities. At March 31, 2013 and December 31, 2012, the Company had no high-risk collateralized mortgage obligations as defined by regulatory guidelines.

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An analysis of gross unrealized losses of investment securities available for sale follows:

	Investment Securities Available for Sale At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,990	$	(10	)	$	-	$	-		$	9,990	$	(10	)
Residential mortgage-backed securities		64		(1	)		884		(2	)		948		(3	)
Obligations of States and political subdivisions		3,107		(23	)		9,030		(252	)		12,137		(275	)
Residential collateralized mortgage obligations		85,377		(509	)		-		-			85,377		(509	)
Asset-backed securities		-		-			5,449		(98	)		5,449		(98	)
FHLMC and FNMA stock		-		-			3		(3	)		3		(3	)
Corporate securities		68,203		(386	)		19,713		(287	)		87,916		(673	)
Other securities		-		-			1,928		(72	)		1,928		(72	)
Total	$	166,741	$	(929	)	$	37,007	$	(714	)	$	203,748	$	(1,643	)

An analysis of gross unrealized losses of investment securities held to maturity follows:

	Investment Securities Held to Maturity At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	255	$	-		$	7,775	$	(14	)	$	8,030	$	(14	)
Obligations of States and political subdivisions		153,086		(2,782	)		8,887		(131	)		161,973		(2,913	)
Residential collateralized mortgage obligations		10,268		(167	)		12,770		(204	)		23,038		(371	)
Total	$	163,609	$	(2,949	)	$	29,432	$	(349	)	$	193,041	$	(3,298	)

The unrealized losses on the Company’s investment securities were caused by market conditions for these types of investments.  The Company evaluates securities on a quarterly basis including changes in security ratings issued by ratings agencies, changes in the financial condition of the issuer, and, for mortgage-related and asset-backed securities, delinquency and loss information with respect to the underlying collateral, changes in the levels of subordination for the Company’s particular position within the repayment structure, and remaining credit enhancement as compared to expected credit losses of the security. Substantially all of these securities continue to be investment grade rated by one or more major rating agencies. In addition to monitoring credit rating agency evaluations, Management performs its own evaluations regarding the credit worthiness of the issuer or the securitized assets underlying asset backed securities.

The Company does not intend to sell any investments and has concluded that it is more likely than not that it will not be required to sell the investments prior to recovery of the amortized cost basis. Therefore, the Company does not consider these investments to be other-than-temporarily impaired as of March 31, 2013.

The fair values of the investment securities could decline in the future if the general economy deteriorates, credit ratings decline, the issuer’s financial condition deteriorates, or the liquidity for securities declines. As a result, other than temporary impairments may occur in the future.

As of March 31, 2013, $872,470 thousand of investment securities were pledged to secure public deposits, short-term borrowed funds, and term repurchase agreements, compared to $850,421 thousand at December 31, 2012.

- 12 -

An analysis of gross unrealized losses of investment securities available for sale follows:

	Investment Securities Available for Sale At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,983	$	(17	)	$	-	$	-		$	9,983	$	(17	)
Residential mortgage-backed securities		103		(1	)		11		-			114		(1	)
Residential collateralized mortgage obligations		72,803		(294	)		-		-			72,803		(294	)
Obligations of States and political subdivisions		2,080		(23	)		8,928		(229	)		11,008		(252	)
Asset-backed securities		-		-			5,828		(143	)		5,828		(143	)
FHLMC and FNMA stock		-		-			1		(5	)		1		(5	)
Corporate securities		53,570		(423	)		24,597		(403	)		78,167		(826	)
Other securities		-		-			1,940		(60	)		1,940		(60	)
Total	$	138,539	$	(758	)	$	41,305	$	(840	)	$	179,844	$	(1,598	)

An analysis of gross unrealized losses of investment securities held to maturity follows:

	Investment Securities Held to Maturity At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	113	$	-		$	664	$	(10	)	$	777	$	(10	)
Residential collateralized mortgage obligations		26,683		(386	)		9,353		(175	)		36,036		(561	)
Obligations of States and political subdivisions		69,839		(1,205	)		4,275		(30	)		74,114		(1,235	)
Total	$	96,635	$	(1,591	)	$	14,292	$	(215	)	$	110,927	$	(1,806	)

The following table provides information about the amount of interest income from taxable and non-taxable investment securities:

	For the Three Months Ended March 31,
	2013		2012
	(In thousands)
Taxable:
Mortgage related securities	$	3,561	$	3,364
Other		1,974		1,326
Total taxable		5,535		4,690
Tax-exempt		7,531		7,952
Total interest income from investment securities	$	13,066	$	12,642

- 13 -

Note 4: Loans and Allowance for Credit Losses

A summary of the major categories of loans outstanding is shown in the following table.

	At March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	318,502		$	625,185		$	7,920		$	213,919		$	447,870		$	1,613,396
Purchased covered loans:
Impaired		293			6,899			1,737			-			255			9,184
Non impaired		57,589			232,854			4,942			8,816			62,309			366,510
Purchase discount		(6,958	)		(13,600	)		(188	)		(434	)		(1,480	)		(22,660	)
Purchased non-covered loans:
Impaired		1,244			6,111			-			-			297			7,652
Non impaired		9,367			37,548			1,369			2,205			16,949			67,438
Purchase discount		(913	)		(1,750	)		(95	)		(262	)		(1,566	)		(4,586	)
Total	$	379,124		$	893,247		$	15,685		$	224,244		$	524,634		$	2,036,934

	At December 31, 2012
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	340,116		$	632,927		$	7,984		$	222,458		$	460,698		$	1,664,183
Purchased covered loans:
Impaired		308			7,585			1,824			-			257			9,974
Non impaired		59,135			247,534			5,462			9,374			66,932			388,437
Purchase discount		(8,459	)		(15,140	)		(279	)		(433	)		(1,817	)		(26,128	)
Purchased non-covered loans:
Impaired		1,261			6,763			-			-			297			8,321
Non impaired		9,840			38,673			1,619			3,110			18,554			71,796
Purchase discount		(870	)		(1,748	)		(95	)		(474	)		(2,039	)		(5,226	)
Total	$	401,331		$	916,594		$	16,515		$	234,035		$	542,882		$	2,111,357

Changes in the carrying amount of impaired purchased covered loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased covered loans	(In thousands)
Carrying amount at the beginning of the period	$	7,865		$	18,591
Reductions during the period		(284	)		(10,726	)
Carrying amount at the end of the period	$	7,581		$	7,865

Changes in the carrying amount of impaired purchased non-covered loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased non-covered loans	(In thousands)
Carrying amount at the beginning of the period	$	6,764		$	15,572
Reductions during the period		(804	)		(8,808	)
Carrying amount at the end of the period	$	5,960		$	6,764

- 14 -

Changes in the accretable yield for purchased loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Accretable yield:	(In thousands)
Balance at the beginning of the period	$	4,948		$	9,990
Reclassification from nonaccretable difference		8,154			12,121
Accretion		(3,641	)		(17,163	)
Disposals and other		-			-
Balance at the end of the period	$	9,461		$	4,948
Accretion	$	(3,641	)	$	(17,163	)
Reduction in FDIC indemnification asset		2,782			13,207
(Increase) in interest income	$	(859	)	$	(3,956	)

The following summarizes activity in the allowance for credit losses:

	Allowance for Credit Losses For the Three Months Ended March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment and Other			Purchased Non-covered Loans		Purchased Covered Loans			Unallocated		Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,445		$	10,063		$	484		$	380		$	3,194		$	-	$	1,005		$	8,663	$	30,234
Additions:
Provision		531			994			(4	)		246			281			-		87			665		2,800
Deductions:
Chargeoffs		(1,902	)		(113	)		-			(87	)		(1,308	)		-		(359	)		-		(3,769	)
Recoveries		462			21			-			-			601			-		5			-		1,089
Net loan losses		(1,440	)		(92	)		-			(87	)		(707	)		-		(354	)		-		(2,680	)
Balance at end of period		5,536			10,965			480			539			2,768			-		738			9,328		30,354
Liability for off-balance sheet credit exposure		1,663			3			-			-			453			-		-			574		2,693
Total allowance for credit losses	$	7,199		$	10,968		$	480		$	539		$	3,221		$	-	$	738		$	9,902	$	33,047

	Allowance for Credit Losses For the Three Months Ended March 31, 2012
	Commercial			Commercial Real Estate			Construction		Residential Real Estate			Consumer Installment and Other			Purchased Covered Loans			Unallocated			Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,012		$	10,611		$	2,342	$	781		$	3,072		$	-		$	9,779		$	32,597
Additions:
Provision		1,275			1,764			411		734			627			490			(2,501	)		2,800
Deductions:
Chargeoffs		(862	)		(948	)		-		(870	)		(1,653	)		(365	)		-			(4,698	)
Recoveries		389			-			2		-			779			14			-			1,184
Net loan losses		(473	)		(948	)		2		(870	)		(874	)		(351	)		-			(3,514	)
Balance at end of period		6,814			11,427			2,755		645			2,825			139			7,278			31,883
Liability for off-balance sheet credit exposure		1,643			-			26		-			189			-			835			2,693
Total allowance for credit losses	$	8,457		$	11,427		$	2,781	$	645		$	3,014		$	139		$	8,113		$	34,576

- 15 -

The recorded investment in loans evaluated for impairment follows:

	Recorded Investment in Loans Evaluated for Impairment At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	886	$	584	$	-	$	-	$	-	$	-	$	723	$	-	$	2,193
Collectively evaluated for impairment		6,313		10,384		480		539		3,221		-		15		9,902		30,854
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	7,199	$	10,968	$	480	$	539	$	3,221	$	-	$	738	$	9,902	$	33,047
Carrying value of loans:
Individually evaluated for impairment	$	2,171	$	3,319	$	-	$	-	$	-	$	5,196	$	16,086	$	-	$	26,772
Collectively evaluated for impairment		316,331		621,866		7,920		213,919		447,870		59,348		329,367		-		1,996,621
Purchased loans with evidence of credit deterioration		-		-		-		-		-		5,960		7,581		-		13,541
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504	$	353,034	$	-	$	2,036,934

	Recorded Investment in Loans Evaluated for Impairment At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	1,865	$	134	$	-	$	-	$	-	$	-	$	753	$	-	$	2,752
Collectively evaluated for impairment		6,314		9,938		484		380		3,613		-		252		9,194		30,175
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	8,179	$	10,072	$	484	$	380	$	3,613	$	-	$	1,005	$	9,194	$	32,927
Carrying value of loans:
Individually evaluated for impairment	$	5,153	$	4,161	$	-	$	-	$	-	$	3,029	$	16,680	$	-	$	29,023
Collectively evaluated for impairment		334,963		628,766		7,984		222,458		460,698		65,098		347,738		-		2,067,705
Purchased loans with evidence of credit deterioration		-		-		-		-		-		6,764		7,865		-		14,629
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891	$	372,283	$	-	$	2,111,357

The Bank’s customers are small businesses, professionals and consumers. Given the scale of these borrowers, corporate credit rating agencies do not evaluate the borrowers’ financial condition. The Bank maintains a Loan Review Department which reports directly to the Board of Directors. The Loan Review Department performs independent evaluations of loans and assigns credit risk grades to evaluated loans using grading standards employed by bank regulatory agencies. Loans judged to carry lower-risk attributes are assigned a “pass” grade, with a minimal likelihood of loss. Loans judged to carry higher-risk attributes are referred to as “classified loans,” and are further disaggregated, with increasing expectations for loss recognition, as “substandard,” “doubtful,” and “loss.” Loan Review evaluations occur every calendar quarter.  If the Bank becomes aware of deterioration in a borrower’s performance or financial condition between Loan Review examinations, assigned risk grades will be re-evaluated promptly. Credit risk grades assigned by the Loan Review Department are subject to review by the Bank’s regulatory authority during regulatory examinations.

The following summarizes the credit risk profile by internally assigned grade:

	Credit Risk Profile by Internally Assigned Grade At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans			Purchased Covered Loans (1)			Total
	(In thousands)
Grade:
Pass	$	305,285	$	590,834	$	7,457	$	211,445	$	446,365	$	48,379		$	253,854		$	1,863,619
Substandard		10,798		34,351		463		2,474		1,224		25,172			121,300			195,782
Doubtful		2,419		-		-		-		31		1,539			455			4,444
Loss		-		-		-		-		250		-			85			335
Default risk purchase discount		-		-		-		-		-		(4,586	)		(22,660	)		(27,246	)
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504		$	353,034		$	2,036,934

(1) Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

- 16 -

	Credit Risk Profile by Internally Assigned Grade At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real  Estate		Consumer  Installment and Other		Purchased Non- covered Loans			Purchased  Covered  Loans (1)			Total
	(In thousands)
Grade:
Pass	$	324,452	$	599,472	$	7,518	$	219,655	$	459,076	$	51,901		$	274,976		$	1,937,050
Substandard		11,413		33,455		466		2,803		1,158		27,066			122,815			199,176
Doubtful		4,251		-		-		-		46		1,145			470			5,912
Loss		-		-		-		-		418		5			150			573
Default risk purchase discount		-		-		-		-		-		(5,226	)		(26,128	)		(31,354	)
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891		$	372,283		$	2,111,357

(1) Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

The following tables summarize loans by delinquency and nonaccrual status:

	Summary of Loans by Delinquency and Nonaccrual Status At March 31, 2013
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	313,381	$	2,493	$	-	$	2,628	$	318,502
Commercial real estate		613,517		6,427		-		5,241		625,185
Construction		7,920		-		-		-		7,920
Residential real estate		213,353		333		-		233		213,919
Consumer installment & other		444,284		3,224		305		57		447,870
Total originated loans		1,592,455		12,477		305		8,159		1,613,396
Purchased non-covered loans		60,242		1,150		-		9,112		70,504
Purchased covered loans		330,958		10,111		88		11,877		353,034
Total	$	1,983,655	$	23,738	$	393	$	29,148	$	2,036,934

	Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2012
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	333,474	$	1,032	$	-	$	5,610	$	340,116
Commercial real estate		616,276		10,750		-		5,901		632,927
Construction		7,984		-		-		-		7,984
Residential real estate		220,032		2,193		-		233		222,458
Consumer installment & other		455,007		5,205		455		31		460,698
Total originated loans		1,632,773		19,180		455		11,775		1,664,183
Purchased non-covered loans		65,567		1,821		4		7,499		74,891
Purchased covered loans		352,619		6,488		155		13,021		372,283
Total	$	2,050,959	$	27,489	$	614	$	32,295	$	2,111,357

The following is a summary of the effect of nonaccrual loans on interest income:

	For the Three Months Ended March 31,
	2013			2012
	(In thousands)
Interest income that would have been recognized had the loans performed in accordance with their original terms	$	753		$	1,064
Less: Interest income recognized on nonaccrual loans		(375	)		(842	)
Total (addition) reduction of interest income	$	378		$	222

- 17 -

There were no commitments to lend additional funds to borrowers whose loans were on nonaccrual status at March 31, 2013 and December 31, 2012.

The following summarizes impaired loans:

	Impaired Loans At March 31, 2013
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	2,277	$	8,187	$	-
Commercial real estate		26,155		30,081		-
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-
Impaired loans with an allowance recorded:
Commercial		9,952		11,582		1,609
Commercial real estate		2,686		2,686		584
Total:
Commercial	$	12,229	$	19,769	$	1,609
Commercial real estate		28,841		32,767		584
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-

	Impaired Loans At December 31, 2012
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	3,100	$	9,506	$	-
Commercial real estate		24,135		27,972		-
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-
Impaired loans with an allowance recorded:
Commercial		12,129		13,739		2,588
Commercial real estate		4,038		4,038		164
Total:
Commercial	$	15,229	$	23,245	$	2,588
Commercial real estate		28,173		32,010		164
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-

Impaired loans may include troubled debt restructured loans. Impaired loans at March 31, 2013, included $8,707 thousand of restructured loans, including $2,976 thousand that were on nonaccrual status. Impaired loans at December 31, 2012, included $6,678 thousand of restructured loans, including $988 thousand that were on nonaccrual status.

- 18 -

	Impaired Loans For the Three Months Ended March 31,
	2013				2012
	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
	(In thousands)
Commercial	$	13,729	$	54	$	6,576	$	50
Commercial real estate		28,507		300		32,119		378
Construction		2,111		26		6,461		100
Residential real estate		685		-		311		-
Consumer installment and other		1,963		7		2,894		18
Total	$	46,995	$	387	$	48,361	$	546

The following table provides information on troubled debt restructurings:

	Troubled Debt Restructurings At March 31, 2013
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,172	$	786
Commercial real estate		3		7,383		7,535		-
Total		6	$	8,701	$	8,707	$	786

	Troubled Debt Restructurings At December 31, 2012
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,196	$	797
Commercial real estate		2		5,391		5,482		-
Total		5	$	6,709	$	6,678	$	797

During the three months ended March 31, 2013 and 2012, the Company modified one loan in each period with carrying values of $2,009 thousand and $429 thousand, respectively that was considered a troubled debt restructuring. The concession granted in the restructuring completed in the first quarter 2013 consisted of modification of payment terms to lower the interest rate and extend the maturity date to allow for deferred principal repayment. The concession granted in the first quarter 2012 consisted of modification of payment terms to extend the maturity date to allow for deferred principal repayment. During the three months ended March 31, 2013 and 2012, no troubled debt restructured loans defaulted.

The Company pledges loans to secure borrowings from the Federal Home Loan Bank (“FHLB”). The carrying value of the FHLB advances was $25,743 thousand and $25,799 thousand at March 31, 2013 and December 31, 2012, respectively. The loans restricted due to collateral requirements approximate $28,843 thousand and $32,084 thousand at March 31, 2013 and December 31, 2012, respectively. The amount of loans pledged exceeds collateral requirements. The FHLB does not have the right to sell or repledge such loans.

There were no loans held for sale at March 31, 2013 and December 31, 2012.

- 19 -

Note 5: Concentration of Credit Risk

The Company’s business activity is with customers in Northern and Central California. The loan portfolio is well diversified within the Company’s geographic market, although the Company has significant credit arrangements that are secured by real estate collateral. In addition to real estate loans outstanding as disclosed in Note 4, the Company had loan commitments and standby letters of credit related to real estate loans of $67,431 thousand and $69,345 thousand at March 31, 2013 and December 31, 2012, respectively. The Company requires collateral on all real estate loans with loan-to-value ratios at origination generally no greater than 75% on commercial real estate loans and no greater than 80% on residential real estate loans at origination.

Note 6: Other Assets

Other assets consisted of the following:

	At March 31, 2013		At December 31, 2012
	(In thousands)
Cost method equity investments:
Federal Reserve Bank stock (1)	$	14,069	$	14,069
Federal Home Loan Bank stock (2)		6,615		7,353
Other investments		376		376
Total cost method equity investments		21,060		21,798
Corporate/bank-owned life insurance		45,535		45,579
Deferred taxes		42,645		42,449
LIHTC investments		20,119		20,631
Interest receivable		20,473		20,274
FDIC receivable		12,162		13,847
Prepaid assets		11,814		11,679
Other assets		11,845		11,829
Total other assets	$	185,653	$	188,086

(1) A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in a sum equal to six percent of the bank’s paid-up capital stock and surplus. One-half of the amount of the bank's subscription shall be paid to the FRB and the remaining half will be subject to call when deemed necessary by the Board of Governors of the Federal Reserve System.

(2) Borrowings from the Federal Home Loan Bank (FHLB) must be supported by capital stock holdings. The minimum activity-based requirement is 4.7% of the outstanding advances. The requirement may be adjusted from time to time by the FHLB within limits established in the FHLB's Capital Plan.

Note 7: Goodwill and Identifiable Intangible Assets

The Company has recorded goodwill and other identifiable intangibles associated with purchase business combinations. Goodwill is not amortized, but is periodically evaluated for impairment. The Company did not recognize impairment during the three months ended March 31, 2013 and March 31, 2012. Identifiable intangibles are amortized to their estimated residual values over their expected useful lives. Such lives and residual values are also periodically reassessed to determine if any amortization period adjustments are indicated. During the three months ended March 31, 2013 and March 31, 2012, no such adjustments were recorded.

The carrying values of goodwill were (in thousands):

March 31, 2013	$	121,673
December 31, 2012	$	121,673

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The gross carrying amount of identifiable intangible assets and accumulated amortization was:

	At March 31, 2013					At December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Core Deposit Intangibles	$	56,808	$	(36,045	)	$	56,808	$	(34,938	)
Merchant Draft Processing Intangible		10,300		(9,021	)		10,300		(8,909	)
Total Identifiable Intangible Assets	$	67,108	$	(45,066	)	$	67,108	$	(43,847	)

As of March 31, 2013, the current year and estimated future amortization expense for identifiable intangible assets was:

	Core Deposit Intangibles		Merchant Draft Processing Intangible		Total
	(In thousands)
Three months ended March 31, 2013 (actual)	$	1,107	$	112	$	1,219
Estimate for year ended December 31, 2013		4,304		400		4,704
2014		3,946		324		4,270
2015		3,594		262		3,856
2016		3,292		212		3,504
2017		2,913		164		3,077
2018		1,892		29		1,921

Note 8: Deposits and Borrowed Funds

Deposits totaled $4,161,950 thousand at March 31, 2013, compared with $4,232,492 thousand at December 31, 2012. The following table provides additional detail regarding deposits.

	Deposits
	At March 31, 2013		At December 31, 2012
	(In thousands)
Noninterest-bearing	$	1,621,887	$	1,676,071
Interest-bearing:
Transaction		771,268		748,818
Savings		1,160,976		1,165,032
Time		607,819		642,571
Total deposits	$	4,161,950	$	4,232,492

Demand deposit overdrafts of $2,942 thousand and $6,307 thousand were included as loan balances at March 31, 2013 and December 31, 2012, respectively. Interest expense for aggregate time deposits with individual account balances in excess of $100 thousand was $304 thousand in the first quarter 2013 and $423 thousand in the first quarter 2012.

Short-term borrowed funds of $61,854 thousand at March 31, 2013 represent securities sold under agreements to repurchase the securities. As the Company is obligated to repurchase the securities, the transfer of the securities is accounted for as a secured borrowing rather than a sale. Securities sold under repurchase agreements are held in the custody of independent securities brokers. The amount of the securities approximates $112,182 thousand at March 31, 2013. The short-term borrowed funds mature on an overnight basis.

FHLB advances with carrying value of $25,743 thousand at March 31, 2013 are secured by $28,843 thousand of residential real estate loans and $9,701 of securities at March 31, 2013. The FHLB advances are due in full upon their maturity dates: $5,000 thousand mature in December 2013 and $20,000 thousand mature in January 2015. The FHLB advances may be paid off prior to such maturity dates subject to prepayment fees.

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The $10,000 thousand term repurchase agreement at March 31, 2013 represents securities sold under an agreement to repurchase the securities. As the Company is obligated to repurchase the securities, the transfer of the securities is accounted for as a secured borrowing rather than a sale. Securities sold under repurchase agreements are held in the custody of independent securities brokers. The carrying amount of the related securities is approximately $14,621 thousand at March 31, 2013. The term repurchase agreement matures in full in August 2014.

The Company has a $35,000 thousand unsecured line of credit which had no outstanding balance at March 31, 2013, and a variable interest rate of 2.0% per annum with interest payable monthly on outstanding advances. Advances may be made up to the unused credit limit under the line of credit through March 19, 2014.

Debt financing of $15,000 thousand is a note issued by Westamerica Bancorporation on October 31, 2003 which matures October 31, 2013. Interest of 5.31% per annum is payable semiannually on April 30 and October 31, with principal due at maturity. The note is subject to financial covenants requiring the Company to maintain, at all times, certain minimum levels of consolidated tangible net worth and maximum levels of capital debt. The Company believes it is in compliance with all of the covenants required by the note as of March 31, 2013.

Note 9:  Fair Value Measurements

The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures.  Available for sale investment securities are recorded at fair value on a recurring basis.  Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as certain loans held for investment, investment securities held to maturity, and other assets.  These nonrecurring fair value adjustments typically involve the lower-of-cost-or-fair value accounting of individual assets.

In accordance with the Fair Value Measurement and Disclosure topic of the Codification, the Company bases its fair values on the price that would be received to sell an asset or paid to transfer a liability in the principal market or most advantageous market for an asset or liability in an orderly transaction between market participants on the measurement date under current market conditions.  A fair value measurement reflects all of the assumptions that market participants would use in pricing the asset or liability, including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset, and the risk of nonperformance.

The Company groups its assets and liabilities measured at fair value into a three-level hierarchy, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. When the valuation assumptions used to measure the fair value of the asset or liability are categorized within different levels of the fair value hierarchy, the asset or liability is categorized in its entirety within the lowest level of the hierarchy. These levels are:

Level 1 – Valuation is based upon quoted prices for identical instruments traded in active exchange markets, such as the New York Stock Exchange.  Level 1 includes U.S. Treasury, equity securities and federal agency securities, which are traded by dealers or brokers in active markets.  Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.

Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 2 includes mortgage-backed securities, corporate securities, asset-backed securities, municipal bonds and residential collateralized mortgage obligations.

Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect the Company’s estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

The Company relies on independent vendor pricing services to measure fair value for investment securities available for sale and investment securities held to maturity. The Company employs three pricing services. To validate the pricing of these vendors, the Company routinely randomly selects securities for pricing by two or more of the vendors; significant pricing differences, if any, are evaluated using all available independent quotes with the lowest quote generally used as the fair value estimate. In addition, the Company conducts “other than temporary impairment (OTTI)” analysis on a quarterly basis; securities selected for OTTI analysis include all securities with fair value pricing of less than 95 percent of amortized cost. As with any valuation technique used to estimate fair value, changes in underlying assumptions used could significantly affect the results of current and future values. Accordingly, these fair values estimates may not be realized in an actual sale of the securities.

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When the Company changes its valuation assumptions for measuring financial assets and financial liabilities at fair value, either due to changes in current market conditions or other factors, it may need to transfer those assets or liabilities to another level in the hierarchy based on the new assumptions used. The Company recognizes these transfers at the end of the reporting period that the transfers occur. For the three months ended March 31, 2013 and March 31, 2012, there were no transfers in or out of levels 1, 2 or 3.

Assets Recorded at Fair Value on a Recurring Basis

The table below presents assets measured at fair value on a recurring basis.

	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other  Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
	(In thousands)
Investment securities available for sale:
At March 31, 2013	$	972,176	$	54,918	$	917,258	$	-
At December 31, 2012	$	825,636	$	57,424	$	768,212	$	-

Assets Recorded at Fair Value on a Nonrecurring Basis

The Company may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting of individual assets. For assets measured at fair value on a nonrecurring basis that were recorded in the balance sheet at March 31, 2013 and December 31, 2012, the following table provides the level of valuation assumptions used to determine each adjustment and the carrying value of the related assets at period end.

	At March 31, 2013
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	5,869	$	-	$	5,869	$	-	$	(446	)
Covered other real estate owned		8,055		-		8,055		-		(146	)
Originated impaired loans		3,618		-		2,628		990		(1,676	)
Purchased covered impaired loans		4,660		-		200		4,460		-
Total assets measured at fair value on a nonrecurring basis	$	22,202	$	-	$	16,752	$	5,450	$	(2,268	)

	At December 31, 2012
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	6,618	$	-	$	6,618	$	-	$	(1,360	)
Covered other real estate owned		7,929		-		7,929		-		(371	)
Originated impaired loans		5,197		-		3,097		2,100		(3,158	)
Purchased covered impaired loans		6,684		-		2,224		4,460		(83	)
Total assets measured at fair value on a nonrecurring basis	$	26,428	$	-	$	19,868	$	6,560	$	(4,972	)

Level 2 – Valuation is based upon independent market prices or appraised value of the collateral, less 10% for selling costs, generally.  Level 2 includes other real estate owned that has been measured at fair value subsequent to its initial classification as foreclosed assets and impaired loans collateralized by real property where a specific reserve has been established or a charge-off has been recorded.

Level 3 – Valuation is based upon estimated liquidation values of loan collateral.  The value of level 3 assets can also include a component of real estate, which is valued as described for level 2 inputs, when collateral for the impaired loan includes both business assets and real estate.  Level 3 includes impaired loans where a specific reserve has been established or a charge-off has been recorded.

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Disclosures about Fair Value of Financial Instruments

The following section describes the valuation methodologies used by the Company for estimating fair value of financial instruments not recorded at fair value in the balance sheet.

Cash and Due from Banks  Cash and due from banks represent U.S. dollar denominated coin and currency, deposits at the Federal Reserve Bank and correspondent banks, and amounts being settled with other banks to complete the processing of  customers’ daily transactions. Collectively, the Federal Reserve Bank and financial institutions operate a market in which cash and due from banks transactions are processed continuously in significant daily volumes honoring the face value of the U.S. dollar.

Investment Securities Held to Maturity  The fair values of investment securities were estimated using quoted prices as described above for Level 1 and Level 2 valuation.

Loans  Loans were separated into two groups for valuation. Variable rate loans, except for those described below, which reprice frequently with changes in market rates were valued using historical cost. Fixed rate loans and variable rate loans that have reached their minimum contractual interest rates were valued by discounting the future cash flows expected to be received from the loans using current interest rates charged on loans with similar characteristics. Additionally, the allowance for loan losses of $30,354 thousand at March 31, 2013 and $30,234 thousand at December 31, 2012 and the fair value discount due to credit default risk associated with purchased covered and purchased non-covered loans of $22,660 thousand and $4,587 thousand, respectively at March 31, 2013 and purchased covered and purchased non-covered loans of $26,128 thousand and $5,226 thousand, respectively at December 31, 2012 were applied against the estimated fair values to recognize estimated future defaults of contractual cash flows. The Company does not consider these values to be a liquidation price for the loans.

FDIC Receivable  The fair value of the FDIC receivable recorded in Other Assets was estimated by discounting estimated future cash flows using current market rates for financial instruments with similar characteristics.

Deposit Liabilities  Deposits with no stated maturity such as checking accounts, savings accounts and money market accounts can be readily converted to cash or used to settle transactions at face value through the broad financial system operated by the Federal Reserve Bank and financial institutions. The fair value of deposits with no stated maturity is equal to the amount payable on demand. The fair values of time deposits were estimated by discounting estimated future contractual cash flows using current market rates for financial instruments with similar characteristics.

Short-Term Borrowed Funds  The carrying amount of securities sold under agreement to repurchase and other short-term borrowed funds approximate fair value due to the relatively short period of time between their origination and their expected realization.

Federal Home Loan Bank Advances  The fair values of FHLB advances were estimated by using redemption amounts quoted by the Federal Home Loan Bank of San Francisco.

Term Repurchase Agreement  The fair value of the term repurchase agreement was estimated by using interpolated yields for financial instruments with similar characteristics.

Debt Financing  The fair value of debt financing was estimated by using interpolated yields for financial instruments with similar characteristics.

The table below is a summary of fair value estimates for financial instruments and the level of the fair value hierarchy within which the fair value measurements are categorized, excluding financial instruments recorded at fair value on a recurring basis. The values assigned do not necessarily represent amounts which ultimately may be realized. In addition, these values do not give effect to discounts to fair value which may occur when financial instruments are sold in larger quantities.  The carrying amounts in the following table are recorded in the balance sheet under the indicated captions.

The Company has not included assets and liabilities that are not financial instruments, such as goodwill, long-term relationships with deposit, merchant processing and trust customers, other purchased intangibles, premises and equipment, deferred taxes and other assets and liabilities. The total estimated fair values do not represent, and should not be construed to represent, the underlying value of the Company.

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	At March 31, 2013
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	355,459	$	355,459	$	355,459	$	-	$	-
Investment securities held to maturity		1,162,358		1,185,641		2,775		1,182,866		-
Loans		2,006,580		2,014,826		-		-		2,014,826
Other assets - FDIC receivable		12,162		12,155		-		-		12,155
Financial Liabilities:
Deposits	$	4,161,950	$	4,161,713	$	-	$	3,554,131	$	607,582
Short-term borrowed funds		61,854		61,854		-		61,854		-
Federal Home Loan Bank advances		25,743		26,014		26,014		-		-
Term repurchase agreement		10,000		10,114		-		10,114		-
Debt financing		15,000		15,365		-		15,365		-

	At December 31, 2012
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	491,382	$	491,382	$	491,382	$	-	$	-
Investment securities held to maturity		1,156,041		1,184,557		3,275		1,181,282		-
Loans		2,081,123		2,090,712		-		-		2,090,712
Other assets - FDIC receivable		13,847		13,834		-		-		13,834
Financial Liabilities:
Deposits	$	4,232,492	$	4,232,239	$	-	$	3,589,921	$	642,318
Short-term borrowed funds		53,687		53,687		-		53,687		-
Federal Home Loan Bank advances		25,799		26,150		26,150		-		-
Term repurchase agreement		10,000		10,135		-		10,135		-
Debt financing		15,000		15,645		-		15,645		-

The majority of the Company’s standby letters of credit and other commitments to extend credit carry current market interest rates if converted to loans. No premium or discount was ascribed to these commitments because virtually all funding would be at current market rates.

Note 10: Commitments and Contingent Liabilities

Loan commitments are agreements to lend to a customer provided there is no violation of any condition established in the agreement. Commitments generally have fixed expiration dates or other termination clauses. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements. Loan commitments are subject to the Company’s normal credit policies and collateral requirements. Unfunded loan commitments were $328,881 thousand and $339,651 thousand at March 31, 2013 and December 31, 2012, respectively. Standby letters of credit commit the Company to make payments on behalf of customers when certain specified future events occur. Standby letters of credit are primarily issued to support customers’ short-term financing requirements and must meet the Company’s normal credit policies and collateral requirements. Standby letters of credit outstanding totaled $31,783 thousand and $32,347 thousand at March 31, 2013 and December 31, 2012, respectively. The Company also had commitments for commercial and similar letters of credit of $344 thousand and $344 thousand at March 31, 2013 and December 31, 2012, respectively.

Due to the nature of its business, the Company is subject to various threatened or filed legal cases. Based on the advice of legal counsel, the Company does not expect such cases will have a material, adverse effect on its financial position or results of operations. Legal liabilities are accrued when obligations become probable and the amount is reasonably estimable. Legal costs related to covered assets are eighty percent indemnified under loss-sharing agreements with the FDIC if certain conditions are met.

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Note 11: Earnings Per Common Share

The table below shows earnings per common share and diluted earnings per common share. Basic earnings per common share are computed by dividing net income applicable to common equity by the average number of common shares outstanding during the period. Diluted earnings per common share are computed by dividing net income applicable to common equity by the average number of common shares outstanding during the period plus the impact of common stock equivalents.

	For the Three Months Ended March 31,
	2013		2012
	(In thousands, except per share data)
Net income applicable to common equity (numerator)	$	17,271	$	21,005
Basic earnings per common share
Weighted average number of common shares outstanding - basic (denominator)		27,145		28,051
Basic earnings per common share	$	0.64	$	0.75
Diluted earnings per common share
Weighted average number of common shares outstanding - basic		27,145		28,051
Add exercise of options reduced by the number of shares that could have been purchased with the proceeds of such exercise		12		60
Weighted average number of common shares outstanding - diluted (denominator)		27,157		28,111
Diluted earnings per common share	$	0.64	$	0.75

For the three months ended March 31, 2013 and 2012, options to purchase 2,317 thousand and 1,998 thousand shares of common stock, respectively, were outstanding but not included in the computation of diluted net income per share because the option exercise price exceeded the fair value of the stock such that their inclusion would have had an anti-dilutive effect.

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WESTAMERICA BANCORPORATION

FINANCIAL SUMMARY

	For the Three months ended
	March 31,			March 31,			December 31,
	2013			2012			2012
	(In thousands, except per share data)
Net Interest and Fee Income (FTE)1	$	43,835		$	51,699		$	46,283
Provision for Loan Losses		2,800			2,800			2,800
Noninterest Income		14,278			14,669			14,194
Noninterest Expense		28,677			30,034			28,233
Income Before Income Taxes (FTE)1		26,636			33,534			29,444
Income Tax Provision (FTE)1		9,365			12,529			10,308
Net Income	$	17,271		$	21,005		$	19,136
Average Common Shares Outstanding		27,145			28,051			27,313
Diluted Average Common Shares Outstanding		27,157			28,111			27,334
Common Shares Outstanding at Period End		27,018			27,917			27,213
Per Common Share:
Basic Earnings	$	0.64		$	0.75		$	0.70
Diluted Earnings		0.64			0.75			0.70
Book Value Per Common Share	$	20.69		$	20.04		$	20.58
Financial Ratios:
Return On Assets		1.43	%		1.68	%		1.55	%
Return On Common Equity		12.93	%		15.45	%		14.05	%
Net Interest Margin (FTE)1		4.27	%		5.12	%		4.49	%
Net Loan Losses to Average Loans:
Originated Loans		0.57	%		0.69	%		0.91	%
Purchased covered loans		0.39	%		0.28	%		0.14	%
Purchased non-covered loans		-	%		-	%		-2.31	%
Efficiency Ratio2		49.3	%		45.3	%		46.7	%
Average Balances:
Assets	$	4,908,483		$	5,030,935		$	4,920,620
Earning Assets		4,135,863			4,060,271			4,111,970
Originated Loans		1,641,401			1,835,370			1,682,579
Purchased Covered Loans		363,836			512,966			394,848
Purchased Non-covered Loans		72,752			119,503			77,632
Deposits		4,199,229			4,253,764			4,211,609
Shareholders' Equity		541,874			546,676			541,684
Period End Balances:
Assets	$	4,887,844		$	5,060,257		$	4,952,193
Earning Assets		4,171,468			4,100,675			4,093,034
Originated Loans		1,613,396			1,819,162			1,664,183
Purchased Covered Loans		353,034			491,103			372,283
Purchased Non-covered Loans		70,504			112,179			74,891
Deposits		4,161,950			4,249,004			4,232,492
Shareholders' Equity		558,980			559,528			560,102
Capital Ratios at Period End:
Total Risk Based Capital		15.99	%		16.09	%		16.33	%
Tangible Equity to Tangible Assets		8.75	%		8.36	%		8.64	%
Dividends Paid Per Common Share	$	0.37		$	0.37		$	0.37
Common Dividend Payout Ratio		58	%		49	%		53	%

The above financial summary has been derived from the Company's unaudited consolidated financial statements. This information should be read in conjunction with those statements, notes and the other information included elsewhere herein. Percentages under the heading "As Reported" are annualized with the exception of the efficiency ratio.

1 Yields on securities and certain loans have been adjusted upward to a "fully taxable equivalent" ("FTE") basis, which is a non-GAAP financial measure, in order to reflect the effect of income which is exempt from federal income taxation at the current statutory tax rate.

2 The efficiency ratio is defined as noninterest expense divided by total revenue (net interest income on an FTE basis, which is a non-GAAP financial measure, and noninterest income).

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The Federal Reserve’s Federal Open Market Committee has maintained highly accommodative monetary policies to influence interest rates to low levels in order to provide stimulus to the economy following the “financial crisis” recession. The Company’s principal source of revenue is net interest and fee income, which represents interest earned on loans and investment securities (“earning assets”) reduced by interest paid on deposits and other borrowings (“interest bearing liabilities”). The recent decline in market interest rates has reduced the spread between interest rates on earning assets and interest bearing liabilities. As a result, the Company’s net interest margin and net interest income have declined. The Company also earns revenue from service charges on deposit accounts, merchant processing services, debit card fees, and other fees (“noninterest income”). Service charges on deposit accounts are subject to laws and regulations; recent regulations and customer activity have caused service charges on deposit account to decline in 2012 and the three-months ended March 31, 2013; however, merchant processing fees, debit card fees and trust fees have increased due to higher transaction volumes and the Company’s sales efforts. The Company incurs noninterest expenses to deliver products and services to our customers. Management is focused on controlling noninterest expense levels, particularly due to the recent market interest rate pressure on net interest.

Westamerica Bancorporation and subsidiaries (the “Company”) reported first quarter 2013 net income of $17.3 million or $0.64 diluted earnings per common share. These results compare to net income applicable to common equity of $21.0 million or $0.75 diluted earnings per common share and $19.1 million or $0.70 diluted earnings per common share, respectively, for the first and fourth quarters of 2012.

Net Income

Following is a summary of the components of net income for the periods indicated:

	For the Three months ended
	March 31,						December 31,
	2013			2012			2012
	(In thousands, except per share data)
Net interest and fee income (FTE)	$	43,835		$	51,699		$	46,283
Provision for loan losses		(2,800	)		(2,800	)		(2,800	)
Noninterest income		14,278			14,669			14,194
Noninterest expense		(28,677	)		(30,034	)		(28,233	)
Income  before taxes (FTE)		26,636			33,534			29,444
Income tax provision (FTE)		(9,365	)		(12,529	)		(10,308	)
Net income	$	17,271		$	21,005		$	19,136
Average diluted common shares		27,157			28,111			27,334
Diluted earnings per common share	$	0.64		$	0.75		$	0.70
Average total assets	$	4,908,483		$	5,030,935		$	4,920,620
Net income to average total assets (annualized)		1.43	%		1.68	%		1.55	%
Net income to average common stockholders' equity (annualized)		12.93	%		15.45	%		14.05	%

Net income for the first quarter of 2013 was $3.7 million less than the same quarter of 2012, the net result of declines in net interest and fee income (fully taxable equivalent or “FTE”) and noninterest income, partially offset by decreases in noninterest expense and income tax provision (FTE). A decrease in net interest and fee income (FTE) was mostly attributed to lower average balances of loans and lower yields on interest-earning assets, partially offset by higher average balances of investments, lower average balances of interest-bearing deposits and lower rates paid on interest-bearing deposits. The provision for loan losses remained the same, reflecting Management's evaluation of losses inherent in the loan portfolio not covered by loss-sharing agreements with the Federal Deposit Insurance Corporation (“FDIC”) and purchased loan credit-default discounts. Noninterest expense decreased $1.4 million primarily due to reduced personnel costs, loan administration expenses, intangible amortization and professional fees.

Comparing the first quarter of 2013 to the fourth quarter of 2012, net income decreased $1.9 million primarily due to lower net interest and fee income (FTE) and higher noninterest expense, partially offset by a decrease in income tax provision (FTE). The lower net interest and fee income (FTE) was primarily caused by a lower average volume of loans and lower yields on interest earning assets, partially offset by higher average balances of investments and lower average balances of time  deposits and lower rates paid on those deposits. The provision for loan losses remained the same, reflecting Management's evaluation of losses inherent in the loan portfolio not covered by loss-sharing agreements with the FDIC and purchased loan credit-default discounts. Noninterest expense increased $444 thousand.

- 28 -

Net Interest and Fee Income (FTE)

Following is a summary of the components of net interest and fee income (FTE) for the periods indicated:

	For the Three Months Ended
	March 31,						December 31,
	2013			2012			2012
	(In thousands)
Interest and fee income	$	40,465		$	48,298		$	42,893
Interest expense		(1,252	)		(1,559	)		(1,331	)
FTE adjustment		4,622			4,960			4,721
Net interest and fee income (FTE)	$	43,835		$	51,699		$	46,283
Average earning assets	$	4,135,863		$	4,060,271		$	4,111,970
Net interest margin (FTE) (annualized)		4.27	%		5.12	%		4.49	%

Net interest and fee income (FTE) decreased during the first quarter of 2013 by $7.9 million from the same period in 2012 to $43.8 million, mainly due to lower average balances of loans (down $390 million) and lower yields on interest-earning assets (down 0.88%), partially offset by higher average balances of investments (up $465 million), lower average balances of interest-bearing deposits (down $122 million) and lower rates paid on interest-bearing deposits (down 0.04%).

Comparing the first quarter of 2013 with the fourth quarter of 2012, net interest and fee income (FTE) decreased $2.4 million primarily due to a lower average volume of loans (down $77 million) and lower yields on interest earning assets (down 0.23%), partially offset by higher average balances of investments (up $101 million) and lower average balances of time deposits (down $18 million) and lower rates paid on those deposits.

Loan volumes have declined due to problem loan workout activities, particularly with purchased loans, and reduced volumes of loan originations. In Management’s opinion, current levels of competitive loan pricing do not provide adequate forward earnings potential. As a result, the Company has not currently taken an aggressive posture relative to loan portfolio growth. Management has maintained relatively stable interest-earning asset volumes by increasing investment securities as loan volumes have declined.

Yields on interest-earning assets have declined due to relatively low interest rates prevailing in the market. Economic conditions, competitive pricing and deleveraging by businesses and individuals have reduced loan volumes, placing greater reliance on lower-yielding investment securities. Rates on interest-bearing deposits and borrowings have declined to offset some of the decline in asset yields.

At March 31, 2013, purchased FDIC covered loans represented 17 percent of the Company’s loan portfolio. Under the terms of the FDIC loss-sharing agreements, the FDIC is obligated to reimburse the Bank 80 percent of loan interest income foregone on covered loans. Such reimbursements are limited to the lesser of 90 days contractual interest or actual unpaid contractual interest at the time a principal loss is recognized in respect to the underlying loan. FDIC loss indemnification of covered non-residential assets expires February 6, 2014. For further information, see the Loan Portfolio Credit Risk section of this report.

Interest and Fee Income (FTE)

Interest and fee income (FTE) for the first quarter of 2013 decreased $8.2 million or 15.3% from the same period in 2012. The decrease was caused by lower average balances of loans and lower yields on interest-earning assets, partially offset by higher average balances of investments.

The total average balances of loans declined due to decreases in the average balances of commercial real estate loans (down $186 million), taxable commercial loans (down $78 million), consumer loans (down $34 million), real estate residential loans (down $51 million), tax-exempt commercial loans (down $24 million) and construction loans (down $17 million). The average investment portfolio increased largely due to higher average balances of collateralized mortgage obligations and mortgage backed securities (up $309 million), corporate securities (up $188 million) and municipal securities (up $29 million), partially offset by a $63 million decrease in average balances of securities of U.S. government sponsored entities. The average yield on the Company's earning assets decreased from 5.27% in the first quarter of 2012 to 4.39% in the corresponding period of 2013. The composite yield on loans declined 0.47% to 5.46% mostly due to lower yields on consumer loans (down 0.84%), commercial real estate loans (down 0.40%) and taxable commercial loans (down 0.29%). Nonperforming loans are included in average loan volumes used to compute loan yields; fluctuations in nonaccrual loan volumes impact loan yields. The investment yields in general declined due to market rates. The investment portfolio yield decreased 0.92% to 3.32% primarily due to lower yields on collateralized mortgage obligations and mortgage backed securities (down 1.10%), municipal securities (down 0.46%) and corporate securities (down 0.27%).

- 29 -

Comparing the first quarter of 2013 with the fourth quarter of 2012, interest and fee income (FTE) was down $2.5 million. The decrease resulted from a lower average volume of loans and lower yields on interest earning assets, partially offset by higher average balances of investments. Average interest earning assets increased $24 million or 0.6% in the first quarter of 2013 compared with the fourth quarter of 2012 due to a $101 million increase in average investments and a $77 million decrease in average loans. The decrease in the average balance of the loan portfolio was attributable to decreases in average balances of commercial real estate loans (down $35 million), taxable commercial loans (down $13 million), consumer loans (down $10 million), tax-exempt commercial loans (down $5 million) and residential real estate loans (down $12 million).

The average investment portfolio increased mostly due to higher average balances of corporate securities (up $66 million), collateralized mortgage obligations and mortgage backed securities (up $38 million) and municipal securities (up $19 million), partially offset by a $21 million decrease in average balances of securities of U.S. government sponsored entities.

The average yield on earning assets for the first quarter of 2013 was 4.39% compared with 4.62% in the fourth quarter of 2012. The loan portfolio yield for the first quarter of 2013 compared with the fourth quarter of 2012 was lower by 0.13% mostly due to lower yields on construction loans (down 9.56%), consumer loans (down 0.21%) and commercial real estate loans (down 0.05%). The yield on construction loans in the fourth quarter 2012 was elevated due to interest received on nonaccrual loans. The investment portfolio yield decreased 0.22% to 3.32% primarily due to lower yields on collateralized mortgage obligations and mortgage backed securities (down 0.21%), corporate securities (down 0.21%), municipal securities (down 0.17%) and securities of U.S. government sponsored entities (down 0.15%).

Interest Expense

Interest expense has been reduced by lowering rates paid on interest-bearing deposits and borrowings and by reducing the volume of higher-cost funding sources. Lower-cost checking and savings deposits accounted for 85.0% of total average deposits in the first quarter 2013 compared with 81.4% in the first quarter 2012. Interest expense in the first quarter of 2013 decreased $307 thousand or 19.7% compared with the same period in 2012 due to lower rates paid on interest-bearing deposits and a shift of higher costing deposits and financing to lower cost checking and savings accounts. Interest-bearing liabilities declined due to lower average balances of time deposits $100 thousand or more (down $122 million), time deposits less than $100 thousand (down $41 million), preferred money market savings (down $29 million) and customer sweep accounts (down $57 million), partially offset by higher average balances of regular savings (up $32 million) and money market savings (up $22 million). The average rate paid on interest-bearing liabilities decreased from 0.22% in the first quarter of 2012 to 0.19% in the first quarter of 2013. Rates on interest-bearing deposits decreased 0.04% to 0.14% primarily due to decreases in rates paid on time deposits less than $100 thousand (down 0.12%) and short-term borrowings (down 0.02%).

Comparing the first quarter of 2013 with the fourth quarter of 2012, interest expense declined $79 thousand due to lower average balances of interest-bearing deposits and lower rates paid on interest-bearing deposits. Lower-cost checking and savings deposits accounted for 85.0% of total average deposits in the first quarter 2013 compared with 84.6% in the fourth quarter 2012. Average interest-bearing deposits during the first quarter of 2013 fell $1 million compared with the fourth quarter 2012 primarily due to declines in the average balances of time deposits $100 thousand or more (down $10 million) and time deposits less than $100 thousand (down $8 million), partially offset by increases in the average balances of money market savings (up $7 million), regular savings (up $7 million) and money market checking accounts (up $5 million). Rates paid on interest-bearing deposits averaged 0.14% during the first quarter of 2013 compared with 0.15% for the fourth quarter of 2012.

- 30 -

Net Interest Margin (FTE)

The following summarizes the components of the Company's net interest margin for the periods indicated:

	For the Three Months Ended
	March 31,						December 31,
	2013			2012			2012
Yield on earning assets (FTE)		4.39	%		5.27	%		4.62	%
Rate paid on interest-bearing liabilities		0.19	%		0.22	%		0.20	%
Net interest spread (FTE)		4.20	%		5.05	%		4.42	%
Impact of noninterest-bearing funds		0.07	%		0.07	%		0.07	%
Net interest margin (FTE)		4.27	%		5.12	%		4.49	%

During the first quarter of 2013, the net interest margin (FTE) decreased 0.85% compared with the same period in 2012. Lower yields on earning assets were partially offset by lower rates paid on interest-bearing liabilities and resulted in a 0.85% decrease in net interest spread (FTE). The 0.07% net interest margin contribution of noninterest-bearing demand deposits resulted in the net interest margin (FTE) of 4.27%. During the first quarter of 2013, the net interest margin (FTE) decreased 0.22% compared with the fourth quarter of 2012. The net interest spread (FTE) in the first quarter of 2013 was 4.20% compared with 4.42% in the fourth quarter of 2012, the net result of a 0.22% decrease in earning asset yields, partially offset by lower cost of interest-bearing liabilities (down 0.01%).

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Summary of Average Balances, Yields/Rates and Interest Differential

The following tables present, for the periods indicated, information regarding the consolidated average assets, liabilities and shareholders’ equity, the amounts of interest income earned from average interest earning assets and the resulting yields, and the amounts of interest expense incurred on average interest-bearing liabilities and the resulting rates. Average loan balances include nonperforming loans. Interest income includes proceeds from loans on nonaccrual status only to the extent cash payments have been received and applied as interest income and accretion of purchased loan discounts. Yields on tax-exempt securities and loans have been adjusted upward to reflect the effect of income exempt from federal income taxation at the current statutory tax rate (FTE).

Distribution of Assets, Liabilities & Shareholders’ Equity and Yields, Rates & Interest Margin

	For the Three Months Ended March 31, 2013
	Average Balance		Interest Income/ Expense		Yields/ Rates
	(In thousands)
Assets
Investment securities:
Available for sale
Taxable	$	710,506	$	3,443		1.94	%
Tax-exempt (1)		192,127		2,786		5.80	%
Held to maturity
Taxable		472,994		2,092		1.77	%
Tax-exempt (1)		682,247		8,777		5.15	%
Loans:
Commercial:
Taxable		274,498		4,277		6.32	%
Tax-exempt (1)		114,117		1,692		6.01	%
Commercial real estate		904,841		14,128		6.33	%
Real estate construction		16,277		285		7.10	%
Real estate residential		231,969		2,060		3.55	%
Consumer		536,287		5,547		4.19	%
Total loans (1)		2,077,989		27,989		5.46	%
Total Interest-earning assets (1)		4,135,863	$	45,087		4.39	%
Other assets		772,620
Total assets	$	4,908,483
Liabilities and shareholders' equity
Deposits:
Noninterest-bearing demand	$	1,643,348	$	-		-	%
Savings and interest-bearing transaction		1,925,264		296		0.06	%
Time less than $100,000		240,099		299		0.51	%
Time $100,000 or more		390,518		304		0.32	%
Total interest-bearing deposits		2,555,881		899		0.14	%
Short-term borrowed funds		57,733		11		0.08	%
Term repurchase agreement		10,000		24		0.96	%
Federal Home Loan Bank advances		25,777		118		1.86	%
Debt financing		15,000		200		5.35	%
Total interest-bearing liabilities		2,664,391	$	1,252		0.19	%
Other liabilities		58,870
Shareholders' equity		541,874
Total liabilities and shareholders' equity	$	4,908,483
Net interest spread (1) (2)						4.20	%
Net interest and fee income and interest margin (1) (3)			$	43,835		4.27	%

(1) Amounts calculated on a fully taxable equivalent basis using the current statutory federal tax rate.

(2) Net interest spread represents the average yield earned on interest-earning assets less the average rate incurred on interest-bearing liabilities.

(3) Net interest margin is computed by calculating the difference between interest income and expense (annualized), divided by the average balance of interest-earning assets.

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Distribution of Assets, Liabilities & Shareholders’ Equity and Yields, Rates & Interest Margin

	For the Three Months Ended March 31, 2012
	Average Balance		Interest Income/ Expense		Yields/ Rates
	(In thousands)
Assets
Investment securities:
Available for sale
Taxable	$	412,353	$	2,564		2.49	%
Tax-exempt (1)		224,879		3,359		5.97	%
Held to maturity
Taxable		341,107		2,126		2.49	%
Tax-exempt (1)		614,093		8,837		5.76	%
Loans:
Commercial:
Taxable		352,075		5,783		6.61	%
Tax-exempt (1)		137,747		2,055		6.00	%
Commercial real estate		1,091,025		18,249		6.73	%
Real estate construction		33,267		551		6.66	%
Real estate residential		283,137		2,603		3.68	%
Consumer		570,588		7,131		5.03	%
Total loans (1)		2,467,839		36,372		5.93	%
Total Interest-earning assets (1)		4,060,271	$	53,258		5.27	%
Other assets		970,664
Total assets	$	5,030,935
Liabilities and shareholders' equity
Deposits:
Noninterest-bearing demand	$	1,576,058	$	-		-	%
Savings and interest-bearing transaction		1,884,544		326		0.07	%
Time less than $100,000		280,735		438		0.63	%
Time $100,000 or more		512,427		423		0.33	%
Total interest-bearing deposits		2,677,706		1,187		0.18	%
Short-term borrowed funds		114,906		27		0.10	%
Term repurchase agreement		10,000		25		0.97	%
Federal Home Loan Bank advances		26,000		120		1.85	%
Debt financing		15,000		200		5.35	%
Total interest-bearing liabilities		2,843,612	$	1,559		0.22	%
Other liabilities		64,589
Shareholders' equity		546,676
Total liabilities and shareholders' equity	$	5,030,935
Net interest spread (1) (2)						5.05	%
Net interest and fee income and interest margin (1) (3)			$	51,699		5.12	%

(1) Amounts calculated on a fully taxable equivalent basis using the current statutory federal tax rate.

(2) Net interest spread represents the average yield earned on interest-earning assets less the average rate incurred on interest-bearing liabilities.

(3) Net interest margin is computed by calculating the difference between interest income and expense (annualized), divided by the average balance of interest-earning assets.

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Distribution of Assets, Liabilities & Shareholders’ Equity and Yields, Rates & Interest Margin

	For the Three Months Ended December 31, 2012
	Average Balance		Interest Income/ Expense		Yields/ Rates
	(In thousands)
Assets
Investment securities:
Available for sale
Taxable	$	595,666	$	3,198		2.15	%
Tax-exempt (1)		201,332		2,940		5.84	%
Held to maturity
Taxable		507,217		2,406		1.90	%
Tax-exempt (1)		652,696		8,803		5.39	%
Loans:
Commercial:
Taxable		287,415		4,426		6.13	%
Tax-exempt (1)		119,495		1,798		5.99	%
Commercial real estate		939,943		15,067		6.38	%
Real estate construction		18,125		759		16.66	%
Real estate residential		244,177		2,176		3.56	%
Consumer		545,904		6,041		4.40	%
Total loans (1)		2,155,059		30,267		5.59	%
Total Interest-earning assets (1)		4,111,970	$	47,614		4.62	%
Other assets		808,650
Total assets	$	4,920,620
Liabilities and shareholders' equity
Deposits:
Noninterest-bearing demand	$	1,654,575	$	-		-	%
Savings and interest-bearing transaction		1,908,286		304		0.06	%
Time less than $100,000		248,192		332		0.53	%
Time $100,000 or more		400,556		334		0.33	%
Total interest-bearing deposits		2,557,034		970		0.15	%
Short-term borrowed funds		55,523		14		0.10	%
Term repurchase agreement		10,000		25		0.97	%
Federal Home Loan Bank advances		25,832		122		1.87	%
Debt financing		15,000		200		5.35	%
Total interest-bearing liabilities		2,663,389	$	1,331		0.20	%
Other liabilities		60,972
Shareholders' equity		541,684
Total liabilities and shareholders' equity	$	4,920,620
Net interest spread (1) (2)						4.42	%
Net interest and fee income and interest margin (1) (3)			$	46,283		4.49	%

(1) Amounts calculated on a fully taxable equivalent basis using the current statutory federal tax rate.

(2) Net interest spread represents the average yield earned on interest-earning assets less the average rate incurred on interest-bearing liabilities.

(3) Net interest margin is computed by calculating the difference between interest income and expense (annualized), divided by the average balance of interest-earning assets.

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Summary of Changes in Interest Income and Expense due to Changes in Average Asset & Liability Balances and Yields Earned & Rates Paid

The following tables set forth a summary of the changes in interest income and interest expense due to changes in average assets and liability balances (volume) and changes in average interest yields/rates for the periods indicated. Changes not solely attributable to volume or yields/rates have been allocated in proportion to the respective volume and yield/rate components.

Summary of Changes in Interest Income and Expense

	For the Three Months Ended March 31, 2013 Compared with For the Three months ended March 31, 2012
	Volume			Yield/Rate			Total
	(In thousands)
Increase (decrease) in interest and fee income:
Investment securities:
Available for sale
Taxable	$	1,522		$	(643	)	$	879
Tax-exempt (1)		(483	)		(90	)		(573	)
Held to maturity
Taxable		667			(701	)		(34	)
Tax-exempt (1)		871			(931	)		(60	)
Loans:
Commercial:
Taxable		(1,267	)		(239	)		(1,506	)
Tax-exempt (1)		(367	)		4			(363	)
Commercial real estate		(3,110	)		(1,011	)		(4,121	)
Real estate construction		(300	)		34			(266	)
Real estate residential		(461	)		(82	)		(543	)
Consumer		(468	)		(1,116	)		(1,584	)
Total loans (1)		(5,973	)		(2,410	)		(8,383	)
Total decrease in interest and fee income (1)		(3,396	)		(4,775	)		(8,171	)
Increase (decrease) in interest expense:
Deposits:
Savings and interest-bearing transaction		4			(34	)		(30	)
Time less than $100,000		(61	)		(78	)		(139	)
Time $100,000 or more		(99	)		(20	)		(119	)
Total interest-bearing deposits		(156	)		(132	)		(288	)
Short-term borrowed funds		(11	)		(5	)		(16	)
Term repurchase agreement		(1	)		-			(1	)
Federal Home Loan Bank advances		(2	)		-			(2	)
Debt financing		-			-			-
Total decrease in interest expense		(170	)		(137	)		(307	)
Decrease in net interest and fee income (1)	$	(3,226	)	$	(4,638	)	$	(7,864	)

(1) Amounts calculated on a fully taxable equivalent basis using the current statutory federal tax rate.

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Summary of Changes in Interest Income and Expense

	For the Three Months Ended March 31, 2013 Compared with For the Three months ended December 31, 2012
	Volume			Yield/Rate			Total
	(In thousands)
Increase (decrease) in interest and fee income:
Investment securities:
Available for sale
Taxable	$	550		$	(305	)	$	245
Tax-exempt (1)		(140	)		(14	)		(154	)
Held to maturity
Taxable		(178	)		(136	)		(314	)
Tax-exempt (1)		308			(334	)		(26	)
Loans:
Commercial:
Taxable		(288	)		139			(149	)
Tax-exempt (1)		(114	)		8			(106	)
Commercial real estate		(840	)		(99	)		(939	)
Real estate construction		(78	)		(396	)		(474	)
Real estate residential		(111	)		(5	)		(116	)
Consumer		(223	)		(271	)		(494	)
Total loans (1)		(1,654	)		(624	)		(2,278	)
Total decrease in interest and fee income (1)		(1,114	)		(1,413	)		(2,527	)
Decrease in interest expense:
Deposits:
Savings and interest-bearing transaction		(3	)		(5	)		(8	)
Time less than $100,000		(17	)		(16	)		(33	)
Time $100,000 or more		(15	)		(15	)		(30	)
Total interest-bearing deposits		(35	)		(36	)		(71	)
Short-term borrowed funds		-			(3	)		(3	)
Term repurchase agreement		(1	)		-			(1	)
Federal Home Loan Bank advances		(3	)		(1	)		(4	)
Debt financing		-			-			-
Total decrease in interest expense		(39	)		(40	)		(79	)
Decrease in net interest and fee income (1)	$	(1,075	)	$	(1,373	)	$	(2,448	)

(1) Amounts calculated on a fully taxable equivalent basis using the current statutory federal tax rate.

Provision for Loan Losses

The Company manages credit costs by consistently enforcing conservative underwriting and administration procedures and aggressively pursuing collection efforts with debtors experiencing financial difficulties. The provision for loan losses reflects Management's assessment of credit risk in the loan portfolio during each of the periods presented.

The Company provided $2.8 million each for loan losses in the first quarter of 2013, the first quarter of 2012 and the fourth quarter of 2012. The Company recorded purchased County Bank and Sonoma Valley Bank loans at estimated fair value upon the acquisition dates, February 6, 2009 and August 20, 2010, respectively. Such estimated fair values were recognized for individual loans, although small balance homogenous loans were pooled for valuation purposes. The valuation discounts recorded for purchased loans included Management’s assessment of the risk of principal loss under economic and borrower conditions prevailing on the dates of purchase. The purchased County Bank loans are “covered” by loss-sharing agreements the Company entered with the FDIC which mitigates losses during the term of the agreements. Any deterioration in estimated value related to principal loss subsequent to the acquisition dates requires additional loss recognition through a provision for loan losses. No assurance can be given future provisions for loan losses related to purchased loans will not be necessary. For further information regarding credit risk, the FDIC loss-sharing agreements, net credit losses and the allowance for loan losses, see the “Loan Portfolio Credit Risk” and “Allowance for Credit Losses” sections of this report.

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Noninterest Income

The following table summarizes the components of noninterest income for the periods indicated.

	For the Three Months Ended
	March 31,				December 31,
	2013		2012		2012
	(In thousands)
Service charges on deposit accounts	$	6,542	$	7,095	$	6,722
Merchant processing services		2,409		2,393		2,401
Debit card fees		1,358		1,163		1,357
Other service fees		762		696		679
ATM processing fees		705		933		749
Trust fees		568		489		552
Safe deposit rental		195		197		175
Check sale income		183		211		203
Financial services commissions		180		171		148
Other noninterest income		1,376		1,321		1,208
Total	$	14,278	$	14,669	$	14,194

Noninterest income for the first quarter of 2013 declined by $391 thousand from the same period in 2012. Service charges on deposits decreased $553 thousand or 7.8% due to declines in fees charged on overdrawn and insufficient funds accounts (down $272 thousand) and lower deficit fees charged on analyzed accounts (down $211 thousand). ATM processing fees decreased $228 thousand mainly because the Bank customers had fewer transactions at non-Westamerica ATMs and other cash dispenser terminals. Debit card fees increased $195 thousand or 16.8% primarily due to increased transactions.

In the first quarter of 2013, noninterest income increased $84 thousand compared with the fourth quarter of 2012. Service charges on deposits decreased $180 thousand or 2.7% due to declines in fees charged on overdrawn and insufficient funds accounts (down $209 thousand) and lower deficit fees charged on analyzed accounts (down $48 thousand), partially offset by fee increases on savings accounts (up $77 thousand).

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Noninterest Expense

The following table summarizes the components of noninterest expense for the periods indicated.

	For the Three Months Ended
	March 31,				December 31,
	2013		2012		2012
	(In thousands)
Salaries and related benefits	$	14,403	$	15,046	$	13,555
Occupancy		3,886		3,934		3,851
Outsourced data processing services		2,157		2,083		2,213
Amortization of identifiable intangibles		1,219		1,402		1,292
Equipment		880		851		892
Courier service		741		785		768
Professional fees		635		767		761
Telephone		448		376		511
Loan expense		417		627		467
Other real estate owned		334		230		322
Postage		300		372		301
Stationery and supplies		281		243		275
Advertising/public relations		145		151		223
Operational losses		128		173		113
Other noninterest expense		2,703		2,994		2,689
Total	$	28,677	$	30,034	$	28,233

Noninterest expense decreased $1.4 million or 4.5% in the first quarter 2013 compared with the same period in 2012 primarily due to lower personnel costs, loan administration expenses, intangible amortization and professional fees. Salaries and related benefits declined $643 thousand or 4.3% due to lower incentives and employee attrition. Loan expense decreased $210 thousand due to lower fees waived on charged off loans and lower appraisal fees. Amortization of identifiable intangibles decreased $183 thousand as assets are amortized on a declining balance method. Professional fees decreased $132 thousand due to lower legal fees relating to nonperforming assets.

In the first quarter of 2013, noninterest expense increased $444 thousand compared with the fourth quarter of 2012. Salaries and related benefits increased $848 thousand primarily due to higher payroll taxes and other employee benefits. Professional fees declined $126 thousand due to lower legal fees associated with nonperforming assets.

Provision for Income Tax

During the first quarter of 2013, the Company recorded income tax provision (FTE) of $9.4 million, compared with $12.5 million and $10.3 million for the first and fourth quarters of 2012, respectively. The current quarter provision represents an effective tax rate (FTE) of 35.2%, compared with 37.4% and 35.0% for the first and fourth quarters of 2012, respectively. The decline in the effective tax rate from the first quarter 2012 to both the fourth quarter 2012 and first quarter 2013 is attributable to tax-exempt income elements representing a greater proportion of pre-tax book income. The Company earns interest on municipal loans and investment securities which are federally tax-exempt and recognizes life insurance policy benefits which are exempt from federal and state taxes; on a combined basis, these tax-exempt items equaled 34%, 38% and 42% of pre-tax book income for the first quarter 2012, fourth quarter 2012, and first quarter 2013, respectively.

Loan Portfolio Credit Risk

The risk that loan customers do not repay loans extended by the Bank is a significant risk to the Company. The Company closely monitors the markets in which it conducts its lending operations and follows a strategy to control exposure to loans with high credit risk. The Bank’s organization structure separates the functions of business development and loan underwriting; Management believes this segregation of duties avoids inherent conflicts of combining business development and loan approval functions. In measuring and managing credit risk, the Company adheres to the following practices.

·   The Bank maintains a Loan Review Department which reports directly to the Board of Directors. The Loan Review Department performs independent evaluations of loans and assigns credit risk grades to evaluated loans using grading standards employed by bank regulatory agencies. Those loans judged to carry higher risk attributes are referred to as “classified loans.” Classified loans receive elevated management attention to maximize collection.

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·   The Bank maintains two loan administration offices whose sole responsibility is to manage and collect classified loans.

Classified loans with higher levels of credit risk are further designated as “nonaccrual loans.” Management places classified loans on nonaccrual status when full collection of contractual interest and principal payments is in doubt. Uncollected interest previously accrued on loans placed on nonaccrual status is charged against interest income, net of estimated FDIC reimbursements under loss-sharing agreements. The Company does not accrue interest income on loans following placement on nonaccrual status. Interest payments received on nonaccrual loans are applied to reduce the carrying amount of the loan unless the carrying amount is well secured by loan collateral or covered by FDIC loss-sharing agreements. “Nonperforming assets” include nonaccrual loans, loans 90 or more days past due and still accruing, and repossessed loan collateral (commonly referred to as “Other Real Estate Owned”).

Nonperforming Assets
	At March 31,				At December 31,
	2013		2012		2012
	(In thousands)
Originated:
Nonperforming nonaccrual loans	$	7,005	$	9,976	$	10,016
Performing nonaccrual loans		1,154		6,374		1,759
Total nonaccrual loans		8,159		16,350		11,775
Accruing loans 90 or more days past due		305		359		455
Total nonperforming loans		8,464		16,709		12,230
Other real estate owned		7,691		13,624		9,295
Total nonperforming assets	$	16,155	$	30,333	$	21,525
Purchased covered:
Nonperforming nonaccrual loans	$	9,578	$	4,510	$	11,698
Performing nonaccrual loans		2,299		2,165		1,323
Total nonaccrual loans		11,877		6,675		13,021
Accruing loans 90 or more days past due		88		520		155
Total nonperforming loans		11,965		7,195		13,176
Other real estate owned		13,713		15,810		13,691
Total nonperforming assets	$	25,678	$	23,005	$	26,867
Purchased non-covered:
Nonperforming nonaccrual loans	$	6,052	$	13,948	$	7,038
Performing nonaccrual loans		3,060		7,056		461
Total nonaccrual loans		9,112		21,004		7,499
Accruing loans 90 or more days past due		-		-		4
Total nonperforming loans		9,112		21,004		7,503
Other real estate owned		1,980		6,543		3,366
Total nonperforming assets	$	11,092	$	27,547	$	10,869

The Bank’s commercial loan customers are primarily small businesses and professionals. As a result, average loan balances are relatively small, providing risk diversification within the overall loan portfolio. At March 31, 2013, the Bank’s nonaccrual loans reflected this diversification: nonaccrual originated loans with a carrying value totaling $8 million comprised twenty borrowers, nonaccrual purchased covered loans with a carrying value totaling $12 million comprised fifteen borrowers, and nonaccrual purchased non-covered loans with a carrying value totaling $9 million comprised fourteen borrowers.

Management believes the overall credit quality of the loan portfolio is reasonably stable; however, classified and nonperforming assets could fluctuate from period to period. The performance of any individual loan can be affected by external factors such as the interest rate environment, economic conditions, and collateral values or factors particular to the borrower. No assurance can be given that additional increases in nonaccrual and delinquent loans will not occur in the future.

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The former County Bank loans and repossessed loan collateral were purchased from the FDIC with indemnifying loss-sharing agreements. The loss-sharing agreements significantly reduce the credit risk of these purchased assets during the term of the agreements. Under the terms of the loss-sharing agreements, the FDIC absorbs 80 percent of losses and shares in 80 percent of loss recoveries on the first $269 million in losses on purchased covered assets (“First Tier”), and absorbs 95 percent of losses and shares in 95 percent of loss recoveries if losses on purchased covered assets exceed $269 million (“Second Tier”). The loss-sharing agreement on covered residential real estate assets expires February 6, 2019 and the loss-sharing agreement on covered non-residential assets expires February 6, 2014 as to losses and February 6, 2017 as to loss recoveries.

The purchased covered assets are primarily located in the California Central Valley, including Merced County. This geographic area currently has some of the weakest economic conditions within California and has experienced significant declines in real estate values. Management expects higher loss rates on purchased covered assets than on originated assets.

The Bank recorded purchased covered assets at estimated fair value on the February 6, 2009 acquisition date. The credit risk discount ascribed to the $1.3 billion acquired loan and repossessed loan collateral portfolio was $161 million representing estimated losses inherent in the assets at the acquisition date.

Purchased Covered Assets
	At March 31,						At December 31,			February 6,
	2013			2012			2012			2009
	(In thousands)
Non-residential assets	$	363,940		$	511,536		$	384,285		$	1,298,526
Residential assets		23,534			30,909			25,570			40,955
Total indemnified assets		387,474			542,445			409,855			1,339,481
Credit risk discount		(22,660	)		(37,503	)		(26,128	)		(161,203	)
Other adjustments		1,933			1,971			2,247			5,407
Carrying value of covered assets	$	366,747		$	506,913		$	385,974		$	1,183,685
Comprised of:
Purchased covered loans	$	353,034		$	491,103		$	372,283		$	1,174,353
Covered other real estate owned		13,713			15,810			13,691			9,332
Carrying value of covered assets	$	366,747		$	506,913		$	385,974		$	1,183,685

Aggregate indemnified losses from February 6, 2009 through March 31, 2013 have been $135 million, which includes principal losses, loss in value of other real estate owned, loss on sale of other real estate owned, and reimbursement of incurred collection and asset management expenses such as legal fees, property taxes, appraisals and other customary expenses. Purchased covered asset principal losses have been primarily offset against the estimated credit risk discount, although some losses exceeding the purchase date estimated credit risk discount have been provided for and charged-off against the allowance for credit losses.

Purchased covered assets are evaluated for risk classification without regard to FDIC indemnification such that Management can identify purchased covered assets with potential payment problems and devote appropriate credit administration practices to maximize collections. Classified purchased covered assets without regard to FDIC indemnification totaled $123 million, $139 million and $122 million at March 31, 2013, March 31, 2012 and December 31, 2012, respectively.

As noted above, FDIC loss indemnification of covered non-residential assets expires February 6, 2014; loss exposure on such assets after February 6, 2014 will be represented by such assets’ carrying values at such time. Loss exposure for loans is mitigated by the borrowers’ financial condition and ability to repay their loans, loan collateral values, the amount of credit risk discount remaining at such time, any existing borrower guarantees which are perfected and have economic value, and the allowance for credit losses. Loss exposure for other real estate owned is mitigated by the value of the repossessed loan collateral, less disposition costs.

Allowance for Credit Losses

The Company’s allowance for credit losses represents Management’s estimate of credit losses inherent in the loan portfolio. In evaluating credit risk for loans, Management measures loss potential of the carrying value of loans. As described above, payments received on nonaccrual loans may be applied against the principal balance of the loans until such time as full collection of the remaining recorded balance is expected. Further,the carrying value of purchased loans includes fair value discounts assigned at the time of purchase under the provisions of FASB ASC 805, Business Combinations, and FASB ASC 310-30, Loans or Debt Securities Acquired with Deteriorated Credit Quality. The allowance for credit losses represents Management’s estimate of credit losses in excess of these reductions to the carrying value of loans within the loan portfolio.

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The following table summarizes the allowance for credit losses, chargeoffs and recoveries of the Company for the periods indicated:

	For the Three Months Ended
	March 31,						December 31,
	2013			2012			2012
	(In thousands)
Analysis of the Allowance for Credit Losses
Balance, beginning of period	$	32,927		$	35,290		$	33,659
Provision for loan losses		2,800			2,800			2,800
Provision for unfunded commitments		-			-			-
Loans charged off
Commercial		(1,902	)		(862	)		(3,228	)
Commercial real estate		(113	)		(948	)		(86	)
Real estate construction		-			-			(126	)
Real estate residential		(87	)		(870	)		-
Consumer		(1,308	)		(1,653	)		(1,382	)
Purchased covered loans		(359	)		(365	)		(230	)
Purchased non-covered loans		-			-			450
Total chargeoffs		(3,769	)		(4,698	)		(4,602	)
Recoveries of loans previously charged off
Commercial		462			389			200
Commercial real estate		21			-			25
Real estate construction		-			2			-
Consumer		601			779			755
Purchased covered loans		5			14			90
Total recoveries		1,089			1,184			1,070
Net loan (losses)		(2,680	)		(3,514	)		(3,532	)
Balance, end of period	$	33,047		$	34,576		$	32,927
Components:
Allowance for loan losses	$	30,354		$	31,883		$	30,234
Liability for off-balance sheet credit exposure		2,693			2,693			2,693
Allowance for credit losses	$	33,047		$	34,576		$	32,927
Net loan (losses) recoveries:
Originated loans	$	(2,326	)	$	(3,163	)	$	(3,842	)
Purchased covered loans		(354	)		(351	)		(140	)
Purchased non-covered loans		-			-			450
Net loan losses (recoveries) as a percentage of average loans:
Originated loans		0.57	%		0.69	%		0.91	%
Purchased covered loans		0.39	%		0.28	%		0.14	%
Purchased non-covered loans		-	%		-	%		(2.31	%)

The Company's allowance for credit losses is maintained at a level considered appropriate to provide for losses that can be estimated based upon specific and general conditions. These include conditions unique to individual borrowers, as well as overall credit loss experience, the amount of past due, nonperforming and classified loans, FDIC loss-sharing indemnification, recommendations of regulatory authorities, prevailing economic conditions and other factors. A portion of the allowance is specifically allocated to impaired loans whose full collectability of principal is uncertain. Such allocations are determined by Management based on loan-by-loan analyses. The Company evaluates all classified loans and nonaccrual loans with outstanding principal balances in excess of $500 thousand, and all “troubled debt restructured” loans for impairment. A second allocation is based in part on quantitative analyses of historical credit loss experience, in which historical originated classified credit balances are analyzed using a statistical model to determine standard loss rates for originated loans. The results of this analysis are applied to originated classified loan balances to allocate the allowance to the respective segments of the loan portfolio. In addition, originated loans with similar characteristics not usually criticized using regulatory guidelines are analyzed based on the historical loss rates and delinquency trends, grouped by the number of days the payments on these loans are delinquent. Given currently weak economic conditions, Management is applying further analysis to originated consumer installment loans. Current levels of originated consumer installment loan losses are compared to initial allowance allocations and, based on Management’s judgment, additional allocations are applied, if needed, to estimate losses. For originated residential real estate loans, Management is comparing ultimate loss rates on foreclosed residential real estate properties and applying such loss rates to nonaccrual originated residential real estate loans. Based on this analysis, Management exercises judgment in allocating additional allowance if deemed appropriate to estimate losses on originated residential real estate loans.Last, allocations are made to originated non-classified commercial and commercial real estate loans based on historical loss rates and other statistical data.

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Purchased loans were not underwritten using the Company’s credit policies and practices. Thus, the historical loss rates for originated loans are not applied to estimate credit losses for purchased loans. Purchased loans were recorded on the date of purchase at estimated fair value; fair value discounts include a component for estimated credit losses. The Company evaluates all nonaccrual purchased loans with outstanding principal balances in excess of $500 thousand for impairment; the impaired loan value is compared to the recorded investment in the loan, which has been reduced by the credit default discount estimated on the date of purchase. If Management’s impairment analysis determines the impaired loan value is less than the recorded investment in the purchased loan, an allocation of the allowance for credit losses is established, net of estimated FDIC indemnification. For all other purchased loans, Management evaluates post-acquisition historical credit losses on purchased loans, credit default discounts on purchased loans, and other data to evaluate the likelihood of realizing the recorded investment of purchased loans. Management establishes allocations of the allowance for credit losses for any estimated deficiency.

The remainder of the allowance is considered to be unallocated. The unallocated allowance is established to provide for probable losses that have been incurred as of the reporting date but not reflected in the allocated allowance. The unallocated allowance addresses additional qualitative factors consistent with Management's analysis of the level of risks inherent in the loan portfolio, which are related to the risks of the Company's general lending activity. Included in the unallocated allowance is the risk of losses that are attributable to national or local economic or industry trends which have occurred but have not yet been recognized in loan chargeoff history (external factors). The external factors evaluated by the Company and the judgmental amount of unallocated reserve assigned by Management as of March 31, 2013 are: economic and business conditions $1.1 million, external competitive issues $800 thousand, and other factors. Also included in the unallocated allowance is the risk of losses attributable to general attributes of the Company's loan portfolio and credit administration (internal factors). The internal factors evaluated by the Company and the judgmental amount of unallocated reserve assigned by Management are: loan review system $800 thousand, adequacy of lending Management and staff $800 thousand, loan policies and procedures $800 thousand, purchased loans $568 thousand, concentrations of credit $800 thousand, and other factors. By their nature, these risks are not readily allocable to any specific loan category in a statistically meaningful manner and are difficult to quantify with a specific number. Management assigns a range of estimated risk to the qualitative risk factors described above based on Management's judgment as to the level of risk, and assigns a quantitative risk factor from the range of loss estimates to determine the appropriate level of the unallocated portion of the allowance.

	Allowance for Credit Losses For the Three Months Ended March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment and Other			Purchased Non-covered Loans		Purchased Covered Loans			Unallocated		Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,445		$	10,063		$	484		$	380		$	3,194		$	-	$	1,005		$	8,663	$	30,234
Additions:
Provision		531			994			(4	)		246			281			-		87			665		2,800
Deductions:
Chargeoffs		(1,902	)		(113	)		-			(87	)		(1,308	)		-		(359	)		-		(3,769	)
Recoveries		462			21			-			-			601			-		5			-		1,089
Net loan losses		(1,440	)		(92	)		-			(87	)		(707	)		-		(354	)		-		(2,680	)
Balance at end of period		5,536			10,965			480			539			2,768			-		738			9,328		30,354
Liability for off-balance sheet credit exposure		1,663			3			-			-			453			-		-			574		2,693
Total allowance for credit losses	$	7,199		$	10,968		$	480		$	539		$	3,221		$	-	$	738		$	9,902	$	33,047

	Recorded Investment in Loans Evaluated for Impairment At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non-covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	886	$	584	$	-	$	-	$	100	$	-	$	723	$	-	$	2,293
Collectively evaluated for impairment		6,313		10,384		480		539		3,121		-		15		9,902		30,754
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	7,199	$	10,968	$	480	$	539	$	3,221	$	-	$	738	$	9,902	$	33,047
Carrying value of loans:
Individually evaluated for impairment	$	2,171	$	3,319	$	-	$	-	$	-	$	5,196	$	16,086	$	-	$	26,772
Collectively evaluated for impairment		316,331		621,866		7,920		213,919		447,870		59,348		329,367		-		1,996,621
Purchased loans with evidence of credit deterioration		-		-		-		-		-		5,960		7,581		-		13,541
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504	$	353,034	$	-	$	2,036,934

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Management considers the $33.0 million allowance for credit losses to be adequate as a reserve against credit losses inherent in the loan portfolio as of March 31, 2013.

See Note 4 to the unaudited consolidated financial statements for additional information related to the loan portfolio, loan portfolio credit risk, and allowance for credit losses.

Asset/Liability and Market Risk Management

Asset/liability management involves the evaluation, monitoring and management of interest rate risk, market risk, liquidity and funding. The fundamental objective of the Company's management of assets and liabilities is to maximize its economic value while maintaining adequate liquidity and a conservative level of interest rate risk.

Interest Rate Risk

Interest rate risk is a significant market risk affecting the Company. Interest rate risk results from many factors. Assets and liabilities may mature or re-price at different times. Assets and liabilities may re-price at the same time but by different amounts. Short-term and long-term market interest rates may change by different amounts. The timing and amount of cash flows of various assets or liabilities may shorten or lengthen as interest rates change. In addition, interest rates may have an impact on loan demand, demand for various deposit products, credit losses, and other sources of earnings such as account analysis fees on commercial deposit accounts and correspondent bank service charges.

The Federal Open Market Committee’s March 20, 2013 press release stated ”the Committee decided to keep the target range for the federal funds rate at 0 to 1/4 percent and currently anticipates that this exceptionally low range for the federal funds rate will be appropriate at least as long as the unemployment rate remains above 6-1/2 percent, inflation between one and two years ahead is projected to be no more than a half percentage point above the Committee’s 2 percent longer-run goal, and longer-term inflation expectations continue to be well anchored. In determining how long to maintain a highly accommodative stance of monetary policy, the Committee will also consider other information, including additional measures of labor market conditions, indicators of inflation pressures and inflation expectations, and readings on financial developments. When the Committee decides to begin to remove policy accommodation, it will take a balanced approach consistent with its longer-run goals of maximum employment and inflation of 2 percent”. In this context, Management’s most likely earnings forecast for the twelve months ending March 31, 2014 assumes market interest rates remain relatively stable and yields on newly originated or refinanced loans and on purchased investment securities will reflect current interest rates, which are lower than yields on the Company’s older dated loans and investment securities.

In adjusting the Company's asset/liability position, Management attempts to manage interest rate risk while enhancing the net interest margin and net interest income. At times, depending on expected increases or decreases in general interest rates, the relationship between long and short term interest rates, market conditions and competitive factors, Management may adjust the Company's interest rate risk position in order to manage its net interest margin and net interest income. The Company's results of operations and net portfolio values remain subject to changes in interest rates and to fluctuations in the difference between long and short term interest rates.

The Company’s asset and liability position ranged from “neutral” to slightly “liability sensitive” at March 31, 2013, depending on the interest rate assumptions applied to the simulation model employed by Management to measure interest rate risk. A “neutral” position results in similar amounts of change in interest income and interest expense resulting from application of assumed interest rate changes. A slightly “liability sensitive” position results in a slightly larger change in interest expense than in interest income resulting from application of assumed interest rate changes. Simulation estimates depend on, and will change with, the size and mix of the actual and projected balance sheet at the time of each simulation. Management’s interest rate risk management is currently biased toward stable interest rates in the near-term, and ultimately, rising interest rates. Management continues to monitor the interest rate environment as well as economic conditions and other factors it deems relevant in managing the Company's exposure to interest rate risk.

The Company does not currently engage in trading activities or use derivative instruments to control interest rate risk, even though such activities may be permitted with the approval of the Company's Board of Directors.

Market Risk - Equity Markets

Equity price risk can affect the Company. As an example, any preferred or common stock holdings, as permitted by banking regulations, can fluctuate in value. Management regularly assesses the extent and duration of any declines in market value, the causes of such declines, the likelihood of a recovery in market value, and its intent to hold securities until a recovery in value occurs. Declines in value of preferred or common stock holdings that are deemed “other than temporary” could result in loss recognition in the Company's income statement.

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Fluctuations in the Company's common stock price can impact the Company's financial results in several ways. First, the Company has regularly repurchased and retired its common stock; the market price paid to retire the Company's common stock can affect the level of the Company's shareholders' equity, cash flows and shares outstanding. Second, the Company's common stock price impacts the number of dilutive equivalent shares used to compute diluted earnings per share. Third, fluctuations in the Company's common stock price can motivate holders of options to purchase Company common stock through the exercise of such options thereby increasing the number of shares outstanding. Finally, the amount of compensation expense associated with share based compensation fluctuates with changes in and the volatility of the Company's common stock price.

Market Risk - Other

Market values of loan collateral can directly impact the level of loan charge-offs and the provision for loan losses. The financial condition and liquidity of debtors issuing bonds and debtors whose mortgages or other obligations are securitized can directly impact the credit quality of the Company’s investment portfolio requiring the Company to recognize other than temporary impairment charges. Other types of market risk, such as foreign currency exchange risk and commodity price risk, are not significant in the normal course of the Company's business activities.

Liquidity and Funding

The objective of liquidity management is to manage cash flow and liquidity reserves so that they are adequate to fund the Company's operations and meet obligations and other commitments on a timely basis and at a reasonable cost. The Company achieves this objective through the selection of asset and liability maturity mixes that it believes best meet its needs. The Company's liquidity position is enhanced by its ability to raise additional funds as needed in the wholesale markets.

In recent years, the Company's deposit base has provided the majority of the Company's funding requirements. This relatively stable and low-cost source of funds, along with shareholders' equity, provided 97 percent and 96 percent of funding for average total assets in the first quarter 2013 and the year 2012, respectively. The stability of the Company’s funding from customer deposits is reliant on the confidence clients have in the Company. The Company places a very high priority in maintaining this confidence through conservative credit and capital management practices and by maintaining an appropriate level of liquidity reserves.

Effective December 31, 2010, the Dodd-Frank Act required unlimited FDIC deposit insurance on all non-interest bearing transaction accounts and mandated participation by all member banks. This requirement and mandate expired on December 31, 2012, at which time unlimited FDIC insurance on non-interest bearing transaction accounts came to an end. Upon expiration, the standard maximum FDIC insurance coverage returned to $250,000 for non-interest bearing transaction accounts. The change in deposit insurance did not have a significant impact to the Company's deposit levels.

During 2012 and the first quarter of 2013, non-deposit funding has been obtained through short-term borrowings, a term repurchase agreement, Federal Home Loan Bank advances, and long-term debt financing. These non-deposit sources of funds comprise a modest portion of total funding.

Liquidity is further provided by assets such as balances held at the Federal Reserve Bank, investment securities, and amortizing loans. The Company's investment securities portfolio provides a substantial secondary liquidity reserve. The Company held $2.1 billion in total investment securities at March 31, 2013. Under certain deposit, borrowing and other arrangements, the Company must hold and pledge investment securities as collateral. At March 31, 2013, such collateral requirements totaled approximately $872 million.

Westamerica Bancorporation ("Parent Company") is a separate entity apart from Westamerica Bank (“Bank”) and must provide for its own liquidity. In addition to its operating expenses, the Parent Company is responsible for the payment of dividends declared for its shareholders, and interest and principal on outstanding debt. The $15 million note issued by the Parent Company, as described in Note 8 to the unaudited consolidated financial statements, matures October 31, 2013. Substantially all of the Parent Company's revenues are obtained from subsidiary dividends and service fees. The Bank’s dividends paid to the Parent Company provided adequate cash flow for the Parent Company in the first quarter 2013 and first quarter 2012 to pay shareholder dividends of $10 million in each respective period, and retire common stock in the amount of $15 million and $11 million, respectively. Payment of dividends to the Parent Company by the Bank is limited under California and Federal laws. The Company believes that regulatory dividend restrictions will not have an impact on the Parent Company's ability to meet its ongoing cash obligations.

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Liquidity risk can result from the mismatching of asset and liability cash flows, or from disruptions in the financial markets. The Company performs liquidity stress tests on a periodic basis to evaluate the sustainability of its liquidity. Under the stress testing, the Company assumes outflows of funds increase beyond expected levels. Measurement of such heightened outflows considers the composition of the Company’s deposit base, including any concentration of deposits, non-deposit funding such as short-term borrowings and Federal Home Loan Bank advances, and unfunded lending commitments. The Company evaluates its stock of highly liquid assets to meet the assumed higher levels of outflows. Highly liquid assets include cash and amounts due from other banks from daily transaction settlements, reduced by branch cash needs and Federal Reserve Bank reserve requirements, and investment securities based on regulatory risk-weighting guidelines. Based on the results of the most recent liquidity stress test, Management is satisfied with the liquidity condition of the Bank and the Company. However, no assurance can be given the Bank or Company will not experience a period of reduced liquidity.

Capital Resources

The Company has historically generated relatively high levels of earnings, which provides a means of raising capital. The Company's net income as a percentage of average shareholders' equity (“return on equity” or “ROE”) has been 12.9% (annualized) in the first quarter of 2013, 14.9% in 2012 and 16.1% in 2011. The Company also raises capital as employees exercise stock options. Capital raised through the exercise of stock options totaled $6.2 million in the first quarter of 2013, $7.6 million in 2012 and $14.4 million in 2011.

The Company paid common dividends totaling $10.1 million in the first quarter of 2013, $41.0 million in 2012 and $41.7 million in 2011, which represent dividends per common share of $0.37, $1.48 and $1.45, respectively. The Company's earnings have historically exceeded dividends paid to shareholders. The amount of earnings in excess of dividends gives the Company resources to finance growth and maintain appropriate levels of shareholders' equity. In the absence of profitable growth opportunities, the Company has repurchased and retired its common stock as another means to provide returns to shareholders. The Company repurchased and retired 347 thousand shares valued at $15.4 million in the first quarter of 2013, 1.1 million shares valued at $51.5 million in 2012 and 1.3 million shares valued at $60.5 million in 2011.

The Company's ratio of equity to total assets was 11.44% at March 31, 2013 compared to 11.31% at December 31, 2012.

The Company performs capital stress tests on a periodic basis to evaluate the sustainability of its capital. Under the stress testing, the Company assumes various scenarios such as deteriorating economic and operating conditions, unanticipated asset devaluations, and significant operational lapses. The Company measures the impact of these scenarios on its earnings and capital. Based on the results of the most recent stress tests, Management is satisfied with the capital condition of the Bank and the Company. However, no assurance can be given the Bank or Company will not experience a period of reduced earnings or a reduction in capital from unanticipated events and circumstances.

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Capital to Risk-Adjusted Assets

The following summarizes the ratios of regulatory capital to risk-adjusted assets for the Company on the dates indicated:

										Minimum			Well-capitalized
	At March 31,						At December 31,			Regulatory			by Regulatory
	2013			2012			2012			Requirement			Definition
Tier I Capital		14.71	%		14.83	%		15.06	%		4.00	%		6.00	%
Total Capital		15.99	%		16.09	%		16.33	%		8.00	%		10.00	%
Leverage ratio		8.56	%		8.36	%		8.56	%		4.00	%		5.00	%

The following summarizes the ratios of capital to risk-adjusted assets for the Bank on the dates indicated:

										Minimum			Well-capitalized
	At March 31,						At December 31,			Regulatory			by Regulatory
	2013			2012			2012			Requirement			Definition
Tier I Capital		13.57	%		14.13	%		14.14	%		4.00	%		6.00	%
Total Capital		15.07	%		15.62	%		15.62	%		8.00	%		10.00	%
Leverage ratio		7.85	%		7.92	%		7.99	%		4.00	%		5.00	%

FDIC-covered assets are generally included in the 20% risk-weighted category due to loss-sharing agreements, under which loss reimbursement expires on February 6, 2019 as to the residential real estate covered assets and on February 6, 2014 as to non-residential real estate covered assets. Subsequent to such dates, previously FDIC-indemnified assets will generally be included in the 100% risk-weight category.

On June 7, 2012, the Federal Reserve Board invited comment on three proposed rules intended to improve the quality and increase the quantity of capital in the banking industry. The proposals’ provisions which would most affect the regulatory capital requirements of the Company and the Bank:

·   Redefine the type of capital which qualifies as regulatory capital in a manner which is more restrictive than current rules,

·   Introduce a new “Common Equity Tier 1” capital measurement,

·   Establish higher minimum levels of capital,

·   Introduce a “capital conservation buffer,”

·   Increase the risk-weighting of certain assets and commitments, in particular construction loans, loans on nonaccrual status, loans 90 days or more past due, short-term credit commitments, and deferred tax assets, and

·   Alter the risk-weightings on residential real estate loans based on loan quality (underwriting standards and terms) and the loan-to-value ratio determined at time of origination or subsequent restructuring or modification.

Under the proposals, any bank subject to the rules which is unable to maintain its “capital conservation buffer” will be restricted in the payment of discretionary executive compensation and shareholder distributions, as an example dividends and share repurchases. The proposals have phase-in schedules for the various provisions; the higher minimum capital requirements are fully phased-in by January 1, 2015 and the “capital conservation buffer” and changed risk-weightings are fully phased-in by January 1, 2019. The proposals have not been amended or finalized as of March 31, 2013.

These proposals do not supersede the Federal Deposit Insurance Corporation Improvement Act (FDICIA) requiring federal banking agencies to take prompt corrective action (PCA) to resolve problems of insured depository institutions. The proposals would revise the PCA thresholds to incorporate the proposed regulatory capital minimums, including the newly proposed “common equity tier 1” ratios.

- 46 -

Management has evaluated the capital structure and assets for the Company and the Bank as of March 31, 2013 assuming (1) the Federal Reserve’s proposed rules were currently fully phased-in and (2) the FDIC indemnification of the Bank’s purchased covered assets had expired, causing an increase in risk-weightings on such assets. Based on this evaluation, the Company and the Bank currently maintain capital in excess of all the proposed regulatory ratios, as follows:

	Proposed Minimum Capital Requirement			"Well-capitalized" Under PCA Proposal			Proposed Minimum Plus "Capital Conservation Buffer"			Proforma Measurements as of March 31, 2013 Assuming New Proposals Fully Phased-in and Covered Asset Indemnification Expired
										Company			Bank
Capital Measurement:
Leverage		4.00	%		5.00	%		4.00	%		8.84	%		8.12	%
Common Equity Tier 1		4.50	%		6.50	%		7.00	%		13.77	%		12.71	%
Tier I Capital		6.00	%		8.00	%		8.50	%		13.77	%		12.71	%
Total Capital		8.00	%		10.00	%		10.50	%		14.84	%		13.79	%

The Company and the Bank intend to maintain regulatory capital in excess of the highest regulatory standard. The Company and the Bank routinely project capital levels by analyzing forecasted earnings, credit quality, securities valuations, shareholder dividends, asset volumes, share repurchase activity, stock option exercise proceeds, and other factors. Based on current capital projections, the Company and the Bank expect to maintain regulatory capital levels exceeding the highest effective regulatory standard and pay quarterly dividends to shareholders. No assurance can be given that changes in capital management plans will not occur.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The Company does not currently engage in trading activities or use derivative instruments to control interest rate risk, even though such activities may be permitted with the approval of the Company’s Board of Directors.

Credit risk and interest rate risk are the most significant market risks affecting the Company, and equity price risk can also affect the Company’s financial results. These risks are described in the preceding sections regarding “Loan Portfolio Credit Risk,” and “Asset/Liability and Market Risk Management.” Other types of market risk, such as foreign currency exchange risk and commodity price risk, are not significant in the normal course of the Company’s business activities.

Item 4. Controls and Procedures

The Company’s principal executive officer and principal financial officer have evaluated the effectiveness of the Company’s “disclosure controls and procedures,” as such term is defined in Rule 13a-15(e) of the Securities Exchange Act of 1934, as amended, as of March 31, 2013.

Based upon their evaluation, the principal executive officer and principal financial officer concluded that the Company’s disclosure controls and procedures are effective to ensure that material information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported as and when required and that such information is communicated to the Company’s management, including the principal executive officer and the principal financial officer, to allow for timely decisions regarding required disclosures. The evaluation did not identify any change in the Company’s internal control over financial reporting that occurred during the quarter ended March 31, 2013 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

Due to the nature of its business, the Company is subject to various threatened or filed legal cases resulting from loan collection efforts, transaction processing for deposit accounts including the order of posting transactions and the assessment of overdraft fees, and employment practices. The Company establishes a liability for contingent litigation losses for any legal matter when payments associated with the claims become probable and the costs can be reasonably estimated. Legal costs related to covered assets are eighty percent indemnified under loss-sharing agreements with the FDIC if certain conditions are met.

- 47 -

Item 1A. Risk Factors

The Company’s Form 10-K as of December 31, 2012 includes detailed disclosure about the risks faced by the Company’s business; such risks have not materially changed since the Form 10-K was filed.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a) Previously reported on Form 8-K.

(b) None

(c) Issuer Purchases of Equity Securities

The table below sets forth the information with respect to purchases made by or on behalf of the Company or any “affiliated purchaser” (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of common stock during the quarter ended March 31, 2013.

Period	(a) Total Number of Shares Purchased		(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs*		(d) Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
(In thousands, except per share data)
January 1 through January 31		124		$44.19		124		1,364
February 1 through February 28		129		44.36		129		1,235
March 1 through March 31		94		45.00		94		1,141
Total		347		$44.47		347		1,141

* Includes 5 thousand, 8 thousand and 6 thousand shares purchased in January, February and March, respectively, by the Company in private transactions with the independent administrator of the Company's Tax Deferred Savings/Retirement Plan (ESOP). The Company includes the shares purchased in such transactions within the total number of shares authorized for purchase pursuant to the currently existing publicly announced program.

The Company repurchases shares of its common stock in the open market to optimize the Company’s use of equity capital and enhance shareholder value and with the intention of lessening the dilutive impact of issuing new shares to meet stock performance, option plans, and other ongoing requirements.

Shares were repurchased during the first quarter of 2013 pursuant to a program approved by the Board of Directors on July 26, 2012, authorizing the purchase of up to 2 million shares of the Company’s common stock from time to time prior to September 1, 2013.

Item 3. Defaults upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable.

- 48 -

Item 5. Other Information

(a) Submission of Matters to a Vote of Security Holders

Proxies for the Annual Meeting of shareholders held on April 25, 2013, were solicited pursuant Regulation 14A of the Securities Exchange Act of 1934. The Report of Inspector of election indicates that 23,442,021 shares of the Common Stock of the Company, out of 27,159,429 shares outstanding on the February 25, 2013 record date, were present, in person or by proxy, at the meeting. The following matters were submitted to a vote of the shareholders:

1. Election of Directors:

Nominee	For	Withheld	Non-Votes	Uncast
Etta Allen	19,569,357	122,910	3,749,754	0
Louis E. Bartolini	19,493,679	198,588	3,749,754	0
E. Joseph Bowler	19,611,586	80,681	3,749,754	0
Arthur C. Latno, Jr.	16,932,960	2,759,307	3,749,754	0
Patrick D. Lynch	19,493,387	198,880	3,749,754	0
Catherine C. MacMillan	19,577,750	114,517	3,749,754	0
Ronald A. Nelson	19,578,103	114,164	3,749,754	0
David L. Payne	19,418,539	273,728	3,749,754	0
Edward B. Sylvester	19,536,893	155,374	3,749,754	0

2. Approval of a Non-Binding Advisory Vote on Executive Compensation

For	Against	Abstain	Non-Votes	Uncast
19,254,408	167,020	270,839	3,749,754	0

3. Approval of Selection of KPMG as Company’s Independent Auditors for Fiscal Year 2013

For	Against	Abstain	Non-Votes	Uncast
23,216,067	61,547	164,407	0	0

Item 6. Exhibits

The exhibit list required by this item is incorporated by reference to the Exhibit Index filed with this report.

- 49 -

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WESTAMERICA BANCORPORATION

(Registrant)

/s/ JOHN "ROBERT" THORSON

John "Robert" Thorson

Senior Vice President and Chief Financial Officer

(Chief Financial and Accounting Officer)

Date: May 1, 2013

- 50 -

EXHIBIT INDEX

Exhibit 31.1:  Certification of Chief Executive Officer pursuant to Securities Exchange Act Rule 13a-14(a)/15d-14(a)

Exhibit 31.2:  Certification of Chief Financial Officer pursuant to Securities Exchange Act Rule 13a-14(a)/15d-14(a)

Exhibit 32.1: Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32.2:  Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 101:  Pursuant to Rule 405 of Regulation S-T, the following financial information from the Company’s Quarterly Report on Form 10-Q for the period ended March 31, 2013, is formatted in XBRL interactive data files: (i) Consolidated Statements of Income for the three months ended March 31, 2013 and 2012; (ii) Consolidated Balance Sheets at March 31, 2013, and December 31, 2012; (iii) Consolidated Statements of Comprehensive Income for the three months ended March 31, 2013 and 2012, (iv) Consolidated Statements of Changes in Shareholders’ Equity for the three months ended March 31, 2013 and 2012; (v) Consolidated Statements of Cash Flows for the three months ended March 31, 2013 and 2012 and (vi) Notes to the unaudited Consolidated Financial Statements.

- 51 -

EX-31.1

EXHIBIT 31.1

CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, David L. Payne certify that:

1. I have reviewed this report on Form 10-Q of Westamerica Bancorporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

/s/  David L. Payne

David L. Payne

Chairman, President and Chief Executive Officer

Date: May 1, 2013

- 52 -

EX-31.2

EXHIBIT 31.2

CERTIFICATION UNDER  SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John "Robert" Thorson certify that:

1. I have reviewed this report on Form 10-Q of Westamerica Bancorporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

/s/  John "Robert" Thorson

John “Robert” Thorson

Senior Vice President and Chief Financial Officer

Date: May 1, 2013

- 53 -

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Westamerica Bancorporation (the Company) on Form 10-Q for the period ended March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, David L. Payne, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  David L. Payne

David L. Payne

Chairman, President and Chief Executive Officer

Date: May 1, 2013

- 54 -

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Westamerica Bancorporation (the Company) on Form 10-Q for the period ended March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, John "Robert" Thorson, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  John "Robert" Thorson

John “Robert” Thorson

Senior Vice President and Chief Financial Officer

Date: May 1, 2013

- 55 -

XML

Note 4 - Loans and Allowance for Credit Losses (Detail) - Loans by delinquency and nonaccrual status (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Current and Accruing	$ 1,983,655		$ 2,050,959
30-89 Days Past Due and Accruing	23,738		27,489
Past Due 90 days or More and Accruing	393		614
Nonaccrual	29,148		32,295
Total Loans	2,036,934		2,111,357
Originated Loans [Member] | Commercial Portfolio Segment [Member]
Current and Accruing	313,381		333,474
30-89 Days Past Due and Accruing	2,493		1,032
Nonaccrual	2,628		5,610
Total Loans	318,502		340,116
Originated Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Current and Accruing	613,517		616,276
30-89 Days Past Due and Accruing	6,427		10,750
Nonaccrual	5,241		5,901
Total Loans	625,185		632,927
Originated Loans [Member] | Construction Portfolio Segment [Member]
Current and Accruing	7,920		7,984
Total Loans	7,920		7,984
Originated Loans [Member] | Residential Portfolio Segment [Member]
Current and Accruing	213,353		220,032
30-89 Days Past Due and Accruing	333		2,193
Nonaccrual	233		233
Total Loans	213,919		222,458
Originated Loans [Member] | Consumer Portfolio Segment [Member]
Current and Accruing	444,284		455,007
30-89 Days Past Due and Accruing	3,224		5,205
Past Due 90 days or More and Accruing	305		455
Nonaccrual	57		31
Total Loans	447,870		460,698
Originated Loans [Member]
Current and Accruing	1,592,455		1,632,773
30-89 Days Past Due and Accruing	12,477		19,180
Past Due 90 days or More and Accruing	305		455
Nonaccrual	8,159		11,775
Total Loans	1,613,396		1,664,183
Purchased Non-Covered Loans [Member]
Current and Accruing	60,242		65,567
30-89 Days Past Due and Accruing	1,150		1,821
Past Due 90 days or More and Accruing			4
Nonaccrual	9,112		7,499
Total Loans	70,504		74,891
Purchased Covered Loans [Member]
Current and Accruing	330,958		352,619
30-89 Days Past Due and Accruing	10,111		6,488
Past Due 90 days or More and Accruing	88		155
Nonaccrual	11,877		13,021
Total Loans	353,034	[1]	372,283	[1]
Commercial Portfolio Segment [Member]
Total Loans	379,124		401,331
Commercial Real Estate Portfolio Segment [Member]
Total Loans	893,247		916,594
Construction Portfolio Segment [Member]
Total Loans	15,685		16,515
Residential Portfolio Segment [Member]
Total Loans	224,244		234,035
Consumer Portfolio Segment [Member]
Total Loans	$ 524,634		$ 542,882

[1] Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

XML

Note 9 - Fair Value Measurements (Detail) - Assets measured at fair value on a nonrecurring basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value	$ 22,202	$ 26,428
Total Losses	(2,268)	(4,972)
Non-Covered Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	5,869	6,618
Non-Covered Other Real Estate Owned [Member]
Fair Value	5,869	6,618
Total Losses	(446)	(1,360)
Covered Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	8,055	7,929
Covered Other Real Estate Owned [Member]
Fair Value	8,055	7,929
Total Losses	(146)	(371)
Originated Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	2,628	3,097
Originated Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value	990	2,100
Originated Impaired Loans [Member]
Fair Value	3,618	5,197
Total Losses	(1,676)	(3,158)
Purchased Covered Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	200	2,224
Purchased Covered Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value	4,460	4,460
Purchased Covered Impaired Loans [Member]
Fair Value	4,660	6,684
Total Losses		(83)
Fair Value, Inputs, Level 2 [Member]
Fair Value	16,752	19,868
Fair Value, Inputs, Level 3 [Member]
Fair Value	$ 5,450	$ 6,560

XML

Note 7 - Goodwill and Identifiable Intangible Assets (Detail) - Gross carrying amount of identifiable intangible assets and accumulated amortization (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Gross Carrying Amount	$ 67,108	$ 67,108
Accumulated Amortization	(45,066)	(43,847)
Core Deposits [Member]
Gross Carrying Amount	56,808	56,808
Accumulated Amortization	(36,045)	(34,938)
Mechant Draft Processing [Member]
Gross Carrying Amount	10,300	10,300
Accumulated Amortization	$ (9,021)	$ (8,909)

XML

Note 9 - Fair Value Measurements (Detail) - Fair value estimates for financial instruments, excluding financial instruments recorded at fair value on a recurring basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Cash and due from banks	$ 355,459	$ 491,382
Investment securities held to maturity	1,162,358	1,156,041
Loans	2,006,580	2,081,123
Other assets - FDIC receivable	12,162	13,847
Deposits	4,161,950	4,232,492
Short-term borrowed funds	61,854	53,687
Federal Home Loan Bank advances	25,743	25,799
Term repurchase agreement	10,000	10,000
Debt financing	15,000	15,000
Estimate of Fair Value, Fair Value Disclosure [Member]
Cash and due from banks	355,459	491,382
Investment securities held to maturity	1,185,641	1,184,557
Loans	2,014,826	2,090,712
Other assets - FDIC receivable	12,155	13,834
Deposits	4,161,713	4,232,239
Short-term borrowed funds	61,854	53,687
Federal Home Loan Bank advances	26,014	26,150
Term repurchase agreement	10,114	10,135
Debt financing	15,365	15,645
Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	355,459	491,382
Investment securities held to maturity	2,775	3,275
Federal Home Loan Bank advances	26,014	26,150
Fair Value, Inputs, Level 2 [Member]
Investment securities held to maturity	1,182,866	1,181,282
Deposits	3,554,131	3,589,921
Short-term borrowed funds	61,854	53,687
Term repurchase agreement	10,114	10,135
Debt financing	15,365	15,645
Fair Value, Inputs, Level 3 [Member]
Loans	2,014,826	2,090,712
Other assets - FDIC receivable	12,155	13,834
Deposits	$ 607,582	$ 642,318

XML

Note 6 - Other Assets (Detail) - Other Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Federal Reserve Bank stock (1)	$ 14,069	[1]	$ 14,069	[1]
Federal Home Loan Bank stock (2)	6,615	[2]	7,353	[2]
Other investments	376		376
Total cost method equity investments	21,060		21,798
Corporate/bank-owned life insurance	45,535		45,579
Deferred taxes	42,645		42,449
LIHTC investments	20,119		20,631
Interest receivable	20,473		20,274
FDIC receivable	12,162		13,847
Prepaid assets	11,814		11,679
Other assets	11,845		11,829
Total other assets	$ 185,653		$ 188,086

[1] A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in a sum equal to six percent of the bank's paid-up capital stock and surplus. One-half of the amount of the bank's subscription shall be paid to the FRB and the remaining half will be subject to call when deemed necessary by the Board of Governors of the Federal Reserve System.

[2] Borrowings from the Federal Home Loan Bank (FHLB) must be supported by capital stock holdings. The minimum activity-based requirement is 4.7% of the outstanding advances. The requirement may be adjusted from time to time by the FHLB within limits established in the FHLB's Capital Plan.

XML

Note 4 - Loans and Allowance for Credit Losses (Detail) - Loans receivable at carrying amount (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Originated loans	$ 1,613,396	$ 1,664,183
Purchased covered loans	353,034	372,283
Purchased non-covered loans	70,504	74,891
Total	2,036,934	2,111,357
Impaired [Member] | Commercial Portfolio Segment [Member]
Purchased covered loans	293	308
Purchased non-covered loans	1,244	1,261
Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Purchased covered loans	6,899	7,585
Purchased non-covered loans	6,111	6,763
Impaired [Member] | Construction Portfolio Segment [Member]
Purchased covered loans	1,737	1,824
Impaired [Member] | Consumer Portfolio Segment [Member]
Purchased covered loans	255	257
Purchased non-covered loans	297	297
Impaired [Member]
Purchased covered loans	9,184	9,974
Purchased non-covered loans	7,652	8,321
Non Impaired [Member] | Commercial Portfolio Segment [Member]
Purchased covered loans	57,589	59,135
Purchased non-covered loans	9,367	9,840
Non Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Purchased covered loans	232,854	247,534
Purchased non-covered loans	37,548	38,673
Non Impaired [Member] | Construction Portfolio Segment [Member]
Purchased covered loans	4,942	5,462
Purchased non-covered loans	1,369	1,619
Non Impaired [Member] | Residential Portfolio Segment [Member]
Purchased covered loans	8,816	9,374
Purchased non-covered loans	2,205	3,110
Non Impaired [Member] | Consumer Portfolio Segment [Member]
Purchased covered loans	62,309	66,932
Purchased non-covered loans	16,949	18,554
Non Impaired [Member]
Purchased covered loans	366,510	388,437
Purchased non-covered loans	67,438	71,796
Purchase Discount [Member] | Commercial Portfolio Segment [Member]
Purchased covered loans	(6,958)	(8,459)
Purchased non-covered loans	(913)	(870)
Purchase Discount [Member] | Commercial Real Estate Portfolio Segment [Member]
Purchased covered loans	(13,600)	(15,140)
Purchased non-covered loans	(1,750)	(1,748)
Purchase Discount [Member] | Construction Portfolio Segment [Member]
Purchased covered loans	(188)	(279)
Purchased non-covered loans	(95)	(95)
Purchase Discount [Member] | Residential Portfolio Segment [Member]
Purchased covered loans	(434)	(433)
Purchased non-covered loans	(262)	(474)
Purchase Discount [Member] | Consumer Portfolio Segment [Member]
Purchased covered loans	(1,480)	(1,817)
Purchased non-covered loans	(1,566)	(2,039)
Purchase Discount [Member]
Purchased covered loans	(22,660)	(26,128)
Purchased non-covered loans	(4,586)	(5,226)
Commercial Portfolio Segment [Member]
Originated loans	318,502	340,116
Total	379,124	401,331
Commercial Real Estate Portfolio Segment [Member]
Originated loans	625,185	632,927
Total	893,247	916,594
Construction Portfolio Segment [Member]
Originated loans	7,920	7,984
Total	15,685	16,515
Residential Portfolio Segment [Member]
Originated loans	213,919	222,458
Total	224,244	234,035
Consumer Portfolio Segment [Member]
Originated loans	447,870	460,698
Total	$ 524,634	$ 542,882

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Note 11 - Earnings Per Common Share (Detail) (Stock Options [Member]) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,317	1,998

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Note 11 - Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Earnings Per Share Reconciliation [Table Text Block]

	For the Three Months Ended March 31,
	2013		2012
	(In thousands, except per share data)
Net income applicable to common equity (numerator)	$	17,271	$	21,005
Basic earnings per common share
Weighted average number of common shares outstanding - basic (denominator)		27,145		28,051
Basic earnings per common share	$	0.64	$	0.75
Diluted earnings per common share
Weighted average number of common shares outstanding - basic		27,145		28,051
Add exercise of options reduced by the number of shares that could have been purchased with the proceeds of such exercise		12		60
Weighted average number of common shares outstanding - diluted (denominator)		27,157		28,111
Diluted earnings per common share	$	0.64	$	0.75

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Note 8 - Deposits and Borrowed Funds (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Deposits	$ 4,161,950		$ 4,232,492
Demand Deposit, Overdrafts	2,942		6,307
Interest Expense, Time Deposits, $100,000 or More	304	423
Short-term Debt	61,854		53,687
Long-term Federal Home Loan Bank Advances	25,743		25,799
Federal Home Loan Bank, Advances, Maturities Summary, Due in Remainder of Fiscal Year	5,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two	20,000
Securities Sold under Agreements to Repurchase	10,000		10,000
Line of Credit Facility, Maximum Borrowing Capacity	35,000
Debt Instrument, Interest Rate, Stated Percentage	2.00%
Unsecured Debt	15,000		15,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	5.31%
Short-term Debt [Member]
Pledged Financial Instruments, Not Separately Reported, Other Debt Securities Available-for-sale or Held-for-investment	112,182
Securities Sold Under Agreement To Repurchase [Member]
Pledged Financial Instruments, Not Separately Reported, Other Debt Securities Available-for-sale or Held-for-investment	14,621
Residential Real Estate Loans [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	28,843
Securities [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 9,701

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Impaired loans, supplemental schedule (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Average Recored Investment	$ 46,995	$ 48,361
Recognized Interest Income	387	546
Commercial [Member]
Average Recored Investment	13,729	6,576
Recognized Interest Income	54	50
Commercial Real Estate Loans [Member]
Average Recored Investment	28,507	32,119
Recognized Interest Income	300	378
Construction [Member]
Average Recored Investment	2,111	6,461
Recognized Interest Income	26	100
Residential Real Estate Loans [Member]
Average Recored Investment	685	311
Consumer Installment And Other [Member]
Average Recored Investment	1,963	2,894
Recognized Interest Income	$ 7	$ 18

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Recorded investment in loans evaluated for impairment (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012		Mar. 31, 2012
Allowance for credit losses:
Individually evaluated for impairment	$ 2,193		$ 2,752
Collectively evaluated for impairment	30,854		30,175
Total	33,047		32,927		34,576
Carrying value of loans:
Individually evaluated for impairment	26,772		29,023
Collectively evaluated for impairment	1,996,621		2,067,705
Purchased loans with evidence of credit deterioration	13,541		14,629
Total	2,036,934		2,111,357
Commercial [Member]
Allowance for credit losses:
Individually evaluated for impairment	886		1,865
Collectively evaluated for impairment	6,313		6,314
Total	7,199		8,179		8,457
Carrying value of loans:
Individually evaluated for impairment	2,171		5,153
Collectively evaluated for impairment	316,331		334,963
Total	318,502		340,116
Commercial Real Estate Loans [Member]
Allowance for credit losses:
Individually evaluated for impairment	584		134
Collectively evaluated for impairment	10,384		9,938
Total	10,968		10,072		11,427
Carrying value of loans:
Individually evaluated for impairment	3,319		4,161
Collectively evaluated for impairment	621,866		628,766
Total	625,185		632,927
Construction [Member]
Allowance for credit losses:
Collectively evaluated for impairment	480		484
Total	480		484		2,781
Carrying value of loans:
Collectively evaluated for impairment	7,920		7,984
Total	7,920		7,984
Residential Real Estate Loans [Member]
Allowance for credit losses:
Collectively evaluated for impairment	539		380
Total	539		380		645
Carrying value of loans:
Collectively evaluated for impairment	213,919		222,458
Total	213,919		222,458
Consumer Installment And Other [Member]
Allowance for credit losses:
Collectively evaluated for impairment	3,221		3,613
Total	3,221		3,613		3,014
Carrying value of loans:
Collectively evaluated for impairment	447,870		460,698
Total	447,870		460,698
Purchased Non-Covered Loans [Member]
Carrying value of loans:
Individually evaluated for impairment	5,196		3,029
Collectively evaluated for impairment	59,348		65,098
Purchased loans with evidence of credit deterioration	5,960		6,764
Total	70,504		74,891
Purchased Covered Loans [Member]
Allowance for credit losses:
Individually evaluated for impairment	723		753
Collectively evaluated for impairment	15		252
Total	738		1,005		139
Carrying value of loans:
Individually evaluated for impairment	16,086		16,680
Collectively evaluated for impairment	329,367		347,738
Purchased loans with evidence of credit deterioration	7,581		7,865
Total	353,034	[1]	372,283	[1]
Unallocated Financing Receivable [Member]
Allowance for credit losses:
Collectively evaluated for impairment	9,902		9,194
Total	$ 9,902		$ 9,194		$ 8,113

[1] Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

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Note 9 - Fair Value Measurements (Detail) (USD $) In Thousands, unless otherwise specified											3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Purchased Covered Loans [Member]	Dec. 31, 2012 Purchased Covered Loans [Member]	Mar. 31, 2012 Purchased Covered Loans [Member]	Mar. 31, 2013 Purchased Non-Covered Loans [Member]	Dec. 31, 2012 Purchased Non-Covered Loans [Member]	Mar. 31, 2013 Fair Value, Inputs, Level 2 [Member]
Fair Value Inputs, Discount Rate											10.00%
Loans and Leases Receivable, Allowance	$ 30,354	$ 30,234	$ 30,354	$ 31,883	$ 32,597	$ 738	$ 1,005	$ 139
Fair Value Discount, Credit Default Risk, Purchased Loans						$ 22,660	$ 26,128		$ 4,587	$ 5,226

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Note 7 - Goodwill and Identifiable Intangible Assets (Detail) - Carrying values of goodwill (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
March 31, 2013	$ 121,673	$ 121,673
December 31, 2012	$ 121,673	$ 121,673

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Note 2 - Accounting Policies

3 Months Ended

Mar. 31, 2013

Significant Accounting Policies [Text Block]

Note 2: Accounting Policies

The Company’s accounting policies are discussed in Note 1 to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.  Certain amounts in prior periods have been reclassified to conform to the current presentation.

Certain accounting policies underlying the preparation of these financial statements require Management to make estimates and judgments. These estimates and judgments may significantly affect reported amounts of assets and liabilities, revenues and expenses, and disclosures of contingent assets and liabilities. Management exercises judgment to estimate the appropriate level of the allowance for credit losses, the acquisition date fair value of purchased loans, and the evaluation of other than temporary impairment of investment securities, which are discussed in the Company’s accounting policies.

Recently Adopted Accounting Standards

FASB ASU 2012-06, Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution, was issued October 2012 to provide guidance for consistently measuring an indemnification asset subsequent to acquisition.  Subsequent accounting for changes in the measurement of the indemnification asset should be on the same basis as a change in the assets subject to indemnification. Any amortization of changes in value is limited to the shorter of the contractual term of the indemnification agreement or the remaining life of the indemnified assets. The Company’s historical accounting treatment is consistent with ASU 2012-06, therefore there was no effect on the Company’s financial statements at January 1, 2013, when adopted.

FASB ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, was issued February 2013 requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail about those amounts. The adoption of the update did not have a material effect on the Company’s financial statements at January 1, 2013, the date adopted. The Company’s only item reclassified out of other comprehensive income to net income is the amortization of unrecognized post retirement benefit transition obligation, which is immaterial for purposes of disclosure.

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Troubled debt restructurings (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Number of Contracts	6	5
Pre-Modification Carrying Value	$ 8,701	$ 6,709
Period-End Carrying Value	8,707	6,678
Period-End Individual Impairment Allowance	786	797
Commercial [Member]
Number of Contracts	3	3
Pre-Modification Carrying Value	1,318	1,318
Period-End Carrying Value	1,172	1,196
Period-End Individual Impairment Allowance	786	797
Commercial Real Estate Loans [Member]
Number of Contracts	3	2
Pre-Modification Carrying Value	7,383	5,391
Period-End Carrying Value	$ 7,535	$ 5,482

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Note 3 - Investment Securities (Detail) - Amortized cost and fair value of securities, by contractual maturity (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Maturity in years:
Securities Available for Sale, Amortized Cost, 1 year or less	$ 79,377	$ 40,380
Securities Available for Sale, Fair Value, 1 year or less	80,036	40,686
Securities Held to Maturity, Amortized Cost, 1 year or less	10,458	10,265
Securities Held to Maturity, Fair Value, 1 year or less	10,733	10,496
Securities Available for Sale, Amortized Cost, Over 1 to 5 years	371,270	309,293
Securities Available for Sale, Fair Value, Over 1 to 5 years	375,009	312,480
Securities Held to Maturity, Amortized Cost, Over 1 to 5 years	166,385	167,162
Securities Held to Maturity, Fair Value, Over 1 to 5 years	170,445	171,769
Securities Available for Sale, Amortized Cost, Over 5 to 10 years	70,880	59,817
Securities Available for Sale, Fair Value, Over 5 to 10 years	74,190	63,540
Securities Held to Maturity, Amortized Cost, Over 5 to 10 years	265,198	227,603
Securities Held to Maturity, Fair Value, Over 5 to 10 years	272,601	236,608
Securities Available for Sale, Amortized Cost, Over 10 years	103,084	110,919
Securities Available for Sale, Fair Value, Over 10 years	111,321	120,467
Securities Held to Maturity, Amortized Cost, Over 10 years	281,220	279,004
Securities Held to Maturity, Fair Value, Over 10 years	284,975	286,973
Securities Available for Sale, Amortized Cost, Subtotal	624,611	520,409
Securities Available for Sale, Fair Value, Subtotal	640,556	537,173
Securities Held to Maturity, Amortized Cost, Subtotal	723,261	684,034
Securities Held to Maturity, Fair Value, Subtotal	738,754	705,846
Securities Available for Sale, Amortized Cost, Mortgage-backed securities and residential collateralized mortgage obligations	317,865	276,767
Securities Available for Sale, Fair Value, Mortgage-backed securities and residential collateralized mortgage obligations	322,713	282,182
Securities Held to Maturity, Amortized Cost, Mortgage-backed securities and residential collateralized mortgage obligations	439,097	472,007
Securities Held to Maturity, Fair Value, Mortgage-backed securities and residential collateralized mortgage obligations	446,887	478,711
Securities Available for Sale, Amortized Cost, Other securities	2,883	2,915
Securities Available for Sale, Fair Value, Other securities	8,907	6,281
Securities Available for Sale, Amortized Cost, Total	945,359	800,091
Securities Available for Sale, Fair Value, Total	972,176	825,636
Securities Held to Maturity, Amortized Cost, Total	1,162,358	1,156,041
Securities Held to Maturity, Fair Value, Total	$ 1,185,641	$ 1,184,557

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Note 3 - Investment Securities (Detail) - Amortized cost, unrealized gains and losses, and fair value - held to maturity investment securities portfolio (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Amortized Cost	$ 1,162,358	$ 1,156,041
Gross Unrealized Gains	26,581	30,322
Gross Unrealized Losses	(3,298)	(1,806)
Fair Value	1,185,641	1,184,557
US Government-sponsored Enterprises Debt Securities [Member]
Amortized Cost	2,747	3,232
Gross Unrealized Gains	28	43
Fair Value	2,775	3,275
Residential Mortgage Backed Securities [Member]
Amortized Cost	68,417	72,807
Gross Unrealized Gains	1,774	2,090
Gross Unrealized Losses	(14)	(10)
Fair Value	70,177	74,887
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	720,514	680,802
Gross Unrealized Gains	18,378	23,004
Gross Unrealized Losses	(2,913)	(1,235)
Fair Value	735,979	702,571
Residential Collateralized Mortgage Obligations [Member]
Amortized Cost	370,680	399,200
Gross Unrealized Gains	6,401	5,185
Gross Unrealized Losses	(371)	(561)
Fair Value	$ 376,710	$ 403,824

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Note 10 - Commitments and Contingent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Unfunded Loan Commitments	$ 328,881	$ 339,651
Financial Standby Letter of Credit [Member]
Letters of Credit Outstanding, Amount	31,783	32,347
Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount	$ 344	$ 344

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Note 5 - Concentration of Credit Risk (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loan Commitments And Standby Letters Of Credit (in Dollars)	$ 67,431	$ 69,345
Commercial Real Estate Loans [Member]
Loan To Value Ratio Requirement	75.00%
Residential Real Estate Loans [Member]
Loan To Value Ratio Requirement	80.00%

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Note 3 - Investment Securities (Detail) - Gross unrealized losses - investments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Available for sale securities, less than 12 months, fair value	$ 166,741	$ 138,539
Available for sale securities, less than 12 months, unrealized losses	(929)	(758)
Available for sale securities, 12 months or longer, fair value	37,007	41,305
Available for sale securities, 12 months or longer, unrealized losses	(714)	(840)
Available for sale securities, total, fair value	203,748	179,844
Available for sale securities, total, unrealized losses	(1,643)	(1,598)
Held to maturity securities, less than 12 months, fair value	163,609	96,635
Held to maturity securities, less than 12 months, unrealized losses	(2,949)	(1,591)
Held to maturity securities, 12 months or longer, fair value	29,432	14,292
Held to maturity securities, 12 months or longer, unrealized losses	(349)	(215)
Held to maturity securities, total, fair value	193,041	110,927
Held to maturity securities, total, unrealized losses	(3,298)	(1,806)
Residential Mortgage Backed Securities [Member]
Held to maturity securities, less than 12 months, fair value	255	113
Held to maturity securities, 12 months or longer, fair value	7,775	664
Held to maturity securities, 12 months or longer, unrealized losses	(14)	(10)
Held to maturity securities, total, fair value	8,030	777
Held to maturity securities, total, unrealized losses	(14)	(10)
US States and Political Subdivisions Debt Securities [Member]
Held to maturity securities, less than 12 months, fair value	153,086	69,839
Held to maturity securities, less than 12 months, unrealized losses	(2,782)	(1,205)
Held to maturity securities, 12 months or longer, fair value	8,887	4,275
Held to maturity securities, 12 months or longer, unrealized losses	(131)	(30)
Held to maturity securities, total, fair value	161,973	74,114
Held to maturity securities, total, unrealized losses	(2,913)	(1,235)
Residential Collateralized Mortgage Obligations [Member]
Held to maturity securities, less than 12 months, fair value	10,268	26,683
Held to maturity securities, less than 12 months, unrealized losses	(167)	(386)
Held to maturity securities, 12 months or longer, fair value	12,770	9,353
Held to maturity securities, 12 months or longer, unrealized losses	(204)	(175)
Held to maturity securities, total, fair value	23,038	36,036
Held to maturity securities, total, unrealized losses	(371)	(561)
US Government-sponsored Enterprises Debt Securities [Member]
Available for sale securities, less than 12 months, fair value	9,990	9,983
Available for sale securities, less than 12 months, unrealized losses	(10)	(17)
Available for sale securities, total, fair value	9,990	9,983
Available for sale securities, total, unrealized losses	(10)	(17)
Residential Mortgage Backed Securities [Member]
Available for sale securities, less than 12 months, fair value	64	103
Available for sale securities, less than 12 months, unrealized losses	(1)	(1)
Available for sale securities, 12 months or longer, fair value	884	11
Available for sale securities, 12 months or longer, unrealized losses	(2)
Available for sale securities, total, fair value	948	114
Available for sale securities, total, unrealized losses	(3)	(1)
US States and Political Subdivisions Debt Securities [Member]
Available for sale securities, less than 12 months, fair value	3,107	2,080
Available for sale securities, less than 12 months, unrealized losses	(23)	(23)
Available for sale securities, 12 months or longer, fair value	9,030	8,928
Available for sale securities, 12 months or longer, unrealized losses	(252)	(229)
Available for sale securities, total, fair value	12,137	11,008
Available for sale securities, total, unrealized losses	(275)	(252)
Residential Collateralized Mortgage Obligations [Member]
Available for sale securities, less than 12 months, fair value	85,377	72,803
Available for sale securities, less than 12 months, unrealized losses	(509)	(294)
Available for sale securities, total, fair value	85,377	72,803
Available for sale securities, total, unrealized losses	(509)	(294)
Asset-backed Securities [Member]
Available for sale securities, 12 months or longer, fair value	5,449	5,828
Available for sale securities, 12 months or longer, unrealized losses	(98)	(143)
Available for sale securities, total, fair value	5,449	5,828
Available for sale securities, total, unrealized losses	(98)	(143)
FHLMC And FNMA Stock [Member]
Available for sale securities, 12 months or longer, fair value	3	1
Available for sale securities, 12 months or longer, unrealized losses	(3)	(5)
Available for sale securities, total, fair value	3	1
Available for sale securities, total, unrealized losses	(3)	(5)
Domestic Corporate Debt Securities [Member]
Available for sale securities, less than 12 months, fair value	68,203	53,570
Available for sale securities, less than 12 months, unrealized losses	(386)	(423)
Available for sale securities, 12 months or longer, fair value	19,713	24,597
Available for sale securities, 12 months or longer, unrealized losses	(287)	(403)
Available for sale securities, total, fair value	87,916	78,167
Available for sale securities, total, unrealized losses	(673)	(826)
Other Securities [Member]
Available for sale securities, 12 months or longer, fair value	1,928	1,940
Available for sale securities, 12 months or longer, unrealized losses	(72)	(60)
Available for sale securities, total, fair value	1,928	1,940
Available for sale securities, total, unrealized losses	$ (72)	$ (60)

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Note 3 - Investment Securities (Detail) - Interest income from investment securities (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Taxable:
Interest income from investment taxable securities	$ 5,535	$ 4,690
Tax-exempt	7,531	7,952
Total interest income from investment securities	13,066	12,642
Mortgage Related Securities [Member]
Taxable:
Interest income from investment taxable securities	3,561	3,364
Other Securities [Member]
Taxable:
Interest income from investment taxable securities	$ 1,974	$ 1,326

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Note 1 - Basis of Presentation

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

Note 1: Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission. The results of operations reflect interim adjustments, all of which are of a normal recurring nature and which, in the opinion of Management, are necessary for a fair presentation of the results for the interim periods presented. The interim results for the three months ended March 31, 2013 and 2012 are not necessarily indicative of the results expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes as well as other information included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012.

The Company has evaluated events and transactions subsequent to the balance sheet date. Based on this evaluation, the Company is not aware of any events or transactions that occurred subsequent to the balance sheet date but prior to filing that would require recognition or disclosure in its unaudited consolidated financial statements.

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Note 4 - Loans and Allowance for Credit Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Modifications, Recorded Investment	$ 8,707		$ 6,678
Impaired Loans Restructured Nonaccrual Status	2,976		988
Troubled Debt Restructurings During Period	1	1
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt	25,743		25,799
Restricted Pledged Loans	28,843		32,084
One Loan [Member]
Financing Receivable, Modifications, Recorded Investment	$ 2,009	429

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Effect of nonaccrual loans on interest income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Interest income that would have been recognized had the loans performed in accordance with their original terms	$ 753	$ 1,064
Less: Interest income recognized on nonaccrual loans	(375)	(842)
Total (addition) reduction of interest income	$ 378	$ 222

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Note 9 - Fair Value Measurements (Detail) - Assets measured at fair value on a recurring basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Investment securities available for sale:
Fair Value	$ 972,176	$ 825,636
Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale:
Fair Value	54,918	57,424
Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale:
Fair Value	$ 917,258	$ 768,212

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Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets:
Cash and due from banks	$ 355,459	$ 491,382
Investment securities available for sale	972,176	825,636
Investment securities held to maturity, with fair values of: $1,185,641 at March 31, 2013 and $1,184,557 at December 31, 2012	1,162,358	1,156,041
Purchased covered loans	353,034	372,283
Purchased non-covered loans	70,504	74,891
Originated loans	1,613,396	1,664,183
Allowance for loan losses	(30,354)	(30,234)
Total loans	2,006,580	2,081,123
Non-covered other real estate owned	9,671	12,661
Covered other real estate owned	13,713	13,691
Premises and equipment, net	38,519	38,639
Identifiable intangibles, net	22,042	23,261
Goodwill	121,673	121,673
Other assets	185,653	188,086
Total Assets	4,887,844	4,952,193
Liabilities:
Noninterest bearing deposits	1,621,887	1,676,071
Interest bearing deposits	2,540,063	2,556,421
Total deposits	4,161,950	4,232,492
Short-term borrowed funds	61,854	53,687
Federal Home Loan Bank advances	25,743	25,799
Term repurchase agreement	10,000	10,000
Debt financing	15,000	15,000
Other liabilities	54,317	55,113
Total Liabilities	4,328,864	4,392,091
Shareholders' Equity:
Common stock (no par value), authorized - 150,000 shares Issued and outstanding: 27,018 at March 31, 2013 and 27,213 at December 31, 2012	373,579	372,012
Deferred compensation	3,101	3,101
Accumulated other comprehensive income	15,372	14,625
Retained earnings	166,928	170,364
Total Shareholders' Equity	558,980	560,102
Total Liabilities and Shareholders' Equity	$ 4,887,844	$ 4,952,193

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Note 6 - Other Assets (Detail)	3 Months Ended
	Mar. 31, 2013
FRB Membership, Stock Subscription, Percent of Paid-Up Capital Stock and Surplus Requirement	six percent
FHLB Borrowings, Minimum Activity-Based Requirement Percentage of Oustanding Advances	4.70%

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Consolidated Statements of Changes in Shareholders’ Equity (unaudited) (USD $) In Thousands	Common Stock [Member]	Accumulated Deferred Compensation [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Beginning balance at Dec. 31, 2011	$ 377,775	$ 3,060	$ 11,369	$ 166,437	$ 558,641
Beginning balance (in Shares) at Dec. 31, 2011	28,150
Net income for the period				21,005	21,005
Other comprehensive income			811		811
Exercise of stock options	641				641
Exercise of stock options (in Shares)	15
Tax benefit increase (decrease) upon exercise of stock options	4				4
Restricted stock activity	220	(220)
Stock based compensation	435				435
Stock awarded to employees	45				45
Stock awarded to employees (in Shares)	1
Purchase and retirement of stock	(3,370)			(8,290)	(11,660)
Purchase and retirement of stock (in Shares)	(249)
Dividends				(10,394)	(10,394)
Ending balance at Mar. 31, 2012	375,750	2,840	12,180	168,758	559,528
Ending balance (in Shares) at Mar. 31, 2012	27,917
Beginning balance at Dec. 31, 2012	372,012	3,101	14,625	170,364	560,102
Beginning balance (in Shares) at Dec. 31, 2012	27,213
Net income for the period				17,271	17,271
Other comprehensive income			747		747
Exercise of stock options	6,156				6,156
Exercise of stock options (in Shares)	151
Tax benefit increase (decrease) upon exercise of stock options	(191)				(191)
Stock based compensation	379				379
Stock awarded to employees	42				42
Stock awarded to employees (in Shares)	1
Purchase and retirement of stock	(4,819)			(10,623)	(15,442)
Purchase and retirement of stock (in Shares)	(347)
Dividends				(10,084)	(10,084)
Ending balance at Mar. 31, 2013	$ 373,579	$ 3,101	$ 15,372	$ 166,928	$ 558,980
Ending balance (in Shares) at Mar. 31, 2013	27,018

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Changes in the accretable yield for purchased loans (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Balance at the beginning of the period	$ 4,948	$ 9,990
Reclassification from nonaccretable difference	8,154	12,121
Accretion	(3,641)	(17,163)
Reduction in FDIC indemnification asset	2,782	13,207
(Increase) in interest income	(859)	(3,956)
Balance at the end of the period	$ 9,461	$ 4,948

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Note 7 - Goodwill and Identifiable Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Goodwill [Table Text Block]

March 31, 2013	$	121,673
December 31, 2012	$	121,673

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	At March 31, 2013					At December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Core Deposit Intangibles	$	56,808	$	(36,045	)	$	56,808	$	(34,938	)
Merchant Draft Processing Intangible		10,300		(9,021	)		10,300		(8,909	)
Total Identifiable Intangible Assets	$	67,108	$	(45,066	)	$	67,108	$	(43,847	)

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	Core Deposit Intangibles		Merchant Draft Processing Intangible		Total
	(In thousands)
Three months ended March 31, 2013 (actual)	$	1,107	$	112	$	1,219
Estimate for year ended December 31, 2013		4,304		400		4,704
2014		3,946		324		4,270
2015		3,594		262		3,856
2016		3,292		212		3,504
2017		2,913		164		3,077
2018		1,892		29		1,921

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Allowance for Credit Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Sep. 30, 2012
Allowance for loan losses:
Balance at beginning of period	$ 30,234	$ 32,597		$ 30,354
Additions:
Provision	2,800	2,800
Deductions:
Chargeoffs	(3,769)	(4,698)
Recoveries	1,089	1,184
Net loan losses	(2,680)	(3,514)
Balance at end of period	30,354	31,883		30,354
Liability for off-balance sheet credit exposure	2,693	2,693
Total allowance for credit losses	33,047	34,576	32,927
Commercial [Member]
Allowance for loan losses:
Balance at beginning of period	6,445	6,012
Additions:
Provision	531	1,275
Deductions:
Chargeoffs	(1,902)	(862)
Recoveries	462	389
Net loan losses	(1,440)	(473)
Balance at end of period	5,536	6,814
Liability for off-balance sheet credit exposure	1,663	1,643
Total allowance for credit losses	7,199	8,457	8,179
Commercial Real Estate Loans [Member]
Allowance for loan losses:
Balance at beginning of period	10,063	10,611
Additions:
Provision	994	1,764
Deductions:
Chargeoffs	(113)	(948)
Recoveries	21
Net loan losses	(92)	(948)
Balance at end of period	10,965	11,427
Liability for off-balance sheet credit exposure	3
Total allowance for credit losses	10,968	11,427	10,072
Construction [Member]
Allowance for loan losses:
Balance at beginning of period	484	2,342
Additions:
Provision	(4)	411
Deductions:
Recoveries		2
Net loan losses		2
Balance at end of period	480	2,755
Liability for off-balance sheet credit exposure		26
Total allowance for credit losses	480	2,781	484
Residential Real Estate Loans [Member]
Allowance for loan losses:
Balance at beginning of period	380	781
Additions:
Provision	246	734
Deductions:
Chargeoffs	(87)	(870)
Net loan losses	(87)	(870)
Balance at end of period	539	645
Total allowance for credit losses	539	645	380
Consumer Installment And Other [Member]
Allowance for loan losses:
Balance at beginning of period	3,194	3,072
Additions:
Provision	281	627
Deductions:
Chargeoffs	(1,308)	(1,653)
Recoveries	601	779
Net loan losses	(707)	(874)
Balance at end of period	2,768	2,825
Liability for off-balance sheet credit exposure	453	189
Total allowance for credit losses	3,221	3,014	3,613
Purchased Covered Loans [Member]
Allowance for loan losses:
Balance at beginning of period	1,005
Additions:
Provision	87	490
Deductions:
Chargeoffs	(359)	(365)
Recoveries	5	14
Net loan losses	(354)	(351)
Balance at end of period	738	139
Total allowance for credit losses	738	139	1,005
Unallocated Financing Receivable [Member]
Allowance for loan losses:
Balance at beginning of period	8,663	9,779
Additions:
Provision	665	(2,501)
Deductions:
Balance at end of period	9,328	7,278
Liability for off-balance sheet credit exposure	574	835
Total allowance for credit losses	$ 9,902	$ 8,113	$ 9,194

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Note 9 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other  Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
	(In thousands)
Investment securities available for sale:
At March 31, 2013	$	972,176	$	54,918	$	917,258	$	-
At December 31, 2012	$	825,636	$	57,424	$	768,212	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

	At March 31, 2013
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	5,869	$	-	$	5,869	$	-	$	(446	)
Covered other real estate owned		8,055		-		8,055		-		(146	)
Originated impaired loans		3,618		-		2,628		990		(1,676	)
Purchased covered impaired loans		4,660		-		200		4,460		-
Total assets measured at fair value on a nonrecurring basis	$	22,202	$	-	$	16,752	$	5,450	$	(2,268	)

	At December 31, 2012
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	6,618	$	-	$	6,618	$	-	$	(1,360	)
Covered other real estate owned		7,929		-		7,929		-		(371	)
Originated impaired loans		5,197		-		3,097		2,100		(3,158	)
Purchased covered impaired loans		6,684		-		2,224		4,460		(83	)
Total assets measured at fair value on a nonrecurring basis	$	26,428	$	-	$	19,868	$	6,560	$	(4,972	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

	At March 31, 2013
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	355,459	$	355,459	$	355,459	$	-	$	-
Investment securities held to maturity		1,162,358		1,185,641		2,775		1,182,866		-
Loans		2,006,580		2,014,826		-		-		2,014,826
Other assets - FDIC receivable		12,162		12,155		-		-		12,155
Financial Liabilities:
Deposits	$	4,161,950	$	4,161,713	$	-	$	3,554,131	$	607,582
Short-term borrowed funds		61,854		61,854		-		61,854		-
Federal Home Loan Bank advances		25,743		26,014		26,014		-		-
Term repurchase agreement		10,000		10,114		-		10,114		-
Debt financing		15,000		15,365		-		15,365		-

	At December 31, 2012
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	491,382	$	491,382	$	491,382	$	-	$	-
Investment securities held to maturity		1,156,041		1,184,557		3,275		1,181,282		-
Loans		2,081,123		2,090,712		-		-		2,090,712
Other assets - FDIC receivable		13,847		13,834		-		-		13,834
Financial Liabilities:
Deposits	$	4,232,492	$	4,232,239	$	-	$	3,589,921	$	642,318
Short-term borrowed funds		53,687		53,687		-		53,687		-
Federal Home Loan Bank advances		25,799		26,150		26,150		-		-
Term repurchase agreement		10,000		10,135		-		10,135		-
Debt financing		15,000		15,645		-		15,645		-

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Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income	$ 17,271	$ 21,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,322	3,499
Loan loss provision	2,800	2,800
Net amortization of deferred loan fees	(80)	(126)
(Increase) decrease in interest income receivable	(199)	733
(Increase) decrease in deferred tax asset	(673)	183
Increase in other assets	(663)	(4,655)
Stock option compensation expense	379	435
Tax benefit decrease (increase) upon exercise of stock options	191	(4)
Increase in income taxes payable	5,482	7,386
Increase in interest expense payable	252	149
(Decrease) increase in other liabilities	(6,726)	1,771
Gain on sale of other assets	(274)	(150)
Loss on sale of premises and equipment	6
Originations of mortgage loans for resale	(90)
Proceeds from sale of mortgage loans originated for resale	92
Net gain on sale of foreclosed assets	(181)	(1,779)
Writedown of foreclosed assets	592	1,712
Net Cash Provided by Operating Activities	22,501	32,959
Investing Activities:
Net repayments of loans	72,880	95,748
Proceeds from FDIC* loss-sharing agreement	1,344	2,628
Purchases of investment securities available for sale	(175,901)	(25,418)
Proceeds from sale/maturity/calls of securities available for sale	30,166	31,317
Purchases of investment securities held to maturity	(59,677)	(151,958)
Proceeds from maturity/calls of securities held to maturity	51,876	48,123
Purchases of premises and equipment	(617)	(1,940)
Proceeds from sale of FRB/FHLB** stock	738	451
Proceeds from sale of foreclosed assets	2,611	10,277
Net Cash (Used in) Provided by Investing Activities	(76,580)	9,228
Financing Activities:
Net change in deposits	(70,450)	(716)
Net change in short-term borrowings	8,167	(9,005)
Exercise of stock options/issuance of shares	6,156	641
Tax benefit (decrease) increase upon exercise of stock options	(191)	4
Retirement of common stock including repurchases	(15,442)	(11,660)
Common stock dividends paid	(10,084)	(10,394)
Net Cash Used in Financing Activities	(81,844)	(31,130)
Net Change In Cash and Due from Banks	(135,923)	11,057
Cash and Due from Banks at Beginning of Period	491,382	530,045
Cash and Due from Banks at End of Period	355,459	541,102
Supplemental disclosure of noncash activities:
Loan collateral transferred to other real estate owned	640	1,583
Supplemental disclosure of cash flow activities:
Interest paid for the period	1,132	1,642
Income tax payments for the period	$ 126

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Consolidated Balance Sheets (unaudited) (Parentheticals) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Investment securities held to maturity, fair value (in Dollars)	$ 1,185,641	$ 1,184,557
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	27,018	27,213
Common stock, shares outstanding	27,018	27,213

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Note 10 - Commitments and Contingent Liabilities

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Text Block]

Note 10: Commitments and Contingent Liabilities

Loan commitments are agreements to lend to a customer provided there is no violation of any condition established in the agreement. Commitments generally have fixed expiration dates or other termination clauses. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements. Loan commitments are subject to the Company’s normal credit policies and collateral requirements. Unfunded loan commitments were $328,881 thousand and $339,651 thousand at March 31, 2013 and December 31, 2012, respectively. Standby letters of credit commit the Company to make payments on behalf of customers when certain specified future events occur. Standby letters of credit are primarily issued to support customers’ short-term financing requirements and must meet the Company’s normal credit policies and collateral requirements. Standby letters of credit outstanding totaled $31,783 thousand and $32,347 thousand at March 31, 2013 and December 31, 2012, respectively. The Company also had commitments for commercial and similar letters of credit of $344 thousand and $344 thousand at March 31, 2013 and December 31, 2012, respectively.

Due to the nature of its business, the Company is subject to various threatened or filed legal cases. Based on the advice of legal counsel, the Company does not expect such cases will have a material, adverse effect on its financial position or results of operations. Legal liabilities are accrued when obligations become probable and the amount is reasonably estimable. Legal costs related to covered assets are eighty percent indemnified under loss-sharing agreements with the FDIC if certain conditions are met.

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Document And Entity Information	3 Months Ended
	Mar. 31, 2013	Apr. 23, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	WESTAMERICA BANCORPORATION
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		26,980,635
Amendment Flag	false
Entity Central Index Key	0000311094
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1

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Note 11 - Earnings Per Common Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Text Block]

Note 11: Earnings Per Common Share

The table below shows earnings per common share and diluted earnings per common share. Basic earnings per common share are computed by dividing net income applicable to common equity by the average number of common shares outstanding during the period. Diluted earnings per common share are computed by dividing net income applicable to common equity by the average number of common shares outstanding during the period plus the impact of common stock equivalents.

	For the Three Months Ended March 31,
	2013		2012
	(In thousands, except per share data)
Net income applicable to common equity (numerator)	$	17,271	$	21,005
Basic earnings per common share
Weighted average number of common shares outstanding - basic (denominator)		27,145		28,051
Basic earnings per common share	$	0.64	$	0.75
Diluted earnings per common share
Weighted average number of common shares outstanding - basic		27,145		28,051
Add exercise of options reduced by the number of shares that could have been purchased with the proceeds of such exercise		12		60
Weighted average number of common shares outstanding - diluted (denominator)		27,157		28,111
Diluted earnings per common share	$	0.64	$	0.75

For the three months ended March 31, 2013 and 2012, options to purchase 2,317 thousand and 1,998 thousand shares of common stock, respectively, were outstanding but not included in the computation of diluted net income per share because the option exercise price exceeded the fair value of the stock such that their inclusion would have had an anti-dilutive effect.

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Consolidated Statements of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Interest and Fee Income:
Loans	$ 27,399	$ 35,656
Investment securities available for sale	5,336	4,788
Investment securities held to maturity	7,730	7,854
Total Interest and Fee Income	40,465	48,298
Interest Expense:
Deposits	899	1,187
Short-term borrowed funds	11	27
Term repurchase agreement	24	25
Federal Home Loan Bank advances	118	120
Debt financing	200	200
Total Interest Expense	1,252	1,559
Net Interest Income	39,213	46,739
Provision for Loan Losses	2,800	2,800
Net Interest Income After Provision For Loan Losses	36,413	43,939
Noninterest Income:
Service charges on deposit accounts	6,542	7,095
Merchant processing services	2,409	2,393
Debit card fees	1,358	1,163
ATM processing fees	705	933
Trust fees	568	489
Financial services commissions	180	171
Other	2,516	2,425
Total Noninterest Income	14,278	14,669
Noninterest Expense:
Salaries and related benefits	14,403	15,046
Occupancy	3,886	3,934
Outsourced data processing services	2,157	2,083
Amortization of identifiable intangibles	1,219	1,402
Furniture and equipment	880	851
Courier service	741	785
Professional fees	635	767
Other real estate owned	334	230
Other	4,422	4,936
Total Noninterest Expense	28,677	30,034
Income Before Income Taxes	22,014	28,574
Provision for income taxes	4,743	7,569
Net Income	$ 17,271	$ 21,005
Average Common Shares Outstanding (in Shares)	27,145	28,051
Diluted Average Common Shares Outstanding (in Shares)	27,157	28,111
Per Common Share Data:
Basic earnings (in Dollars per share)	$ 0.64	$ 0.75
Diluted earnings (in Dollars per share)	$ 0.64	$ 0.75
Dividends paid (in Dollars per share)	$ 0.37	$ 0.37

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Note 5 - Concentration of Credit Risk

3 Months Ended

Mar. 31, 2013

Concentration Risk Disclosure [Text Block]

Note 5: Concentration of Credit Risk

The Company’s business activity is with customers in Northern and Central California. The loan portfolio is well diversified within the Company’s geographic market, although the Company has significant credit arrangements that are secured by real estate collateral. In addition to real estate loans outstanding as disclosed in Note 4, the Company had loan commitments and standby letters of credit related to real estate loans of $67,431 thousand and $69,345 thousand at March 31, 2013 and December 31, 2012, respectively. The Company requires collateral on all real estate loans with loan-to-value ratios at origination generally no greater than 75% on commercial real estate loans and no greater than 80% on residential real estate loans at origination.

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Note 4 - Loans and Allowance for Credit Losses

3 Months Ended

Mar. 31, 2013

Loans And Allowance For Credit Losses [Text Block]

Note 4: Loans and Allowance for Credit Losses

A summary of the major categories of loans outstanding is shown in the following table.

	At March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	318,502		$	625,185		$	7,920		$	213,919		$	447,870		$	1,613,396
Purchased covered loans:
Impaired		293			6,899			1,737			-			255			9,184
Non impaired		57,589			232,854			4,942			8,816			62,309			366,510
Purchase discount		(6,958	)		(13,600	)		(188	)		(434	)		(1,480	)		(22,660	)
Purchased non-covered loans:
Impaired		1,244			6,111			-			-			297			7,652
Non impaired		9,367			37,548			1,369			2,205			16,949			67,438
Purchase discount		(913	)		(1,750	)		(95	)		(262	)		(1,566	)		(4,586	)
Total	$	379,124		$	893,247		$	15,685		$	224,244		$	524,634		$	2,036,934

	At December 31, 2012
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	340,116		$	632,927		$	7,984		$	222,458		$	460,698		$	1,664,183
Purchased covered loans:
Impaired		308			7,585			1,824			-			257			9,974
Non impaired		59,135			247,534			5,462			9,374			66,932			388,437
Purchase discount		(8,459	)		(15,140	)		(279	)		(433	)		(1,817	)		(26,128	)
Purchased non-covered loans:
Impaired		1,261			6,763			-			-			297			8,321
Non impaired		9,840			38,673			1,619			3,110			18,554			71,796
Purchase discount		(870	)		(1,748	)		(95	)		(474	)		(2,039	)		(5,226	)
Total	$	401,331		$	916,594		$	16,515		$	234,035		$	542,882		$	2,111,357

Changes in the carrying amount of impaired purchased covered loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased covered loans	(In thousands)
Carrying amount at the beginning of the period	$	7,865		$	18,591
Reductions during the period		(284	)		(10,726	)
Carrying amount at the end of the period	$	7,581		$	7,865

Changes in the carrying amount of impaired purchased non-covered loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased non-covered loans	(In thousands)
Carrying amount at the beginning of the period	$	6,764		$	15,572
Reductions during the period		(804	)		(8,808	)
Carrying amount at the end of the period	$	5,960		$	6,764

Changes in the accretable yield for purchased loans were as follows:

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Accretable yield:	(In thousands)
Balance at the beginning of the period	$	4,948		$	9,990
Reclassification from nonaccretable difference		8,154			12,121
Accretion		(3,641	)		(17,163	)
Disposals and other		-			-
Balance at the end of the period	$	9,461		$	4,948
Accretion	$	(3,641	)	$	(17,163	)
Reduction in FDIC indemnification asset		2,782			13,207
(Increase) in interest income	$	(859	)	$	(3,956	)

The following summarizes activity in the allowance for credit losses:

	Allowance for Credit Losses For the Three Months Ended March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment and Other			Purchased Non-covered Loans		Purchased Covered Loans			Unallocated		Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,445		$	10,063		$	484		$	380		$	3,194		$	-	$	1,005		$	8,663	$	30,234
Additions:
Provision		531			994			(4	)		246			281			-		87			665		2,800
Deductions:
Chargeoffs		(1,902	)		(113	)		-			(87	)		(1,308	)		-		(359	)		-		(3,769	)
Recoveries		462			21			-			-			601			-		5			-		1,089
Net loan losses		(1,440	)		(92	)		-			(87	)		(707	)		-		(354	)		-		(2,680	)
Balance at end of period		5,536			10,965			480			539			2,768			-		738			9,328		30,354
Liability for off-balance sheet credit exposure		1,663			3			-			-			453			-		-			574		2,693
Total allowance for credit losses	$	7,199		$	10,968		$	480		$	539		$	3,221		$	-	$	738		$	9,902	$	33,047

	Allowance for Credit Losses For the Three Months Ended March 31, 2012
	Commercial			Commercial Real Estate			Construction		Residential Real Estate			Consumer Installment and Other			Purchased Covered Loans			Unallocated			Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,012		$	10,611		$	2,342	$	781		$	3,072		$	-		$	9,779		$	32,597
Additions:
Provision		1,275			1,764			411		734			627			490			(2,501	)		2,800
Deductions:
Chargeoffs		(862	)		(948	)		-		(870	)		(1,653	)		(365	)		-			(4,698	)
Recoveries		389			-			2		-			779			14			-			1,184
Net loan losses		(473	)		(948	)		2		(870	)		(874	)		(351	)		-			(3,514	)
Balance at end of period		6,814			11,427			2,755		645			2,825			139			7,278			31,883
Liability for off-balance sheet credit exposure		1,643			-			26		-			189			-			835			2,693
Total allowance for credit losses	$	8,457		$	11,427		$	2,781	$	645		$	3,014		$	139		$	8,113		$	34,576

The recorded investment in loans evaluated for impairment follows:

	Recorded Investment in Loans Evaluated for Impairment At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	886	$	584	$	-	$	-	$	-	$	-	$	723	$	-	$	2,193
Collectively evaluated for impairment		6,313		10,384		480		539		3,221		-		15		9,902		30,854
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	7,199	$	10,968	$	480	$	539	$	3,221	$	-	$	738	$	9,902	$	33,047
Carrying value of loans:
Individually evaluated for impairment	$	2,171	$	3,319	$	-	$	-	$	-	$	5,196	$	16,086	$	-	$	26,772
Collectively evaluated for impairment		316,331		621,866		7,920		213,919		447,870		59,348		329,367		-		1,996,621
Purchased loans with evidence of credit deterioration		-		-		-		-		-		5,960		7,581		-		13,541
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504	$	353,034	$	-	$	2,036,934

	Recorded Investment in Loans Evaluated for Impairment At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	1,865	$	134	$	-	$	-	$	-	$	-	$	753	$	-	$	2,752
Collectively evaluated for impairment		6,314		9,938		484		380		3,613		-		252		9,194		30,175
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	8,179	$	10,072	$	484	$	380	$	3,613	$	-	$	1,005	$	9,194	$	32,927
Carrying value of loans:
Individually evaluated for impairment	$	5,153	$	4,161	$	-	$	-	$	-	$	3,029	$	16,680	$	-	$	29,023
Collectively evaluated for impairment		334,963		628,766		7,984		222,458		460,698		65,098		347,738		-		2,067,705
Purchased loans with evidence of credit deterioration		-		-		-		-		-		6,764		7,865		-		14,629
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891	$	372,283	$	-	$	2,111,357

The Bank’s customers are small businesses, professionals and consumers. Given the scale of these borrowers, corporate credit rating agencies do not evaluate the borrowers’ financial condition. The Bank maintains a Loan Review Department which reports directly to the Board of Directors. The Loan Review Department performs independent evaluations of loans and assigns credit risk grades to evaluated loans using grading standards employed by bank regulatory agencies. Loans judged to carry lower-risk attributes are assigned a “pass” grade, with a minimal likelihood of loss. Loans judged to carry higher-risk attributes are referred to as “classified loans,” and are further disaggregated, with increasing expectations for loss recognition, as “substandard,” “doubtful,” and “loss.” Loan Review evaluations occur every calendar quarter.  If the Bank becomes aware of deterioration in a borrower’s performance or financial condition between Loan Review examinations, assigned risk grades will be re-evaluated promptly. Credit risk grades assigned by the Loan Review Department are subject to review by the Bank’s regulatory authority during regulatory examinations.

The following summarizes the credit risk profile by internally assigned grade:

	Credit Risk Profile by Internally Assigned Grade At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans			Purchased Covered Loans (1)			Total
	(In thousands)
Grade:
Pass	$	305,285	$	590,834	$	7,457	$	211,445	$	446,365	$	48,379		$	253,854		$	1,863,619
Substandard		10,798		34,351		463		2,474		1,224		25,172			121,300			195,782
Doubtful		2,419		-		-		-		31		1,539			455			4,444
Loss		-		-		-		-		250		-			85			335
Default risk purchase discount		-		-		-		-		-		(4,586	)		(22,660	)		(27,246	)
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504		$	353,034		$	2,036,934

(1) Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

	Credit Risk Profile by Internally Assigned Grade At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real  Estate		Consumer  Installment and Other		Purchased Non- covered Loans			Purchased  Covered  Loans (1)			Total
	(In thousands)
Grade:
Pass	$	324,452	$	599,472	$	7,518	$	219,655	$	459,076	$	51,901		$	274,976		$	1,937,050
Substandard		11,413		33,455		466		2,803		1,158		27,066			122,815			199,176
Doubtful		4,251		-		-		-		46		1,145			470			5,912
Loss		-		-		-		-		418		5			150			573
Default risk purchase discount		-		-		-		-		-		(5,226	)		(26,128	)		(31,354	)
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891		$	372,283		$	2,111,357

(1) Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

The following tables summarize loans by delinquency and nonaccrual status:

	Summary of Loans by Delinquency and Nonaccrual Status At March 31, 2013
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	313,381	$	2,493	$	-	$	2,628	$	318,502
Commercial real estate		613,517		6,427		-		5,241		625,185
Construction		7,920		-		-		-		7,920
Residential real estate		213,353		333		-		233		213,919
Consumer installment & other		444,284		3,224		305		57		447,870
Total originated loans		1,592,455		12,477		305		8,159		1,613,396
Purchased non-covered loans		60,242		1,150		-		9,112		70,504
Purchased covered loans		330,958		10,111		88		11,877		353,034
Total	$	1,983,655	$	23,738	$	393	$	29,148	$	2,036,934

	Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2012
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	333,474	$	1,032	$	-	$	5,610	$	340,116
Commercial real estate		616,276		10,750		-		5,901		632,927
Construction		7,984		-		-		-		7,984
Residential real estate		220,032		2,193		-		233		222,458
Consumer installment & other		455,007		5,205		455		31		460,698
Total originated loans		1,632,773		19,180		455		11,775		1,664,183
Purchased non-covered loans		65,567		1,821		4		7,499		74,891
Purchased covered loans		352,619		6,488		155		13,021		372,283
Total	$	2,050,959	$	27,489	$	614	$	32,295	$	2,111,357

The following is a summary of the effect of nonaccrual loans on interest income:

	For the Three Months Ended March 31,
	2013			2012
	(In thousands)
Interest income that would have been recognized had the loans performed in accordance with their original terms	$	753		$	1,064
Less: Interest income recognized on nonaccrual loans		(375	)		(842	)
Total (addition) reduction of interest income	$	378		$	222

There were no commitments to lend additional funds to borrowers whose loans were on nonaccrual status at March 31, 2013 and December 31, 2012.

The following summarizes impaired loans:

	Impaired Loans At March 31, 2013
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	2,277	$	8,187	$	-
Commercial real estate		26,155		30,081		-
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-
Impaired loans with an allowance recorded:
Commercial		9,952		11,582		1,609
Commercial real estate		2,686		2,686		584
Total:
Commercial	$	12,229	$	19,769	$	1,609
Commercial real estate		28,841		32,767		584
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-

	Impaired Loans At December 31, 2012
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	3,100	$	9,506	$	-
Commercial real estate		24,135		27,972		-
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-
Impaired loans with an allowance recorded:
Commercial		12,129		13,739		2,588
Commercial real estate		4,038		4,038		164
Total:
Commercial	$	15,229	$	23,245	$	2,588
Commercial real estate		28,173		32,010		164
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-

Impaired loans may include troubled debt restructured loans. Impaired loans at March 31, 2013, included $8,707 thousand of restructured loans, including $2,976 thousand that were on nonaccrual status. Impaired loans at December 31, 2012, included $6,678 thousand of restructured loans, including $988 thousand that were on nonaccrual status.

	Impaired Loans For the Three Months Ended March 31,
	2013				2012
	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
	(In thousands)
Commercial	$	13,729	$	54	$	6,576	$	50
Commercial real estate		28,507		300		32,119		378
Construction		2,111		26		6,461		100
Residential real estate		685		-		311		-
Consumer installment and other		1,963		7		2,894		18
Total	$	46,995	$	387	$	48,361	$	546

The following table provides information on troubled debt restructurings:

	Troubled Debt Restructurings At March 31, 2013
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,172	$	786
Commercial real estate		3		7,383		7,535		-
Total		6	$	8,701	$	8,707	$	786

	Troubled Debt Restructurings At December 31, 2012
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,196	$	797
Commercial real estate		2		5,391		5,482		-
Total		5	$	6,709	$	6,678	$	797

During the three months ended March 31, 2013 and 2012, the Company modified one loan in each period with carrying values of $2,009 thousand and $429 thousand, respectively that was considered a troubled debt restructuring. The concession granted in the restructuring completed in the first quarter 2013 consisted of modification of payment terms to lower the interest rate and extend the maturity date to allow for deferred principal repayment. The concession granted in the first quarter 2012 consisted of modification of payment terms to extend the maturity date to allow for deferred principal repayment. During the three months ended March 31, 2013 and 2012, no troubled debt restructured loans defaulted.

The Company pledges loans to secure borrowings from the Federal Home Loan Bank (“FHLB”). The carrying value of the FHLB advances was $25,743 thousand and $25,799 thousand at March 31, 2013 and December 31, 2012, respectively. The loans restricted due to collateral requirements approximate $28,843 thousand and $32,084 thousand at March 31, 2013 and December 31, 2012, respectively. The amount of loans pledged exceeds collateral requirements. The FHLB does not have the right to sell or repledge such loans.

There were no loans held for sale at March 31, 2013 and December 31, 2012.

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Note 8 - Deposits and Borrowed Funds (Tables)

3 Months Ended

Mar. 31, 2013

Deposits Table [Text Block]

	Deposits
	At March 31, 2013		At December 31, 2012
	(In thousands)
Noninterest-bearing	$	1,621,887	$	1,676,071
Interest-bearing:
Transaction		771,268		748,818
Savings		1,160,976		1,165,032
Time		607,819		642,571
Total deposits	$	4,161,950	$	4,232,492

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Note 3 - Investment Securities (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Investment Securities Available for Sale At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,516	$	31	$	-		$	3,547
Securities of U.S. Government sponsored entities		44,236		166		(10	)		44,392
Residential mortgage-backed securities		45,756		3,157		(3	)		48,910
Commercial mortgage-backed securities		3,827		63		-			3,890
Obligations of States and political subdivisions		195,326		13,040		(275	)		208,091
Residential collateralized mortgage obligations		268,282		2,140		(509	)		269,913
Asset-backed securities		15,686		25		(98	)		15,613
FHLMC and FNMA stock		825		4,872		(3	)		5,694
Corporate securities		365,847		3,739		(673	)		368,913
Other securities		2,058		1,227		(72	)		3,213
Total	$	945,359	$	28,460	$	(1,643	)	$	972,176

	Investment Securities Available for Sale At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,520	$	38	$	-		$	3,558
Securities of U.S. Government sponsored entities		49,335		207		(17	)		49,525
Residential mortgage-backed securities		53,078		3,855		(1	)		56,932
Commercial mortgage-backed securities		4,076		69		-			4,145
Obligations of States and political subdivisions		200,769		14,730		(252	)		215,247
Residential collateralized mortgage obligations		219,613		1,786		(294	)		221,105
Asset-backed securities		16,130		18		(143	)		16,005
FHLMC and FNMA stock		824		2,061		(5	)		2,880
Corporate securities		250,655		3,009		(826	)		252,838
Other securities		2,091		1,370		(60	)		3,401
Total	$	800,091	$	27,143	$	(1,598	)	$	825,636

Schedule Of Held To Maturity Securities Reconciliation [Table Text Block]

	Investment Securities Held to Maturity At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	2,747	$	28	$	-		$	2,775
Residential mortgage-backed securities		68,417		1,774		(14	)		70,177
Obligations of States and political subdivisions		720,514		18,378		(2,913	)		735,979
Residential collateralized mortgage obligations		370,680		6,401		(371	)		376,710
Total	$	1,162,358	$	26,581	$	(3,298	)	$	1,185,641

	Investment Securities Held to Maturity At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	3,232	$	43	$	-		$	3,275
Residential mortgage-backed securities		72,807		2,090		(10	)		74,887
Obligations of States and political subdivisions		680,802		23,004		(1,235	)		702,571
Residential collateralized mortgage obligations		399,200		5,185		(561	)		403,824
Total	$	1,156,041	$	30,322	$	(1,806	)	$	1,184,557

Investments Classified by Contractual Maturity Date [Table Text Block]

	At March 31, 2013
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	79,377	$	80,036	$	10,458	$	10,733
Over 1 to 5 years		371,270		375,009		166,385		170,445
Over 5 to 10 years		70,880		74,190		265,198		272,601
Over 10 years		103,084		111,321		281,220		284,975
Subtotal		624,611		640,556		723,261		738,754
Mortgage-backed securities and residential collateralized mortgage obligations		317,865		322,713		439,097		446,887
Other securities		2,883		8,907		-		-
Total	$	945,359	$	972,176	$	1,162,358	$	1,185,641

	At December 31, 2012
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	40,380	$	40,686	$	10,265	$	10,496
Over 1 to 5 years		309,293		312,480		167,162		171,769
Over 5 to 10 years		59,817		63,540		227,603		236,608
Over 10 years		110,919		120,467		279,004		286,973
Subtotal		520,409		537,173		684,034		705,846
Mortgage-backed securities and residential collateralized mortgage obligations		276,767		282,182		472,007		478,711
Other securities		2,915		6,281		-		-
Total	$	800,091	$	825,636	$	1,156,041	$	1,184,557

Schedule of Unrealized Loss on Investments [Table Text Block]

	Investment Securities Available for Sale At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,990	$	(10	)	$	-	$	-		$	9,990	$	(10	)
Residential mortgage-backed securities		64		(1	)		884		(2	)		948		(3	)
Obligations of States and political subdivisions		3,107		(23	)		9,030		(252	)		12,137		(275	)
Residential collateralized mortgage obligations		85,377		(509	)		-		-			85,377		(509	)
Asset-backed securities		-		-			5,449		(98	)		5,449		(98	)
FHLMC and FNMA stock		-		-			3		(3	)		3		(3	)
Corporate securities		68,203		(386	)		19,713		(287	)		87,916		(673	)
Other securities		-		-			1,928		(72	)		1,928		(72	)
Total	$	166,741	$	(929	)	$	37,007	$	(714	)	$	203,748	$	(1,643	)

	Investment Securities Held to Maturity At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	255	$	-		$	7,775	$	(14	)	$	8,030	$	(14	)
Obligations of States and political subdivisions		153,086		(2,782	)		8,887		(131	)		161,973		(2,913	)
Residential collateralized mortgage obligations		10,268		(167	)		12,770		(204	)		23,038		(371	)
Total	$	163,609	$	(2,949	)	$	29,432	$	(349	)	$	193,041	$	(3,298	)

	Investment Securities Available for Sale At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,983	$	(17	)	$	-	$	-		$	9,983	$	(17	)
Residential mortgage-backed securities		103		(1	)		11		-			114		(1	)
Residential collateralized mortgage obligations		72,803		(294	)		-		-			72,803		(294	)
Obligations of States and political subdivisions		2,080		(23	)		8,928		(229	)		11,008		(252	)
Asset-backed securities		-		-			5,828		(143	)		5,828		(143	)
FHLMC and FNMA stock		-		-			1		(5	)		1		(5	)
Corporate securities		53,570		(423	)		24,597		(403	)		78,167		(826	)
Other securities		-		-			1,940		(60	)		1,940		(60	)
Total	$	138,539	$	(758	)	$	41,305	$	(840	)	$	179,844	$	(1,598	)

	Investment Securities Held to Maturity At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	113	$	-		$	664	$	(10	)	$	777	$	(10	)
Residential collateralized mortgage obligations		26,683		(386	)		9,353		(175	)		36,036		(561	)
Obligations of States and political subdivisions		69,839		(1,205	)		4,275		(30	)		74,114		(1,235	)
Total	$	96,635	$	(1,591	)	$	14,292	$	(215	)	$	110,927	$	(1,806	)

Interest Income From Investments [Table Text Block]

	For the Three Months Ended March 31,
	2013		2012
	(In thousands)
Taxable:
Mortgage related securities	$	3,561	$	3,364
Other		1,974		1,326
Total taxable		5,535		4,690
Tax-exempt		7,531		7,952
Total interest income from investment securities	$	13,066	$	12,642

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Note 8 - Deposits and Borrowed Funds

3 Months Ended

Mar. 31, 2013

Deposits And Borrowed Funds [Text Block]

Note 8: Deposits and Borrowed Funds

Deposits totaled $4,161,950 thousand at March 31, 2013, compared with $4,232,492 thousand at December 31, 2012. The following table provides additional detail regarding deposits.

	Deposits
	At March 31, 2013		At December 31, 2012
	(In thousands)
Noninterest-bearing	$	1,621,887	$	1,676,071
Interest-bearing:
Transaction		771,268		748,818
Savings		1,160,976		1,165,032
Time		607,819		642,571
Total deposits	$	4,161,950	$	4,232,492

Demand deposit overdrafts of $2,942 thousand and $6,307 thousand were included as loan balances at March 31, 2013 and December 31, 2012, respectively. Interest expense for aggregate time deposits with individual account balances in excess of $100 thousand was $304 thousand in the first quarter 2013 and $423 thousand in the first quarter 2012.

Short-term borrowed funds of $61,854 thousand at March 31, 2013 represent securities sold under agreements to repurchase the securities. As the Company is obligated to repurchase the securities, the transfer of the securities is accounted for as a secured borrowing rather than a sale. Securities sold under repurchase agreements are held in the custody of independent securities brokers. The amount of the securities approximates $112,182 thousand at March 31, 2013. The short-term borrowed funds mature on an overnight basis.

FHLB advances with carrying value of $25,743 thousand at March 31, 2013 are secured by $28,843 thousand of residential real estate loans and $9,701 of securities at March 31, 2013. The FHLB advances are due in full upon their maturity dates: $5,000 thousand mature in December 2013 and $20,000 thousand mature in January 2015. The FHLB advances may be paid off prior to such maturity dates subject to prepayment fees.

The $10,000 thousand term repurchase agreement at March 31, 2013 represents securities sold under an agreement to repurchase the securities. As the Company is obligated to repurchase the securities, the transfer of the securities is accounted for as a secured borrowing rather than a sale. Securities sold under repurchase agreements are held in the custody of independent securities brokers. The carrying amount of the related securities is approximately $14,621 thousand at March 31, 2013. The term repurchase agreement matures in full in August 2014.

The Company has a $35,000 thousand unsecured line of credit which had no outstanding balance at March 31, 2013, and a variable interest rate of 2.0% per annum with interest payable monthly on outstanding advances. Advances may be made up to the unused credit limit under the line of credit through March 19, 2014.

Debt financing of $15,000 thousand is a note issued by Westamerica Bancorporation on October 31, 2003 which matures October 31, 2013. Interest of 5.31% per annum is payable semiannually on April 30 and October 31, with principal due at maturity. The note is subject to financial covenants requiring the Company to maintain, at all times, certain minimum levels of consolidated tangible net worth and maximum levels of capital debt. The Company believes it is in compliance with all of the covenants required by the note as of March 31, 2013.

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Note 6 - Other Assets

3 Months Ended

Mar. 31, 2013

Other Assets Disclosure [Text Block]

Note 6: Other Assets

Other assets consisted of the following:

	At March 31, 2013		At December 31, 2012
	(In thousands)
Cost method equity investments:
Federal Reserve Bank stock (1)	$	14,069	$	14,069
Federal Home Loan Bank stock (2)		6,615		7,353
Other investments		376		376
Total cost method equity investments		21,060		21,798
Corporate/bank-owned life insurance		45,535		45,579
Deferred taxes		42,645		42,449
LIHTC investments		20,119		20,631
Interest receivable		20,473		20,274
FDIC receivable		12,162		13,847
Prepaid assets		11,814		11,679
Other assets		11,845		11,829
Total other assets	$	185,653	$	188,086

(1) A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in a sum equal to six percent of the bank’s paid-up capital stock and surplus. One-half of the amount of the bank's subscription shall be paid to the FRB and the remaining half will be subject to call when deemed necessary by the Board of Governors of the Federal Reserve System.

(2) Borrowings from the Federal Home Loan Bank (FHLB) must be supported by capital stock holdings. The minimum activity-based requirement is 4.7% of the outstanding advances. The requirement may be adjusted from time to time by the FHLB within limits established in the FHLB's Capital Plan.

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Note 7 - Goodwill and Identifiable Intangible Assets

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Text Block]

Note 7: Goodwill and Identifiable Intangible Assets

The Company has recorded goodwill and other identifiable intangibles associated with purchase business combinations. Goodwill is not amortized, but is periodically evaluated for impairment. The Company did not recognize impairment during the three months ended March 31, 2013 and March 31, 2012. Identifiable intangibles are amortized to their estimated residual values over their expected useful lives. Such lives and residual values are also periodically reassessed to determine if any amortization period adjustments are indicated. During the three months ended March 31, 2013 and March 31, 2012, no such adjustments were recorded.

The carrying values of goodwill were (in thousands):

March 31, 2013	$	121,673
December 31, 2012	$	121,673

The gross carrying amount of identifiable intangible assets and accumulated amortization was:

	At March 31, 2013					At December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Core Deposit Intangibles	$	56,808	$	(36,045	)	$	56,808	$	(34,938	)
Merchant Draft Processing Intangible		10,300		(9,021	)		10,300		(8,909	)
Total Identifiable Intangible Assets	$	67,108	$	(45,066	)	$	67,108	$	(43,847	)

As of March 31, 2013, the current year and estimated future amortization expense for identifiable intangible assets was:

	Core Deposit Intangibles		Merchant Draft Processing Intangible		Total
	(In thousands)
Three months ended March 31, 2013 (actual)	$	1,107	$	112	$	1,219
Estimate for year ended December 31, 2013		4,304		400		4,704
2014		3,946		324		4,270
2015		3,594		262		3,856
2016		3,292		212		3,504
2017		2,913		164		3,077
2018		1,892		29		1,921

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Note 9 - Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Text Block]

Note 9:  Fair Value Measurements

The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures.  Available for sale investment securities are recorded at fair value on a recurring basis.  Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as certain loans held for investment, investment securities held to maturity, and other assets.  These nonrecurring fair value adjustments typically involve the lower-of-cost-or-fair value accounting of individual assets.

In accordance with the Fair Value Measurement and Disclosure topic of the Codification, the Company bases its fair values on the price that would be received to sell an asset or paid to transfer a liability in the principal market or most advantageous market for an asset or liability in an orderly transaction between market participants on the measurement date under current market conditions.  A fair value measurement reflects all of the assumptions that market participants would use in pricing the asset or liability, including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset, and the risk of nonperformance.

The Company groups its assets and liabilities measured at fair value into a three-level hierarchy, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. When the valuation assumptions used to measure the fair value of the asset or liability are categorized within different levels of the fair value hierarchy, the asset or liability is categorized in its entirety within the lowest level of the hierarchy. These levels are:

Level 1 – Valuation is based upon quoted prices for identical instruments traded in active exchange markets, such as the New York Stock Exchange.  Level 1 includes U.S. Treasury, equity securities and federal agency securities, which are traded by dealers or brokers in active markets.  Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.

Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 2 includes mortgage-backed securities, corporate securities, asset-backed securities, municipal bonds and residential collateralized mortgage obligations.

Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect the Company’s estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

The Company relies on independent vendor pricing services to measure fair value for investment securities available for sale and investment securities held to maturity. The Company employs three pricing services. To validate the pricing of these vendors, the Company routinely randomly selects securities for pricing by two or more of the vendors; significant pricing differences, if any, are evaluated using all available independent quotes with the lowest quote generally used as the fair value estimate. In addition, the Company conducts “other than temporary impairment (OTTI)” analysis on a quarterly basis; securities selected for OTTI analysis include all securities with fair value pricing of less than 95 percent of amortized cost. As with any valuation technique used to estimate fair value, changes in underlying assumptions used could significantly affect the results of current and future values. Accordingly, these fair values estimates may not be realized in an actual sale of the securities.

When the Company changes its valuation assumptions for measuring financial assets and financial liabilities at fair value, either due to changes in current market conditions or other factors, it may need to transfer those assets or liabilities to another level in the hierarchy based on the new assumptions used. The Company recognizes these transfers at the end of the reporting period that the transfers occur. For the three months ended March 31, 2013 and March 31, 2012, there were no transfers in or out of levels 1, 2 or 3.

Assets Recorded at Fair Value on a Recurring Basis

The table below presents assets measured at fair value on a recurring basis.

	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other  Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
	(In thousands)
Investment securities available for sale:
At March 31, 2013	$	972,176	$	54,918	$	917,258	$	-
At December 31, 2012	$	825,636	$	57,424	$	768,212	$	-

Assets Recorded at Fair Value on a Nonrecurring Basis

The Company may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting of individual assets. For assets measured at fair value on a nonrecurring basis that were recorded in the balance sheet at March 31, 2013 and December 31, 2012, the following table provides the level of valuation assumptions used to determine each adjustment and the carrying value of the related assets at period end.

	At March 31, 2013
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	5,869	$	-	$	5,869	$	-	$	(446	)
Covered other real estate owned		8,055		-		8,055		-		(146	)
Originated impaired loans		3,618		-		2,628		990		(1,676	)
Purchased covered impaired loans		4,660		-		200		4,460		-
Total assets measured at fair value on a nonrecurring basis	$	22,202	$	-	$	16,752	$	5,450	$	(2,268	)

	At December 31, 2012
	Fair Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Non-covered other real estate owned	$	6,618	$	-	$	6,618	$	-	$	(1,360	)
Covered other real estate owned		7,929		-		7,929		-		(371	)
Originated impaired loans		5,197		-		3,097		2,100		(3,158	)
Purchased covered impaired loans		6,684		-		2,224		4,460		(83	)
Total assets measured at fair value on a nonrecurring basis	$	26,428	$	-	$	19,868	$	6,560	$	(4,972	)

Level 2 – Valuation is based upon independent market prices or appraised value of the collateral, less 10% for selling costs, generally.  Level 2 includes other real estate owned that has been measured at fair value subsequent to its initial classification as foreclosed assets and impaired loans collateralized by real property where a specific reserve has been established or a charge-off has been recorded.

Level 3 – Valuation is based upon estimated liquidation values of loan collateral.  The value of level 3 assets can also include a component of real estate, which is valued as described for level 2 inputs, when collateral for the impaired loan includes both business assets and real estate.  Level 3 includes impaired loans where a specific reserve has been established or a charge-off has been recorded.

Disclosures about Fair Value of Financial Instruments

The following section describes the valuation methodologies used by the Company for estimating fair value of financial instruments not recorded at fair value in the balance sheet.

Cash and Due from Banks  Cash and due from banks represent U.S. dollar denominated coin and currency, deposits at the Federal Reserve Bank and correspondent banks, and amounts being settled with other banks to complete the processing of  customers’ daily transactions. Collectively, the Federal Reserve Bank and financial institutions operate a market in which cash and due from banks transactions are processed continuously in significant daily volumes honoring the face value of the U.S. dollar.

Investment Securities Held to Maturity  The fair values of investment securities were estimated using quoted prices as described above for Level 1 and Level 2 valuation.

Loans  Loans were separated into two groups for valuation. Variable rate loans, except for those described below, which reprice frequently with changes in market rates were valued using historical cost. Fixed rate loans and variable rate loans that have reached their minimum contractual interest rates were valued by discounting the future cash flows expected to be received from the loans using current interest rates charged on loans with similar characteristics. Additionally, the allowance for loan losses of $30,354 thousand at March 31, 2013 and $30,234 thousand at December 31, 2012 and the fair value discount due to credit default risk associated with purchased covered and purchased non-covered loans of $22,660 thousand and $4,587 thousand, respectively at March 31, 2013 and purchased covered and purchased non-covered loans of $26,128 thousand and $5,226 thousand, respectively at December 31, 2012 were applied against the estimated fair values to recognize estimated future defaults of contractual cash flows. The Company does not consider these values to be a liquidation price for the loans.

FDIC Receivable  The fair value of the FDIC receivable recorded in Other Assets was estimated by discounting estimated future cash flows using current market rates for financial instruments with similar characteristics.

Deposit Liabilities  Deposits with no stated maturity such as checking accounts, savings accounts and money market accounts can be readily converted to cash or used to settle transactions at face value through the broad financial system operated by the Federal Reserve Bank and financial institutions. The fair value of deposits with no stated maturity is equal to the amount payable on demand. The fair values of time deposits were estimated by discounting estimated future contractual cash flows using current market rates for financial instruments with similar characteristics.

Short-Term Borrowed Funds  The carrying amount of securities sold under agreement to repurchase and other short-term borrowed funds approximate fair value due to the relatively short period of time between their origination and their expected realization.

Federal Home Loan Bank Advances  The fair values of FHLB advances were estimated by using redemption amounts quoted by the Federal Home Loan Bank of San Francisco.

Term Repurchase Agreement  The fair value of the term repurchase agreement was estimated by using interpolated yields for financial instruments with similar characteristics.

Debt Financing  The fair value of debt financing was estimated by using interpolated yields for financial instruments with similar characteristics.

The table below is a summary of fair value estimates for financial instruments and the level of the fair value hierarchy within which the fair value measurements are categorized, excluding financial instruments recorded at fair value on a recurring basis. The values assigned do not necessarily represent amounts which ultimately may be realized. In addition, these values do not give effect to discounts to fair value which may occur when financial instruments are sold in larger quantities.  The carrying amounts in the following table are recorded in the balance sheet under the indicated captions.

The Company has not included assets and liabilities that are not financial instruments, such as goodwill, long-term relationships with deposit, merchant processing and trust customers, other purchased intangibles, premises and equipment, deferred taxes and other assets and liabilities. The total estimated fair values do not represent, and should not be construed to represent, the underlying value of the Company.

	At March 31, 2013
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	355,459	$	355,459	$	355,459	$	-	$	-
Investment securities held to maturity		1,162,358		1,185,641		2,775		1,182,866		-
Loans		2,006,580		2,014,826		-		-		2,014,826
Other assets - FDIC receivable		12,162		12,155		-		-		12,155
Financial Liabilities:
Deposits	$	4,161,950	$	4,161,713	$	-	$	3,554,131	$	607,582
Short-term borrowed funds		61,854		61,854		-		61,854		-
Federal Home Loan Bank advances		25,743		26,014		26,014		-		-
Term repurchase agreement		10,000		10,114		-		10,114		-
Debt financing		15,000		15,365		-		15,365		-

	At December 31, 2012
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	491,382	$	491,382	$	491,382	$	-	$	-
Investment securities held to maturity		1,156,041		1,184,557		3,275		1,181,282		-
Loans		2,081,123		2,090,712		-		-		2,090,712
Other assets - FDIC receivable		13,847		13,834		-		-		13,834
Financial Liabilities:
Deposits	$	4,232,492	$	4,232,239	$	-	$	3,589,921	$	642,318
Short-term borrowed funds		53,687		53,687		-		53,687		-
Federal Home Loan Bank advances		25,799		26,150		26,150		-		-
Term repurchase agreement		10,000		10,135		-		10,135		-
Debt financing		15,000		15,645		-		15,645		-

The majority of the Company’s standby letters of credit and other commitments to extend credit carry current market interest rates if converted to loans. No premium or discount was ascribed to these commitments because virtually all funding would be at current market rates.

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Changes in the carrying amount of impaired purchased loans (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Purchased Covered Loans [Member]
Carrying amount at the beginning of the period	$ 7,865	$ 18,591
Reductions during the period	(284)	(10,726)
Carrying amount at the end of the period	7,581	7,865
Purchased Non-Covered Loans [Member]
Carrying amount at the beginning of the period	6,764	15,572
Reductions during the period	(804)	(8,808)
Carrying amount at the end of the period	$ 5,960	$ 6,764

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Note 8 - Deposits and Borrowed Funds (Detail) - Deposits (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Noninterest-bearing	$ 1,621,887	$ 1,676,071
Interest-bearing:
Transaction	771,268	748,818
Savings	1,160,976	1,165,032
Time	607,819	642,571
Total deposits	$ 4,161,950	$ 4,232,492

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Note 6 - Other Assets (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Other Assets [Table Text Block]

	At March 31, 2013		At December 31, 2012
	(In thousands)
Cost method equity investments:
Federal Reserve Bank stock (1)	$	14,069	$	14,069
Federal Home Loan Bank stock (2)		6,615		7,353
Other investments		376		376
Total cost method equity investments		21,060		21,798
Corporate/bank-owned life insurance		45,535		45,579
Deferred taxes		42,645		42,449
LIHTC investments		20,119		20,631
Interest receivable		20,473		20,274
FDIC receivable		12,162		13,847
Prepaid assets		11,814		11,679
Other assets		11,845		11,829
Total other assets	$	185,653	$	188,086

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Note 3 - Investment Securities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Pledged Financial Instruments, Not Separately Reported, Securities	$ 872,470	$ 850,421

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Note 7 - Goodwill and Identifiable Intangible Assets (Detail) - Estimated future amortization expense for identifiable intangible assets (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Three months ended March 31, 2013 (actual)	$ 1,219	$ 1,402
Estimate for year ended December 31, 2013	4,704
2014	4,270
2015	3,856
2016	3,504
2017	3,077
2018	1,921
Core Deposits [Member]
Three months ended March 31, 2013 (actual)	1,107
Estimate for year ended December 31, 2013	4,304
2014	3,946
2015	3,594
2016	3,292
2017	2,913
2018	1,892
Mechant Draft Processing [Member]
Three months ended March 31, 2013 (actual)	112
Estimate for year ended December 31, 2013	400
2014	324
2015	262
2016	212
2017	164
2018	$ 29

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Note 4 - Loans and Allowance for Credit Losses (Detail) - Impaired loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Commercial [Member]
Impaired loans with no related allowance recorded:
Impaired loans with no related allowance recorded, recorded investment	$ 2,277	$ 3,100
Impaired loans with no related allowance recorded, unpaid principal balance	8,187	9,506
Impaired loans with an allowance recorded:
Impaired loans with an allowance recorded, recorded investment	9,952	12,129
Impaired loans with an allowance recorded, unpaid principal balance	11,582	13,739
Impaired loans with an allowance recorded, related allowance	1,609	2,588
Total:
Recorded Investment	12,229	15,229
Unpaid Principal Balance	19,769	23,245
Related Allowance	1,609	2,588
Commercial Real Estate Loans [Member]
Impaired loans with no related allowance recorded:
Impaired loans with no related allowance recorded, recorded investment	26,155	24,135
Impaired loans with no related allowance recorded, unpaid principal balance	30,081	27,972
Impaired loans with an allowance recorded:
Impaired loans with an allowance recorded, recorded investment	2,686	4,038
Impaired loans with an allowance recorded, unpaid principal balance	2,686	4,038
Impaired loans with an allowance recorded, related allowance	584	164
Total:
Recorded Investment	28,841	28,173
Unpaid Principal Balance	32,767	32,010
Related Allowance	584	164
Construction [Member]
Impaired loans with no related allowance recorded:
Impaired loans with no related allowance recorded, recorded investment	1,859	2,363
Impaired loans with no related allowance recorded, unpaid principal balance	2,355	2,992
Total:
Recorded Investment	1,859	2,363
Unpaid Principal Balance	2,355	2,992
Residential Real Estate Loans [Member]
Impaired loans with no related allowance recorded:
Impaired loans with no related allowance recorded, recorded investment	701	668
Impaired loans with no related allowance recorded, unpaid principal balance	702	668
Total:
Recorded Investment	701	668
Unpaid Principal Balance	702	668
Consumer Installment And Other [Member]
Impaired loans with no related allowance recorded:
Impaired loans with no related allowance recorded, recorded investment	1,597	2,328
Impaired loans with no related allowance recorded, unpaid principal balance	2,402	2,616
Total:
Recorded Investment	1,597	2,328
Unpaid Principal Balance	$ 2,402	$ 2,616

XML

Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 17,271	$ 21,005
Other comprehensive income:
Increase in net unrealized gains on securities available for sale	1,272	1,384
Deferred tax expense	(534)	(582)
Increase in net unrealized gains on securities available for sale, net of tax	738	802
Post-retirement benefit transition obligation amortization	15	15
Deferred tax expense	(6)	(6)
Post-retirement benefit transition obligation amortization, net of tax	9	9
Total other comprehensive income	747	811
Total comprehensive income	$ 18,018	$ 21,816

XML

Note 3 - Investment Securities

3 Months Ended

Mar. 31, 2013

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note 3:  Investment Securities

The amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of investment securities available for sale follows:

	Investment Securities Available for Sale At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,516	$	31	$	-		$	3,547
Securities of U.S. Government sponsored entities		44,236		166		(10	)		44,392
Residential mortgage-backed securities		45,756		3,157		(3	)		48,910
Commercial mortgage-backed securities		3,827		63		-			3,890
Obligations of States and political subdivisions		195,326		13,040		(275	)		208,091
Residential collateralized mortgage obligations		268,282		2,140		(509	)		269,913
Asset-backed securities		15,686		25		(98	)		15,613
FHLMC and FNMA stock		825		4,872		(3	)		5,694
Corporate securities		365,847		3,739		(673	)		368,913
Other securities		2,058		1,227		(72	)		3,213
Total	$	945,359	$	28,460	$	(1,643	)	$	972,176

The amortized cost, unrealized gains and losses, and fair value of investment securities held to maturity follows:

	Investment Securities Held to Maturity At March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	2,747	$	28	$	-		$	2,775
Residential mortgage-backed securities		68,417		1,774		(14	)		70,177
Obligations of States and political subdivisions		720,514		18,378		(2,913	)		735,979
Residential collateralized mortgage obligations		370,680		6,401		(371	)		376,710
Total	$	1,162,358	$	26,581	$	(3,298	)	$	1,185,641

The amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of investment securities available for sale follows:

	Investment Securities Available for Sale At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
U.S. Treasury securities	$	3,520	$	38	$	-		$	3,558
Securities of U.S. Government sponsored entities		49,335		207		(17	)		49,525
Residential mortgage-backed securities		53,078		3,855		(1	)		56,932
Commercial mortgage-backed securities		4,076		69		-			4,145
Obligations of States and political subdivisions		200,769		14,730		(252	)		215,247
Residential collateralized mortgage obligations		219,613		1,786		(294	)		221,105
Asset-backed securities		16,130		18		(143	)		16,005
FHLMC and FNMA stock		824		2,061		(5	)		2,880
Corporate securities		250,655		3,009		(826	)		252,838
Other securities		2,091		1,370		(60	)		3,401
Total	$	800,091	$	27,143	$	(1,598	)	$	825,636

The amortized cost, unrealized gains and losses, and fair value of investment securities held to maturity follows:

	Investment Securities Held to Maturity At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Securities of U.S. Government sponsored entities	$	3,232	$	43	$	-		$	3,275
Residential mortgage-backed securities		72,807		2,090		(10	)		74,887
Obligations of States and political subdivisions		680,802		23,004		(1,235	)		702,571
Residential collateralized mortgage obligations		399,200		5,185		(561	)		403,824
Total	$	1,156,041	$	30,322	$	(1,806	)	$	1,184,557

The amortized cost and fair value of investment securities by contractual maturity are shown in the following tables at the dates indicated:

	At March 31, 2013
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	79,377	$	80,036	$	10,458	$	10,733
Over 1 to 5 years		371,270		375,009		166,385		170,445
Over 5 to 10 years		70,880		74,190		265,198		272,601
Over 10 years		103,084		111,321		281,220		284,975
Subtotal		624,611		640,556		723,261		738,754
Mortgage-backed securities and residential collateralized mortgage obligations		317,865		322,713		439,097		446,887
Other securities		2,883		8,907		-		-
Total	$	945,359	$	972,176	$	1,162,358	$	1,185,641

	At December 31, 2012
	Securities Available for Sale				Securities Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Maturity in years:
1 year or less	$	40,380	$	40,686	$	10,265	$	10,496
Over 1 to 5 years		309,293		312,480		167,162		171,769
Over 5 to 10 years		59,817		63,540		227,603		236,608
Over 10 years		110,919		120,467		279,004		286,973
Subtotal		520,409		537,173		684,034		705,846
Mortgage-backed securities and residential collateralized mortgage obligations		276,767		282,182		472,007		478,711
Other securities		2,915		6,281		-		-
Total	$	800,091	$	825,636	$	1,156,041	$	1,184,557

Expected maturities of mortgage-backed securities can differ from contractual maturities because borrowers have the right to call or prepay obligations with or without call or prepayment penalties. In addition, such factors as prepayments and interest rates may affect the yield on the carrying value of mortgage-backed securities. At March 31, 2013 and December 31, 2012, the Company had no high-risk collateralized mortgage obligations as defined by regulatory guidelines.

An analysis of gross unrealized losses of investment securities available for sale follows:

	Investment Securities Available for Sale At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,990	$	(10	)	$	-	$	-		$	9,990	$	(10	)
Residential mortgage-backed securities		64		(1	)		884		(2	)		948		(3	)
Obligations of States and political subdivisions		3,107		(23	)		9,030		(252	)		12,137		(275	)
Residential collateralized mortgage obligations		85,377		(509	)		-		-			85,377		(509	)
Asset-backed securities		-		-			5,449		(98	)		5,449		(98	)
FHLMC and FNMA stock		-		-			3		(3	)		3		(3	)
Corporate securities		68,203		(386	)		19,713		(287	)		87,916		(673	)
Other securities		-		-			1,928		(72	)		1,928		(72	)
Total	$	166,741	$	(929	)	$	37,007	$	(714	)	$	203,748	$	(1,643	)

An analysis of gross unrealized losses of investment securities held to maturity follows:

	Investment Securities Held to Maturity At March 31, 2013
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	255	$	-		$	7,775	$	(14	)	$	8,030	$	(14	)
Obligations of States and political subdivisions		153,086		(2,782	)		8,887		(131	)		161,973		(2,913	)
Residential collateralized mortgage obligations		10,268		(167	)		12,770		(204	)		23,038		(371	)
Total	$	163,609	$	(2,949	)	$	29,432	$	(349	)	$	193,041	$	(3,298	)

The unrealized losses on the Company’s investment securities were caused by market conditions for these types of investments.  The Company evaluates securities on a quarterly basis including changes in security ratings issued by ratings agencies, changes in the financial condition of the issuer, and, for mortgage-related and asset-backed securities, delinquency and loss information with respect to the underlying collateral, changes in the levels of subordination for the Company’s particular position within the repayment structure, and remaining credit enhancement as compared to expected credit losses of the security. Substantially all of these securities continue to be investment grade rated by one or more major rating agencies. In addition to monitoring credit rating agency evaluations, Management performs its own evaluations regarding the credit worthiness of the issuer or the securitized assets underlying asset backed securities.

The Company does not intend to sell any investments and has concluded that it is more likely than not that it will not be required to sell the investments prior to recovery of the amortized cost basis. Therefore, the Company does not consider these investments to be other-than-temporarily impaired as of March 31, 2013.

The fair values of the investment securities could decline in the future if the general economy deteriorates, credit ratings decline, the issuer’s financial condition deteriorates, or the liquidity for securities declines. As a result, other than temporary impairments may occur in the future.

As of March 31, 2013, $872,470 thousand of investment securities were pledged to secure public deposits, short-term borrowed funds, and term repurchase agreements, compared to $850,421 thousand at December 31, 2012.

An analysis of gross unrealized losses of investment securities available for sale follows:

	Investment Securities Available for Sale At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Securities of U.S. Government sponsored entities	$	9,983	$	(17	)	$	-	$	-		$	9,983	$	(17	)
Residential mortgage-backed securities		103		(1	)		11		-			114		(1	)
Residential collateralized mortgage obligations		72,803		(294	)		-		-			72,803		(294	)
Obligations of States and political subdivisions		2,080		(23	)		8,928		(229	)		11,008		(252	)
Asset-backed securities		-		-			5,828		(143	)		5,828		(143	)
FHLMC and FNMA stock		-		-			1		(5	)		1		(5	)
Corporate securities		53,570		(423	)		24,597		(403	)		78,167		(826	)
Other securities		-		-			1,940		(60	)		1,940		(60	)
Total	$	138,539	$	(758	)	$	41,305	$	(840	)	$	179,844	$	(1,598	)

An analysis of gross unrealized losses of investment securities held to maturity follows:

	Investment Securities Held to Maturity At December 31, 2012
	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Residential mortgage-backed securities	$	113	$	-		$	664	$	(10	)	$	777	$	(10	)
Residential collateralized mortgage obligations		26,683		(386	)		9,353		(175	)		36,036		(561	)
Obligations of States and political subdivisions		69,839		(1,205	)		4,275		(30	)		74,114		(1,235	)
Total	$	96,635	$	(1,591	)	$	14,292	$	(215	)	$	110,927	$	(1,806	)

The following table provides information about the amount of interest income from taxable and non-taxable investment securities:

	For the Three Months Ended March 31,
	2013		2012
	(In thousands)
Taxable:
Mortgage related securities	$	3,561	$	3,364
Other		1,974		1,326
Total taxable		5,535		4,690
Tax-exempt		7,531		7,952
Total interest income from investment securities	$	13,066	$	12,642

XML

Note 11 - Earnings Per Common Share (Detail) - Earnings per common share and diluted earnings per common share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income applicable to common equity (numerator) (in Dollars)	$ 17,271	$ 21,005
Weighted average number of common shares outstanding - basic	27,145	28,051
Add exercise of options reduced by the number of shares that could have been purchased with the proceeds of such exercise	12	60
Weighted average number of common shares outstanding - diluted (denominator)	27,157	28,111
Diluted earnings per common share (in Dollars per share)	$ 0.64	$ 0.75
Basic earnings per common share (in Dollars per share)	$ 0.64	$ 0.75

XML

Note 3 - Investment Securities (Detail) - Amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value - available for sale investment securities portfolio (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Amortized Cost	$ 945,359	$ 800,091
Gross Unrealized Gains	28,460	27,143
Gross Unrealized Losses	(1,643)	(1,598)
Fair Value	972,176	825,636
US Treasury Securities [Member]
Amortized Cost	3,516	3,520
Gross Unrealized Gains	31	38
Fair Value	3,547	3,558
US Government-sponsored Enterprises Debt Securities [Member]
Amortized Cost	44,236	49,335
Gross Unrealized Gains	166	207
Gross Unrealized Losses	(10)	(17)
Fair Value	44,392	49,525
Residential Mortgage Backed Securities [Member]
Amortized Cost	45,756	53,078
Gross Unrealized Gains	3,157	3,855
Gross Unrealized Losses	(3)	(1)
Fair Value	48,910	56,932
Commercial Mortgage Backed Securities [Member]
Amortized Cost	3,827	4,076
Gross Unrealized Gains	63	69
Fair Value	3,890	4,145
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	195,326	200,769
Gross Unrealized Gains	13,040	14,730
Gross Unrealized Losses	(275)	(252)
Fair Value	208,091	215,247
Residential Collateralized Mortgage Obligations [Member]
Amortized Cost	268,282	219,613
Gross Unrealized Gains	2,140	1,786
Gross Unrealized Losses	(509)	(294)
Fair Value	269,913	221,105
Asset-backed Securities [Member]
Amortized Cost	15,686	16,130
Gross Unrealized Gains	25	18
Gross Unrealized Losses	(98)	(143)
Fair Value	15,613	16,005
FHLMC And FNMA Stock [Member]
Amortized Cost	825	824
Gross Unrealized Gains	4,872	2,061
Gross Unrealized Losses	(3)	(5)
Fair Value	5,694	2,880
Domestic Corporate Debt Securities [Member]
Amortized Cost	365,847	250,655
Gross Unrealized Gains	3,739	3,009
Gross Unrealized Losses	(673)	(826)
Fair Value	368,913	252,838
Other Securities [Member]
Amortized Cost	2,058	2,091
Gross Unrealized Gains	1,227	1,370
Gross Unrealized Losses	(72)	(60)
Fair Value	$ 3,213	$ 3,401

XML

Note 4 - Loans and Allowance for Credit Losses (Detail) - Credit risk profile by internally assigned grade (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Grade:
Loans by grade	$ 2,036,934		$ 2,111,357
Pass [Member] | Commercial [Member]
Grade:
Loans by grade	305,285		324,452
Pass [Member] | Commercial Real Estate Loans [Member]
Grade:
Loans by grade	590,834		599,472
Pass [Member] | Construction [Member]
Grade:
Loans by grade	7,457		7,518
Pass [Member] | Residential Real Estate Loans [Member]
Grade:
Loans by grade	211,445		219,655
Pass [Member] | Consumer Installment And Other [Member]
Grade:
Loans by grade	446,365		459,076
Pass [Member] | Purchased Non-Covered Loans [Member]
Grade:
Loans by grade	48,379		51,901
Pass [Member] | Purchased Covered Loans [Member]
Grade:
Loans by grade	253,854	[1]	274,976	[1]
Pass [Member]
Grade:
Loans by grade	1,863,619		1,937,050
Substandard [Member] | Commercial [Member]
Grade:
Loans by grade	10,798		11,413
Substandard [Member] | Commercial Real Estate Loans [Member]
Grade:
Loans by grade	34,351		33,455
Substandard [Member] | Construction [Member]
Grade:
Loans by grade	463		466
Substandard [Member] | Residential Real Estate Loans [Member]
Grade:
Loans by grade	2,474		2,803
Substandard [Member] | Consumer Installment And Other [Member]
Grade:
Loans by grade	1,224		1,158
Substandard [Member] | Purchased Non-Covered Loans [Member]
Grade:
Loans by grade	25,172		27,066
Substandard [Member] | Purchased Covered Loans [Member]
Grade:
Loans by grade	121,300	[1]	122,815	[1]
Substandard [Member]
Grade:
Loans by grade	195,782		199,176
Doubtful [Member] | Commercial [Member]
Grade:
Loans by grade	2,419		4,251
Doubtful [Member] | Consumer Installment And Other [Member]
Grade:
Loans by grade	31		46
Doubtful [Member] | Purchased Non-Covered Loans [Member]
Grade:
Loans by grade	1,539		1,145
Doubtful [Member] | Purchased Covered Loans [Member]
Grade:
Loans by grade	455	[1]	470	[1]
Doubtful [Member]
Grade:
Loans by grade	4,444		5,912
Unlikely to be Collected Financing Receivable [Member] | Consumer Installment And Other [Member]
Grade:
Loans by grade	250		418
Unlikely to be Collected Financing Receivable [Member] | Purchased Non-Covered Loans [Member]
Grade:
Loans by grade			5
Unlikely to be Collected Financing Receivable [Member] | Purchased Covered Loans [Member]
Grade:
Loans by grade	85	[1]	150	[1]
Unlikely to be Collected Financing Receivable [Member]
Grade:
Loans by grade	335		573
Default Risk Purchase Discount [Member] | Purchased Non-Covered Loans [Member]
Grade:
Loans by grade	(4,586)		(5,226)
Default Risk Purchase Discount [Member] | Purchased Covered Loans [Member]
Grade:
Loans by grade	(22,660)	[1]	(26,128)	[1]
Default Risk Purchase Discount [Member]
Grade:
Loans by grade	(27,246)		(31,354)
Commercial [Member]
Grade:
Loans by grade	318,502		340,116
Commercial Real Estate Loans [Member]
Grade:
Loans by grade	625,185		632,927
Construction [Member]
Grade:
Loans by grade	7,920		7,984
Residential Real Estate Loans [Member]
Grade:
Loans by grade	213,919		222,458
Consumer Installment And Other [Member]
Grade:
Loans by grade	447,870		460,698
Purchased Non-Covered Loans [Member]
Grade:
Loans by grade	70,504		74,891
Purchased Covered Loans [Member]
Grade:
Loans by grade	$ 353,034	[1]	$ 372,283	[1]

[1] Credit risk profile reflects internally assigned grade of purchased covered loans without regard to FDIC indemnification.

XML

Note 4 - Loans and Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2013

Schedule Of Loans Receivable [Table Text Block]

	At March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	318,502		$	625,185		$	7,920		$	213,919		$	447,870		$	1,613,396
Purchased covered loans:
Impaired		293			6,899			1,737			-			255			9,184
Non impaired		57,589			232,854			4,942			8,816			62,309			366,510
Purchase discount		(6,958	)		(13,600	)		(188	)		(434	)		(1,480	)		(22,660	)
Purchased non-covered loans:
Impaired		1,244			6,111			-			-			297			7,652
Non impaired		9,367			37,548			1,369			2,205			16,949			67,438
Purchase discount		(913	)		(1,750	)		(95	)		(262	)		(1,566	)		(4,586	)
Total	$	379,124		$	893,247		$	15,685		$	224,244		$	524,634		$	2,036,934

	At December 31, 2012
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment & Other			Total
	(In thousands)
Originated loans	$	340,116		$	632,927		$	7,984		$	222,458		$	460,698		$	1,664,183
Purchased covered loans:
Impaired		308			7,585			1,824			-			257			9,974
Non impaired		59,135			247,534			5,462			9,374			66,932			388,437
Purchase discount		(8,459	)		(15,140	)		(279	)		(433	)		(1,817	)		(26,128	)
Purchased non-covered loans:
Impaired		1,261			6,763			-			-			297			8,321
Non impaired		9,840			38,673			1,619			3,110			18,554			71,796
Purchase discount		(870	)		(1,748	)		(95	)		(474	)		(2,039	)		(5,226	)
Total	$	401,331		$	916,594		$	16,515		$	234,035		$	542,882		$	2,111,357

Impaired Purchased Loans Roll Forward [Table Text Block]

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased covered loans	(In thousands)
Carrying amount at the beginning of the period	$	7,865		$	18,591
Reductions during the period		(284	)		(10,726	)
Carrying amount at the end of the period	$	7,581		$	7,865

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Impaired purchased non-covered loans	(In thousands)
Carrying amount at the beginning of the period	$	6,764		$	15,572
Reductions during the period		(804	)		(8,808	)
Carrying amount at the end of the period	$	5,960		$	6,764

Accretable Yield Reconciliation Schedule [Table Text Block]

	For the Three Months Ended March 31, 2013			For the Year Ended December 31, 2012
Accretable yield:	(In thousands)
Balance at the beginning of the period	$	4,948		$	9,990
Reclassification from nonaccretable difference		8,154			12,121
Accretion		(3,641	)		(17,163	)
Disposals and other		-			-
Balance at the end of the period	$	9,461		$	4,948
Accretion	$	(3,641	)	$	(17,163	)
Reduction in FDIC indemnification asset		2,782			13,207
(Increase) in interest income	$	(859	)	$	(3,956	)

Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block]

	Allowance for Credit Losses For the Three Months Ended March 31, 2013
	Commercial			Commercial Real Estate			Construction			Residential Real Estate			Consumer Installment and Other			Purchased Non-covered Loans		Purchased Covered Loans			Unallocated		Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,445		$	10,063		$	484		$	380		$	3,194		$	-	$	1,005		$	8,663	$	30,234
Additions:
Provision		531			994			(4	)		246			281			-		87			665		2,800
Deductions:
Chargeoffs		(1,902	)		(113	)		-			(87	)		(1,308	)		-		(359	)		-		(3,769	)
Recoveries		462			21			-			-			601			-		5			-		1,089
Net loan losses		(1,440	)		(92	)		-			(87	)		(707	)		-		(354	)		-		(2,680	)
Balance at end of period		5,536			10,965			480			539			2,768			-		738			9,328		30,354
Liability for off-balance sheet credit exposure		1,663			3			-			-			453			-		-			574		2,693
Total allowance for credit losses	$	7,199		$	10,968		$	480		$	539		$	3,221		$	-	$	738		$	9,902	$	33,047

	Allowance for Credit Losses For the Three Months Ended March 31, 2012
	Commercial			Commercial Real Estate			Construction		Residential Real Estate			Consumer Installment and Other			Purchased Covered Loans			Unallocated			Total
	(In thousands)
Allowance for loan losses:
Balance at beginning of period	$	6,012		$	10,611		$	2,342	$	781		$	3,072		$	-		$	9,779		$	32,597
Additions:
Provision		1,275			1,764			411		734			627			490			(2,501	)		2,800
Deductions:
Chargeoffs		(862	)		(948	)		-		(870	)		(1,653	)		(365	)		-			(4,698	)
Recoveries		389			-			2		-			779			14			-			1,184
Net loan losses		(473	)		(948	)		2		(870	)		(874	)		(351	)		-			(3,514	)
Balance at end of period		6,814			11,427			2,755		645			2,825			139			7,278			31,883
Liability for off-balance sheet credit exposure		1,643			-			26		-			189			-			835			2,693
Total allowance for credit losses	$	8,457		$	11,427		$	2,781	$	645		$	3,014		$	139		$	8,113		$	34,576

Schedule Of Recorded Investment In Loans Evaluted For Impairment [Table Text Block]

	Recorded Investment in Loans Evaluated for Impairment At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	886	$	584	$	-	$	-	$	-	$	-	$	723	$	-	$	2,193
Collectively evaluated for impairment		6,313		10,384		480		539		3,221		-		15		9,902		30,854
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	7,199	$	10,968	$	480	$	539	$	3,221	$	-	$	738	$	9,902	$	33,047
Carrying value of loans:
Individually evaluated for impairment	$	2,171	$	3,319	$	-	$	-	$	-	$	5,196	$	16,086	$	-	$	26,772
Collectively evaluated for impairment		316,331		621,866		7,920		213,919		447,870		59,348		329,367		-		1,996,621
Purchased loans with evidence of credit deterioration		-		-		-		-		-		5,960		7,581		-		13,541
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504	$	353,034	$	-	$	2,036,934

	Recorded Investment in Loans Evaluated for Impairment At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans		Purchased Covered Loans		Unallocated		Total
	(In thousands)
Allowance for credit losses:
Individually evaluated for impairment	$	1,865	$	134	$	-	$	-	$	-	$	-	$	753	$	-	$	2,752
Collectively evaluated for impairment		6,314		9,938		484		380		3,613		-		252		9,194		30,175
Purchased loans with evidence of credit deterioration		-		-		-		-		-		-		-		-		-
Total	$	8,179	$	10,072	$	484	$	380	$	3,613	$	-	$	1,005	$	9,194	$	32,927
Carrying value of loans:
Individually evaluated for impairment	$	5,153	$	4,161	$	-	$	-	$	-	$	3,029	$	16,680	$	-	$	29,023
Collectively evaluated for impairment		334,963		628,766		7,984		222,458		460,698		65,098		347,738		-		2,067,705
Purchased loans with evidence of credit deterioration		-		-		-		-		-		6,764		7,865		-		14,629
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891	$	372,283	$	-	$	2,111,357

Financing Receivable Credit Quality Indicators [Table Text Block]

	Credit Risk Profile by Internally Assigned Grade At March 31, 2013
	Commercial		Commercial Real Estate		Construction		Residential Real Estate		Consumer Installment and Other		Purchased Non- covered Loans			Purchased Covered Loans (1)			Total
	(In thousands)
Grade:
Pass	$	305,285	$	590,834	$	7,457	$	211,445	$	446,365	$	48,379		$	253,854		$	1,863,619
Substandard		10,798		34,351		463		2,474		1,224		25,172			121,300			195,782
Doubtful		2,419		-		-		-		31		1,539			455			4,444
Loss		-		-		-		-		250		-			85			335
Default risk purchase discount		-		-		-		-		-		(4,586	)		(22,660	)		(27,246	)
Total	$	318,502	$	625,185	$	7,920	$	213,919	$	447,870	$	70,504		$	353,034		$	2,036,934

	Credit Risk Profile by Internally Assigned Grade At December 31, 2012
	Commercial		Commercial Real Estate		Construction		Residential Real  Estate		Consumer  Installment and Other		Purchased Non- covered Loans			Purchased  Covered  Loans (1)			Total
	(In thousands)
Grade:
Pass	$	324,452	$	599,472	$	7,518	$	219,655	$	459,076	$	51,901		$	274,976		$	1,937,050
Substandard		11,413		33,455		466		2,803		1,158		27,066			122,815			199,176
Doubtful		4,251		-		-		-		46		1,145			470			5,912
Loss		-		-		-		-		418		5			150			573
Default risk purchase discount		-		-		-		-		-		(5,226	)		(26,128	)		(31,354	)
Total	$	340,116	$	632,927	$	7,984	$	222,458	$	460,698	$	74,891		$	372,283		$	2,111,357

Past Due Financing Receivables [Table Text Block]

	Summary of Loans by Delinquency and Nonaccrual Status At March 31, 2013
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	313,381	$	2,493	$	-	$	2,628	$	318,502
Commercial real estate		613,517		6,427		-		5,241		625,185
Construction		7,920		-		-		-		7,920
Residential real estate		213,353		333		-		233		213,919
Consumer installment & other		444,284		3,224		305		57		447,870
Total originated loans		1,592,455		12,477		305		8,159		1,613,396
Purchased non-covered loans		60,242		1,150		-		9,112		70,504
Purchased covered loans		330,958		10,111		88		11,877		353,034
Total	$	1,983,655	$	23,738	$	393	$	29,148	$	2,036,934

	Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2012
	Current and Accruing		30-89 Days Past Due and Accruing		Past Due 90 days or More and Accruing		Nonaccrual		Total Loans
	(In thousands)
Commercial	$	333,474	$	1,032	$	-	$	5,610	$	340,116
Commercial real estate		616,276		10,750		-		5,901		632,927
Construction		7,984		-		-		-		7,984
Residential real estate		220,032		2,193		-		233		222,458
Consumer installment & other		455,007		5,205		455		31		460,698
Total originated loans		1,632,773		19,180		455		11,775		1,664,183
Purchased non-covered loans		65,567		1,821		4		7,499		74,891
Purchased covered loans		352,619		6,488		155		13,021		372,283
Total	$	2,050,959	$	27,489	$	614	$	32,295	$	2,111,357

Effect Of Nonaccrual Loans On Interest Income [Table Text Block]

	For the Three Months Ended March 31,
	2013			2012
	(In thousands)
Interest income that would have been recognized had the loans performed in accordance with their original terms	$	753		$	1,064
Less: Interest income recognized on nonaccrual loans		(375	)		(842	)
Total (addition) reduction of interest income	$	378		$	222

Impaired Financing Receivables [Table Text Block]

	Impaired Loans At March 31, 2013
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	2,277	$	8,187	$	-
Commercial real estate		26,155		30,081		-
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-
Impaired loans with an allowance recorded:
Commercial		9,952		11,582		1,609
Commercial real estate		2,686		2,686		584
Total:
Commercial	$	12,229	$	19,769	$	1,609
Commercial real estate		28,841		32,767		584
Construction		1,859		2,355		-
Residential real estate		701		702		-
Consumer installment and other		1,597		2,402		-

	Impaired Loans At December 31, 2012
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
Impaired loans with no related allowance recorded:
Commercial	$	3,100	$	9,506	$	-
Commercial real estate		24,135		27,972		-
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-
Impaired loans with an allowance recorded:
Commercial		12,129		13,739		2,588
Commercial real estate		4,038		4,038		164
Total:
Commercial	$	15,229	$	23,245	$	2,588
Commercial real estate		28,173		32,010		164
Construction		2,363		2,992		-
Residential real estate		668		668		-
Consumer installment and other		2,328		2,616		-

Impaired Financing Receivables, Supplemental Schedule [Table Text Block]

	Impaired Loans For the Three Months Ended March 31,
	2013				2012
	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
	(In thousands)
Commercial	$	13,729	$	54	$	6,576	$	50
Commercial real estate		28,507		300		32,119		378
Construction		2,111		26		6,461		100
Residential real estate		685		-		311		-
Consumer installment and other		1,963		7		2,894		18
Total	$	46,995	$	387	$	48,361	$	546

Troubled Debt Restructurings on Financing Receivables [Table Text Block]

	Troubled Debt Restructurings At March 31, 2013
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,172	$	786
Commercial real estate		3		7,383		7,535		-
Total		6	$	8,701	$	8,707	$	786

	Troubled Debt Restructurings At December 31, 2012
	Number of Contracts		Pre-Modification Carrying Value		Period-End Carrying Value		Period-End Individual Impairment Allowance
	(In thousands)
Commercial		3	$	1,318	$	1,196	$	797
Commercial real estate		2		5,391		5,482		-
Total		5	$	6,709	$	6,678	$	797