10-Q/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

________________________________________________________ 

FORM 10-Q/A

(Amendment No. 1)

________________________________________________________ 

(Mark One)

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

For the quarterly period ended September 30, 2011.

¨ 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 0-20288

 ________________________________________________________ 

COLUMBIA BANKING SYSTEM, INC.

(Exact name of issuer as specified in its charter)

 ________________________________________________________ 

Washington	91-1422237
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
1301 “A” Street Tacoma, Washington	98402-2156
(Address of principal executive offices)	(Zip Code)

(253) 305-1900

(Issuer’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

________________________________________________________ 

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  ý    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  ý    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.

Large accelerated filer	ý	Accelerated filer	¨
Non-accelerated filer	¨	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  ý

The number of shares of common stock outstanding at October 31, 2011 was 39,502,313.

1

Explanatory Note

Columbia Bankings System, Inc. (the "Company") is filing this Amendment No. 1 (this “Form 10-Q/A”) to its Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, filed with the Securities and Exchange Commission on November 8, 2011 (the “Form 10-Q”), for the sole purpose of correcting certain technical and formatting errors within its Interactive Data File included in the Form 10-Q filing as Exhibit 101.

No other changes have been made to the Form 10-Q. This Form 10-Q/A continues to speak as of the original filing date of the Form 10-Q, does not reflect events that may have occurred subsequent to the original filing date, and does not modify or update any related disclosures made in the Form 10-Q.

2

Item 6. EXHIBITS

2.1	Purchase and Assumption Agreement - Modified Whole Bank - All Deposits, Among Federal Deposit Insurance Corporation, Receiver of Bank of Whitman, Colfax, Washington, Federal Deposit Insurance Corporation and Columbia State Bank, Tacoma, Washington dated as of August 5, 2011 (1)
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101*	The following financial information from Columbia Banking System, Inc’s. Quarterly Report on Form 10-Q for the quarter ended September 30, 2011 is formatted in XBRL: (i) the Unaudited Consolidated Condensed Statements of Income, (ii) the Unaudited Consolidated Condensed Balance Sheets, (iii) the Unaudited Consolidated Condensed Statements of Changes in Shareholders' Equity, (iv) the Unaudited Consolidated Condensed Statements of Cash Flows, and (v) the Notes to Unaudited Consolidated Condensed Financial Statements.

*    Furnished herewith

(1) Incorporated by reference to Exhibit 2.1 of the Company's Current Report on Form 8-K filed with the SEC on August 11, 2011

3

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this Amendment No. 1 to this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		COLUMBIA BANKING SYSTEM, INC.
Date:	November 15, 2011	By	/s/ MELANIE J. DRESSEL
			Melanie J. Dressel
			President and Chief Executive Officer (Principal Executive Officer)
Date:	November 15, 2011	By	/s/ GARY R. SCHMINKEY
			Gary R. Schminkey
			Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer)

4

INDEX TO EXHIBITS

2.1	Purchase and Assumption Agreement - Modified Whole Bank - All Deposits, Among Federal Deposit Insurance Corporation, Receiver of Bank of Whitman, Colfax, Washington, Federal Deposit Insurance Corporation and Columbia State Bank, Tacoma, Washington dated as of August 5, 2011 (1)
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101*	The following financial information from Columbia Banking System, Inc’s. Quarterly Report on Form 10-Q for the quarter ended September 30, 2011 is formatted in XBRL: (i) the Unaudited Consolidated Condensed Statements of Income, (ii) the Unaudited Consolidated Condensed Balance Sheets, (iii) the Unaudited Consolidated Condensed Statements of Changes in Shareholders' Equity, (iv) the Unaudited Consolidated Condensed Statements of Cash Flows, and (v) the Notes to Unaudited Consolidated Condensed Financial Statements.

*    Furnished herewith

(1) Incorporated by reference to Exhibit 2.1 of the Company's Current Report on Form 8-K filed with the SEC on August 11, 2011

5

XML

Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 54,057	$ 59,748	$ 60,993	$ 53,478
Provision charged to expense	500	9,000	2,650	37,500
Loans charged off	(4,872)	(7,540)	(16,653)	(31,466)
Recoveries	737	1,126	3,432	2,822
Ending balance	50,422	62,334	50,422	62,334
Beginning balance	1,460	815	1,165	775
Net changes in the allowance for unfunded commitments and letters of credit	0	350	295	390
Ending balance	$ 1,460	$ 1,165	$ 1,460	$ 1,165

XML

Consolidated Condensed Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and due from banks	$ 97,432	$ 55,492
Interest-earning deposits with banks	250,030	458,638
Total cash and cash equivalents	347,462	514,130
Securities available for sale at fair value (amortized cost of $954,415 and $743,928, respectively)	995,854	763,866
Federal Home Loan Bank stock at cost	22,215	17,908
Loans held for sale	2,568	754
Loans, excluding covered loans, net of unearned income of ($23,764) and ($3,490), respectively	2,257,899	1,915,754
Less: allowance for loan and lease losses	50,422	60,993
Loans, excluding covered loans, net	2,207,477	1,854,761
Covered loans, net of allowance for loan losses of ($8,324) and ($6,055), respectively	570,805	517,061
Total loans, net	2,778,282	2,371,822
FDIC loss sharing asset	193,869	205,991
Interest receivable	17,428	11,164
Premises and equipment, net	104,974	93,108
Other real estate owned ($24,835 and $14,443 covered by FDIC loss share, respectively)	49,891	45,434
Goodwill	118,434	109,639
Core deposit intangible, net	21,369	18,696
Other assets	103,486	103,851
Total Assets	4,755,832	4,256,363
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing	1,105,169	895,671
Interest-bearing	2,690,330	2,431,598
Total deposits	3,795,499	3,327,269
Federal Home Loan Bank advances	122,642	119,405
Securities sold under agreements to repurchase	25,000	25,000
Other borrowings	0	642
Long-term subordinated debt	0	25,735
Other liabilities	62,725	51,434
Total liabilities	4,005,866	3,549,485
Commitments and contingent liabilities
Shareholders' equity:
Common Stock (no par value)	578,828	576,905
Retained earnings	145,451	117,692
Accumulated other comprehensive income	25,687	12,281
Total shareholders' equity	749,966	706,878
Total Liabilities and Shareholders' Equity	$ 4,755,832	$ 4,256,363

XML

Consolidated Condensed Balance Sheets (Parenthetical) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Securities available-for-sale, amortized cost	$ 954,415	$ 743,928
Unearned income on loans	(23,764)	(3,490)
Allowance for losses on covered loans	(8,327)	(6,055)
Other real estate owned covered by FDIC loss share	$ 24,835	$ 14,443
Common stock, par value
Common stock, shares authorized	63,033	63,033
Common stock, shares issued and outstanding	39,502	39,338

XML

Covered Assets and FDIC Loss-sharing Asset (Analysis and Allowance for Losses on Covered Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Covered Loans	$ 798,125	$ 714,733
Allowance for Loan Losses	8,327	6,055
Valuation discount resulting from acquisition accounting	218,993	191,617
Covered loans, net	570,805	517,061
Commercial Business [Member]
Covered Loans	220,727	165,255
Weighted-Average Risk Rating	6.09	5.74
Allowance for Loan Losses	2,018	2,903
Real Estate One-To-Four Family [Member]
Covered Loans	84,724	68,700
Weighted-Average Risk Rating	5.33	4.77
Allowance for Loan Losses	1,071	1,013
Real Estate Commercial & Multifamily Residential [Member]
Covered Loans	346,406	341,063
Weighted-Average Risk Rating	5.90	5.70
Allowance for Loan Losses	4,293	821
Construction One-To-Four Family Residential[Member]
Covered Loans	55,928	39,754
Weighted-Average Risk Rating	7.40	7.29
Allowance for Loan Losses	205	98
Construction Commercial & Multifamily Residential [Member]
Covered Loans	30,034	41,624
Weighted-Average Risk Rating	7.15	6.79
Allowance for Loan Losses	134	469
Consumer [Member]
Covered Loans	60,306	58,337
Weighted-Average Risk Rating	5.07	4.49
Allowance for Loan Losses	$ 606	$ 751

XML

Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2011 and 2010:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands except per share)	2011		2010		2011		2010
Basic EPS:
Net income	$	18,872	$	5,204	$	33,283	$	18,176
Less: Preferred dividends and accretion of issuance discount for preferred stock	—		(2,730)		—		(4,947)
Net income applicable to common shareholders	$	18,872	$	2,474	$	33,283	$	13,229
Less: Earnings allocated to participating securities	(177)		(22)		(311)		(127)
Earnings allocated to common shareholders	$	18,695	$	2,452	$	32,972	$	13,102
Weighted average common shares outstanding	39,131		38,976		39,092		33,938
Basic earnings per common share	$	0.48	$	0.06	$	0.84	$	0.39
Diluted EPS:
Earnings allocated to common shareholders	$	18,695	$	2,452	$	32,972	$	13,102
Weighted average common shares outstanding	39,131		38,976		39,092		33,938
Dilutive effect of equity awards and warrants	61		161		75		204
Weighted average diluted common shares outstanding	39,192		39,137		39,167		34,142
Diluted earnings per common share	$	0.48	$	0.06	$	0.84	$	0.38
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	75		62		62		54

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2011	Oct. 31, 2011
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	true
Amendment Description	Resubmit Interactive Data files for the sole purpose of correcting certain technical and formatting errors.
Document Period End Date	Sep. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Entity Registrant Name	COLUMBIA BANKING SYSTEM INC
Entity Central Index Key	0000887343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		39,502,313

XML

Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit (Narrative) (Details)	9 Months Ended
	Sep. 30, 2011
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Percentage of unallocated loan amount	5.00%

XML

Noncovered Loans (Tables)

9 Months Ended

Sep. 30, 2011

Noncovered Loans [Abstract]

Analysis of Loan Portfolio by Major Types of Loans

The following is an analysis of the noncovered loan portfolio by major types of loans (net of unearned income):

(in thousands)	September 30, 2011			December 31, 2010
Noncovered loans:
Commercial Business	$	983,820		$	795,369
Real Estate:
One-to-four family residential	64,535			49,383
Commercial and multifamily residential	977,173			794,329
Total Real Estate	1,041,708			843,712
Real Estate Construction:
One-to-four family residential	52,287			67,961
Commercial and multifamily residential	27,181			30,185
Total Real Estate Construction	79,468			98,146
Consumer	176,667			182,017
Less: Net unearned income	(23,764		)	(3,490		)
Total noncovered loans, net of unearned income	2,257,899			1,915,754
Less: Allowance for loan and lease losses	(50,422		)	(60,993		)
Total noncovered loans, net	$	2,207,477		$	1,854,761
Loans held for sale	$	2,568		$	754

At September 30, 2011 and December 31, 2010, the Company had no loans to foreign domiciled businesses or foreign countries, or loans related to highly leveraged transactions. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington and Oregon.

The Company and its banking subsidiary have granted loans to officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $9.5 million and $12.9 million at September 30, 2011 and December 31, 2010, respectively. During the first nine months of 2011, advances on related party loans were $3.1 million and repayments totaled $6.5 million.

At September 30, 2011 and December 31, 2010, $401.6 million and $426.6 million of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank borrowings.

The following is an analysis of noncovered, nonaccrual loans as of September 30, 2011 and December 31, 2010:

	September 30, 2011				December 31, 2010
(in thousands)	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
Commercial Business
Secured	$	9,594	$	18,025	$	32,368	$	44,316
Unsecured	301		1,244		—		327
Real Estate:
One-to-four family residential	2,157		2,514		2,999		3,353
Commercial & multifamily residential
Commercial land	3,872		7,355		4,093		6,279
Income property multifamily	7,135		9,740		11,716		12,737
Owner occupied	9,845		10,908		7,407		8,990
Real Estate Construction:
One-to-four family residential
Land and acquisition	7,817		15,952		11,608		21,344
Residential construction	3,164		4,691		6,503		11,547
Commercial & multifamily residential
Income property multifamily	7,622		14,963		7,585		12,916
Owner occupied	—		—		—		—
Consumer	3,545		4,390		5,022		5,192
Total	$	55,052	$	89,782	$	89,301	$	127,001

The following is an analysis of the recorded investment of the aged loan portfolio as of September 30, 2011 and December 31, 2010:

(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2011
Commercial Business
Secured	$	905,270	$	847	$	579	$	—	$	1,426	$	9,594	$	916,290
Unsecured	57,118		1,359		58		—		1,417		301		58,836
Real Estate:
One-to-four family residential	61,073		239		204		—		443		2,157		63,673
Commercial & multifamily residential
Commercial land	44,260		—		—		—		—		3,872		48,132
Income property multifamily	519,034		352		10		—		362		7,135		526,531
Owner occupied	378,541		2,488		931		—		3,419		9,845		391,805
Real Estate Construction:
One-to-four family residential
Land and acquisition	16,640		1,084		436		—		1,520		7,817		25,977
Residential construction	22,781		—		—		—		—		3,164		25,945
Commercial & multifamily residential
Income property multifamily	5,168		1,011		—		—		1,011		7,622		13,801
Owner occupied	10,358		—		—		—		—		—		10,358
Consumer	172,094		465		447		—		912		3,545		176,551
Total	$	2,192,337	$	7,845	$	2,665	$	—	$	10,510	$	55,052	$	2,257,899
(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2010
Commercial Business
Secured	$	720,926	$	919	$	692	$	1	$	1,612	$	31,919	$	754,457
Unsecured	40,455		9		—		—		9		448		40,912
Real Estate:
One-to-four family residential	46,167		220		—		—		220		2,996		49,383
Commercial & multifamily residential
Commercial land	18,979		—		1,752		—		1,752		4,091		24,822
Income property multifamily	426,320		1,208		121		—		1,329		10,745		438,394
Owner occupied	318,508		497		3,752		—		4,249		8,356		331,113
Real Estate Construction:
One-to-four family residential
Land and acquisition	24,883		214		205		—		419		11,604		36,906
Residential construction	24,655		—		—		—		—		6,400		31,055
Commercial & multifamily residential
Income property multifamily	10,666		—		—		—		—		7,584		18,250
Owner occupied	11,935		—		—		—		—		—		11,935
Consumer	176,005		397		595		—		992		5,020		182,017
Total	$	1,819,499	$	3,464	$	7,117	$	1	$	10,582	$	89,163	$	1,919,244

Analysis of Nonaccrual Loans

The following is an analysis of noncovered, nonaccrual loans as of September 30, 2011 and December 31, 2010:

	September 30, 2011				December 31, 2010
(in thousands)	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
Commercial Business
Secured	$	9,594	$	18,025	$	32,368	$	44,316
Unsecured	301		1,244		—		327
Real Estate:
One-to-four family residential	2,157		2,514		2,999		3,353
Commercial & multifamily residential
Commercial land	3,872		7,355		4,093		6,279
Income property multifamily	7,135		9,740		11,716		12,737
Owner occupied	9,845		10,908		7,407		8,990
Real Estate Construction:
One-to-four family residential
Land and acquisition	7,817		15,952		11,608		21,344
Residential construction	3,164		4,691		6,503		11,547
Commercial & multifamily residential
Income property multifamily	7,622		14,963		7,585		12,916
Owner occupied	—		—		—		—
Consumer	3,545		4,390		5,022		5,192
Total	$	55,052	$	89,782	$	89,301	$	127,001

Analysis of the Aged Loan Portfolio

The following is an analysis of the recorded investment of the aged loan portfolio as of September 30, 2011 and December 31, 2010:

(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2011
Commercial Business
Secured	$	905,270	$	847	$	579	$	—	$	1,426	$	9,594	$	916,290
Unsecured	57,118		1,359		58		—		1,417		301		58,836
Real Estate:
One-to-four family residential	61,073		239		204		—		443		2,157		63,673
Commercial & multifamily residential
Commercial land	44,260		—		—		—		—		3,872		48,132
Income property multifamily	519,034		352		10		—		362		7,135		526,531
Owner occupied	378,541		2,488		931		—		3,419		9,845		391,805
Real Estate Construction:
One-to-four family residential
Land and acquisition	16,640		1,084		436		—		1,520		7,817		25,977
Residential construction	22,781		—		—		—		—		3,164		25,945
Commercial & multifamily residential
Income property multifamily	5,168		1,011		—		—		1,011		7,622		13,801
Owner occupied	10,358		—		—		—		—		—		10,358
Consumer	172,094		465		447		—		912		3,545		176,551
Total	$	2,192,337	$	7,845	$	2,665	$	—	$	10,510	$	55,052	$	2,257,899
(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2010
Commercial Business
Secured	$	720,926	$	919	$	692	$	1	$	1,612	$	31,919	$	754,457
Unsecured	40,455		9		—		—		9		448		40,912
Real Estate:
One-to-four family residential	46,167		220		—		—		220		2,996		49,383
Commercial & multifamily residential
Commercial land	18,979		—		1,752		—		1,752		4,091		24,822
Income property multifamily	426,320		1,208		121		—		1,329		10,745		438,394
Owner occupied	318,508		497		3,752		—		4,249		8,356		331,113
Real Estate Construction:
One-to-four family residential
Land and acquisition	24,883		214		205		—		419		11,604		36,906
Residential construction	24,655		—		—		—		—		6,400		31,055
Commercial & multifamily residential
Income property multifamily	10,666		—		—		—		—		7,584		18,250
Owner occupied	11,935		—		—		—		—		—		11,935
Consumer	176,005		397		595		—		992		5,020		182,017
Total	$	1,819,499	$	3,464	$	7,117	$	1	$	10,582	$	89,163	$	1,919,244

Analysis of Impaired Loans

The following is an analysis of impaired loans as of September 30, 2011 and December 31, 2010:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance				Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
(in thousands)					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
September 30, 2011
Commercial Business
Secured	$	908,699	$	7,591	$	273	$	273	$	54	$	7,318	$	14,810	$	17,251	$	16
Unsecured	58,548		288		—		—		—		288		609		148		—
Real Estate:
One-to-four family residential	61,629		2,044		—		—		—		2,044		2,283		2,498		—
Commercial & multifamily residential
Commercial land	44,316		3,816		—		—		—		3,816		6,781		4,380		—
Income property multifamily	519,745		6,786		2,588		3,512		297		4,198		5,673		9,444		526
Owner occupied	376,391		15,414		1,528		2,186		408		13,886		16,616		15,427		298
Real Estate Construction:
One-to-four family residential
Land and acquisition	17,550		8,427		1,216		1,813		175		7,211		12,210		9,368		176
Residential construction	20,830		5,115		—		—		—		5,115		6,563		4,397		—
Commercial & multifamily residential
Income property multifamily	6,178		7,623		—		—		—		7,623		14,963		7,064		—
Owner occupied	10,358		—		—		—		—		—		—		—		—
Consumer	174,059		2,492		154		226		32		2,338		2,832		4,276		13
Total	$	2,198,303	$	59,596	$	5,759	$	8,010	$	966	$	53,837	$	83,340	$	74,253	$	1,029
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
(in thousands)					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2010
Commercial Business
Secured	$	724,665	$	29,793	$	2,717	$	2,758	$	600	$	27,081	$	26,913
Unsecured	40,808		104		75		75		75		29		30
Real Estate:
One-to-four family residential	46,728		2,655		—		—		—		2,658		2,949
Commercial & multifamily residential
Commercial land	20,959		3,863		3,062		5,225		—		804		826
Income property multifamily	427,799		10,595		3,094		3,139		59		10,292		12,253
Owner occupied	317,010		14,103		—		—		—		14,152		17,099
Real Estate Construction:
One-to-four family residential
Land and acquisition	25,362		11,543		533		549		3		11,013		20,718
Residential construction	24,655		6,400		915		1,723		62		5,585		9,824
Commercial & multifamily residential
Income property multifamily	10,666		7,584		6,792		10,515		175		792		2,401
Owner occupied	11,935		—		—		—		—		—		—
Consumer	177,484		4,533		—		—		—		4,533		4,691
Total	$	1,828,071	$	91,173	$	17,188	$	23,984	$	974	$	76,939	$	97,704

Analysis of loans classified as Troubled Debt Restructurings (“TDR”)

The following is an analysis of loans classified as Troubled Debt Restructurings ("TDR") during the three months ended September 30, 2011:

(in thousands except number of modifications)	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Commercial Business
Secured	1	$	226	$	226
Total	1	$	226	$	226

The following is an analysis of loans classified as Troubled Debt Restructurings during the nine months ended September 30, 2011:

(in thousands except number of modifications)	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Commercial Business
Secured	3	$	578	$	578
Real Estate: Commercial & multifamily residential
Income Property Multifamily	1	623		623
Real Estate Construction: One-to-four family residential
Residential Construction	1	36		36
Total	5	$	1,237	$	1,237

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Noncovered Loans Noncovered Loans (Analysis of Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2011 Modifications	Sep. 30, 2011 Modifications
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications	1	5
Pre-Modification Outstanding Recorded Investment	$ 226	$ 1,237
Post-Modification Outstanding Recorded Investment	226	1,237
Secured Debt [Member] | Commercial Business [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications	1	3
Pre-Modification Outstanding Recorded Investment	226	578
Post-Modification Outstanding Recorded Investment	226	578
Income Property Multifamily [Member] | Real Estate Commercial & Multifamily Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications		1
Pre-Modification Outstanding Recorded Investment		623
Post-Modification Outstanding Recorded Investment		623
Residential Construction [Member] | Construction One-To-Four Family Residential[Member]
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications		1
Pre-Modification Outstanding Recorded Investment		36
Post-Modification Outstanding Recorded Investment		$ 36

XML

Noncovered Loans

9 Months Ended

Sep. 30, 2011

Noncovered Loans [Abstract]

Noncovered Loans

Noncovered Loans

Noncovered loans include loans originated through our branch network and loan departments as well as acquired loans, including discounted loans, that are not subject to FDIC loss share, including the loans acquired in the Bank of Whitman transaction described in Note 4.

The following is an analysis of the noncovered loan portfolio by major types of loans (net of unearned income):

(in thousands)	September 30, 2011			December 31, 2010
Noncovered loans:
Commercial Business	$	983,820		$	795,369
Real Estate:
One-to-four family residential	64,535			49,383
Commercial and multifamily residential	977,173			794,329
Total Real Estate	1,041,708			843,712
Real Estate Construction:
One-to-four family residential	52,287			67,961
Commercial and multifamily residential	27,181			30,185
Total Real Estate Construction	79,468			98,146
Consumer	176,667			182,017
Less: Net unearned income	(23,764		)	(3,490		)
Total noncovered loans, net of unearned income	2,257,899			1,915,754
Less: Allowance for loan and lease losses	(50,422		)	(60,993		)
Total noncovered loans, net	$	2,207,477		$	1,854,761
Loans held for sale	$	2,568		$	754

At September 30, 2011 and December 31, 2010, the Company had no loans to foreign domiciled businesses or foreign countries, or loans related to highly leveraged transactions. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington and Oregon.

The Company and its banking subsidiary have granted loans to officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $9.5 million and $12.9 million at September 30, 2011 and December 31, 2010, respectively. During the first nine months of 2011, advances on related party loans were $3.1 million and repayments totaled $6.5 million.

At September 30, 2011 and December 31, 2010, $401.6 million and $426.6 million of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank borrowings.

The following is an analysis of noncovered, nonaccrual loans as of September 30, 2011 and December 31, 2010:

	September 30, 2011				December 31, 2010
(in thousands)	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
Commercial Business
Secured	$	9,594	$	18,025	$	32,368	$	44,316
Unsecured	301		1,244		—		327
Real Estate:
One-to-four family residential	2,157		2,514		2,999		3,353
Commercial & multifamily residential
Commercial land	3,872		7,355		4,093		6,279
Income property multifamily	7,135		9,740		11,716		12,737
Owner occupied	9,845		10,908		7,407		8,990
Real Estate Construction:
One-to-four family residential
Land and acquisition	7,817		15,952		11,608		21,344
Residential construction	3,164		4,691		6,503		11,547
Commercial & multifamily residential
Income property multifamily	7,622		14,963		7,585		12,916
Owner occupied	—		—		—		—
Consumer	3,545		4,390		5,022		5,192
Total	$	55,052	$	89,782	$	89,301	$	127,001

The following is an analysis of the recorded investment of the aged loan portfolio as of September 30, 2011 and December 31, 2010:

(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2011
Commercial Business
Secured	$	905,270	$	847	$	579	$	—	$	1,426	$	9,594	$	916,290
Unsecured	57,118		1,359		58		—		1,417		301		58,836
Real Estate:
One-to-four family residential	61,073		239		204		—		443		2,157		63,673
Commercial & multifamily residential
Commercial land	44,260		—		—		—		—		3,872		48,132
Income property multifamily	519,034		352		10		—		362		7,135		526,531
Owner occupied	378,541		2,488		931		—		3,419		9,845		391,805
Real Estate Construction:
One-to-four family residential
Land and acquisition	16,640		1,084		436		—		1,520		7,817		25,977
Residential construction	22,781		—		—		—		—		3,164		25,945
Commercial & multifamily residential
Income property multifamily	5,168		1,011		—		—		1,011		7,622		13,801
Owner occupied	10,358		—		—		—		—		—		10,358
Consumer	172,094		465		447		—		912		3,545		176,551
Total	$	2,192,337	$	7,845	$	2,665	$	—	$	10,510	$	55,052	$	2,257,899
(in thousands)	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2010
Commercial Business
Secured	$	720,926	$	919	$	692	$	1	$	1,612	$	31,919	$	754,457
Unsecured	40,455		9		—		—		9		448		40,912
Real Estate:
One-to-four family residential	46,167		220		—		—		220		2,996		49,383
Commercial & multifamily residential
Commercial land	18,979		—		1,752		—		1,752		4,091		24,822
Income property multifamily	426,320		1,208		121		—		1,329		10,745		438,394
Owner occupied	318,508		497		3,752		—		4,249		8,356		331,113
Real Estate Construction:
One-to-four family residential
Land and acquisition	24,883		214		205		—		419		11,604		36,906
Residential construction	24,655		—		—		—		—		6,400		31,055
Commercial & multifamily residential
Income property multifamily	10,666		—		—		—		—		7,584		18,250
Owner occupied	11,935		—		—		—		—		—		11,935
Consumer	176,005		397		595		—		992		5,020		182,017
Total	$	1,819,499	$	3,464	$	7,117	$	1	$	10,582	$	89,163	$	1,919,244

The following is an analysis of impaired loans as of September 30, 2011 and December 31, 2010:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance				Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
(in thousands)					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
September 30, 2011
Commercial Business
Secured	$	908,699	$	7,591	$	273	$	273	$	54	$	7,318	$	14,810	$	17,251	$	16
Unsecured	58,548		288		—		—		—		288		609		148		—
Real Estate:
One-to-four family residential	61,629		2,044		—		—		—		2,044		2,283		2,498		—
Commercial & multifamily residential
Commercial land	44,316		3,816		—		—		—		3,816		6,781		4,380		—
Income property multifamily	519,745		6,786		2,588		3,512		297		4,198		5,673		9,444		526
Owner occupied	376,391		15,414		1,528		2,186		408		13,886		16,616		15,427		298
Real Estate Construction:
One-to-four family residential
Land and acquisition	17,550		8,427		1,216		1,813		175		7,211		12,210		9,368		176
Residential construction	20,830		5,115		—		—		—		5,115		6,563		4,397		—
Commercial & multifamily residential
Income property multifamily	6,178		7,623		—		—		—		7,623		14,963		7,064		—
Owner occupied	10,358		—		—		—		—		—		—		—		—
Consumer	174,059		2,492		154		226		32		2,338		2,832		4,276		13
Total	$	2,198,303	$	59,596	$	5,759	$	8,010	$	966	$	53,837	$	83,340	$	74,253	$	1,029
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
(in thousands)					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2010
Commercial Business
Secured	$	724,665	$	29,793	$	2,717	$	2,758	$	600	$	27,081	$	26,913
Unsecured	40,808		104		75		75		75		29		30
Real Estate:
One-to-four family residential	46,728		2,655		—		—		—		2,658		2,949
Commercial & multifamily residential
Commercial land	20,959		3,863		3,062		5,225		—		804		826
Income property multifamily	427,799		10,595		3,094		3,139		59		10,292		12,253
Owner occupied	317,010		14,103		—		—		—		14,152		17,099
Real Estate Construction:
One-to-four family residential
Land and acquisition	25,362		11,543		533		549		3		11,013		20,718
Residential construction	24,655		6,400		915		1,723		62		5,585		9,824
Commercial & multifamily residential
Income property multifamily	10,666		7,584		6,792		10,515		175		792		2,401
Owner occupied	11,935		—		—		—		—		—		—
Consumer	177,484		4,533		—		—		—		4,533		4,691
Total	$	1,828,071	$	91,173	$	17,188	$	23,984	$	974	$	76,939	$	97,704

The following is an analysis of loans classified as Troubled Debt Restructurings ("TDR") during the three months ended September 30, 2011:

(in thousands except number of modifications)	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Commercial Business
Secured	1	$	226	$	226
Total	1	$	226	$	226

The following is an analysis of loans classified as Troubled Debt Restructurings during the nine months ended September 30, 2011:

(in thousands except number of modifications)	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Commercial Business
Secured	3	$	578	$	578
Real Estate: Commercial & multifamily residential
Income Property Multifamily	1	623		623
Real Estate Construction: One-to-four family residential
Residential Construction	1	36		36
Total	5	$	1,237	$	1,237

The Company's loans classified as TDR are loans that have been modified or the borrower has been granted special concessions due to financial difficulties, that if not for the challenges of the borrower, the Company would not otherwise consider. The Company had commitments to lend $2.4 million of additional funds on loans classified as TDR as of September 30, 2011. The TDR modifications or concessions are made to increase the likelihood these borrowers with financial difficulties will be able to satisfy their debt obligations as amended. Credit losses for loans classified as TDR are measured the same as impaired loans. For impaired loans, an allowance is established when the collateral value (or discounted cash flows or observable market price) of the impaired loan is lower than the recorded investment of that loan.The Company did not have any loans modified as TDR within the past twelve months that have defaulted during the nine months ended September 30, 2011.

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Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit (Tables)

9 Months Ended

Sep. 30, 2011

Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit

Allowance for Noncovered Loan and Lease Losses

The following table shows a detailed analysis of the allowance for loan and lease losses for noncovered loans as of the three and nine months ended September 30, 2011:

(in thousands)	Beginning Balance		Charge-offs			Recoveries		Provision			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2011
Commercial Business
Secured	$	22,320	$	(1,904	)	$	420	$	2,462		$	23,298	$	54	$	23,244
Unsecured	573		(42		)	40		167			738		—		738
Real Estate:
One-to-four family residential	847		(53		)	78		70			942		—		942
Commercial & multifamily residential
Commercial land	894		(4		)	—		(130		)	760		—		760
Income property multifamily	14,709		(339		)	10		(5,407		)	8,973		297		8,676
Owner occupied	6,479		(100		)	—		311			6,690		408		6,282
Real Estate Construction:
One-to-four family residential
Land and acquisition	2,852		(169		)	63		269			3,015		175		2,840
Residential construction	1,704		(14		)	56		(222		)	1,524		—		1,524
Commercial & multifamily residential
Income property multifamily	43		(145		)	—		157			55		—		55
Owner occupied	34		—			—		(7		)	27		—		27
Consumer	2,748		(2,102		)	70		2,985			3,701		32		3,669
Unallocated	854		—			—		(155		)	699		—		699
Total	$	54,057	$	(4,872	)	$	737	$	500		$	50,422	$	966	$	49,456
(in thousands)	Beginning Balance		Charge-offs			Recoveries		Provision			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2011
Commercial Business
Secured	$	21,811	$	(6,025	)	$	749	$	6,763		$	23,298	$	54	$	23,244
Unsecured	738		(126		)	408		(282		)	738		—		738
Real Estate:
One-to-four family residential	1,100		(717		)	78		481			942		—		942
Commercial & multifamily residential
Commercial land	634		(660		)	—		786			760		—		760
Income property multifamily	15,210		(979		)	65		(5,323		)	8,973		297		8,676
Owner occupied	9,692		(723		)	31		(2,310		)	6,690		408		6,282
Real Estate Construction:
One-to-four family residential
Land and acquisition	3,769		(1,347		)	1,831		(1,238		)	3,015		175		2,840
Residential construction	2,292		(1,068		)	92		208			1,524		—		1,524
Commercial & multifamily residential
Income property multifamily	274		(1,710		)	—		1,491			55		—		55
Owner occupied	70		—			—		(43		)	27		—		27
Consumer	2,120		(3,298		)	178		4,701			3,701		32		3,669
Unallocated	3,283		—			—		(2,584		)	699		—		699
Total	$	60,993	$	(16,653	)	$	3,432	$	2,650		$	50,422	$	966	$	49,456

Changes in the Allowance for Loan and Lease Losses

The three and nine months changes as of September 30, 2011 and 2010 are summarized as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2011			2010			2011			2010
Beginning balance	$	54,057		$	59,748		$	60,993		$	53,478
Provision charged to expense	500			9,000			2,650			37,500
Loans charged off	(4,872		)	(7,540		)	(16,653		)	(31,466		)
Recoveries	737			1,126			3,432			2,822
Ending balance	$	50,422		$	62,334		$	50,422		$	62,334

Changes in the Allowance for Unfunded Commitments and Letters of Credit

Changes in the allowance for unfunded commitments and letters of credit are summarized as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands)	2011		2010		2011		2010
Beginning balance	$	1,460	$	815	$	1,165	$	775
Net changes in the allowance for unfunded commitments and letters of credit	—		350		295		390
Ending balance	$	1,460	$	1,165	$	1,460	$	1,165

Analysis of Credit Quality of Noncovered Loan Portfolio

The following is an analysis of the credit quality of our noncovered loan portfolio as of September 30, 2011 and December 31, 2010:

	September 30, 2011:			December 31, 2010:
(dollars in thousands)	Weighted- Average Risk Rating	Recorded Investment Noncovered Loans		Weighted- Average Risk Rating	Recorded Investment Noncovered Loans
Commercial Business
Secured	4.95	$	916,290	4.96	$	757,372
Unsecured	4.25	58,836		4.23	41,175
Real Estate:
One-to-four family residential	4.91	63,672		4.96	49,436
Commercial & multifamily residential
Commercial land	5.64	48,132		5.75	24,956
Income property multifamily	4.98	526,531		5.07	406,711
Owner occupied	5.08	391,804		5.12	366,284
Real Estate Construction:
One-to-four family residential
Land and acquisition	6.61	25,978		6.79	37,054
Residential construction	6.07	25,945		6.63	31,293
Commercial & multifamily residential
Income property multifamily	5.39	13,801		6.38	18,296
Owner occupied	4.45	10,358		4.93	11,990
Consumer	4.27	176,552		4.31	182,624
Total recorded investment of noncovered loans		$	2,257,899		$	1,927,191

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Noncovered Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) (USD $) In Thousands	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2009
Commercial Business	$ 983,820		$ 795,369
Total Real Estate	1,041,708		843,712
Total Real Estate Construction	79,468		98,146
Consumer	176,667		182,017
Less: Net unearned income	(23,764)		(3,490)
Total noncovered loans, net of unearned income	2,257,899		1,915,754
Less: Allowance for loan and lease losses	(50,422)	(54,057)	(60,993)	(62,334)	(59,748)	(53,478)
Total noncovered loans, net	2,207,477		1,854,761
Loans held for sale	2,568		754
One-to-Four Family Residential [Member]
Real Estate	64,535		49,383
Real Estate Construction	52,287		67,961
Commercial and Multifamily Residential [Member]
Real Estate	977,173		794,329
Real Estate Construction	$ 27,181		$ 30,185

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Securities (Securities Available for Sale) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Amortized Cost	$ 954,415	$ 743,928
Gross Unrealized Gains	42,487	23,386
Gross Unrealized Losses	(1,048)	(3,448)
Fair Value	995,854	763,866
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Amortized Cost	623,934	491,530
Gross Unrealized Gains	21,698	16,139
Gross Unrealized Losses	(906)	(1,027)
Fair Value	644,726	506,642
State and Municipal Securities [Member]
Amortized Cost	256,343	249,117
Gross Unrealized Gains	20,189	7,247
Gross Unrealized Losses	(115)	(2,383)
Fair Value	276,417	253,981
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Amortized Cost	70,857
Gross Unrealized Gains	523
Gross Unrealized Losses	0
Fair Value	71,380
Other Securities [Member]
Amortized Cost	3,281	3,281
Gross Unrealized Gains	77	0
Gross Unrealized Losses	(27)	(38)
Fair Value	$ 3,331	$ 3,243

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Securities (Tables)

9 Months Ended

Sep. 30, 2011

Available-for-sale Securities [Abstract]

Securities Available for Sale

The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2011:
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	623,934	$	21,698	$	(906	)	$	644,726
State and municipal securities	256,343		20,189		(115		)	276,417
U.S. government and government-sponsored enterprise securities	70,857		523		—			71,380
Other securities	3,281		77		(27		)	3,331
Total	$	954,415	$	42,487	$	(1,048	)	$	995,854
December 31, 2010:
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	491,530	$	16,139	$	(1,027	)	$	506,642
State and municipal securities	249,117		7,247		(2,383		)	253,981
Other securities	3,281		—		(38		)	3,243
Total	$	743,928	$	23,386	$	(3,448	)	$	763,866

Schedule of Contractual Maturities of Investment Securities Available for Sale

The scheduled contractual maturities of investment securities available for sale at September 30, 2011 are presented as follows:

	September 30, 2011
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	43,868	$	44,136
Due after one year through five years	91,742		94,242
Due after five years through ten years	168,119		176,815
Due after ten years	647,405		677,330
Total investment securities available-for-sale	$	951,134	$	992,523

Carrying Value of Securities Pledged As Collateral

The following table summarizes, as of September 30, 2011, the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:

(in thousands)	Carrying Amount
To Washington and Oregon State to secure public deposits	$	237,671
To Federal Home Loan Bank to secure advances	95,139
To Federal Reserve Bank to secure borrowings	55,947
Other securities pledged	50,080
Total securities pledged as collateral	$	438,837

Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses

The following tables show the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2011 and December 31, 2010:

September 30, 2011
	Less than 12 Months					12 Months or More					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	119,998	$	(905	)	$	275	$	(1	)	$	120,273	(906		)
State and municipal securities	11,558		(97		)	1,204		(18		)	12,762		(115		)
U.S. government and government-sponsored enterprise securities	100		—			—		—			100		—
Other securities	—		—			973		(27		)	973		(27		)
Total	$	131,656	$	(1,002	)	$	2,452	$	(46	)	$	134,108	$	(1,048	)
December 31, 2010
	Less than 12 Months					12 Months or More					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	86,529	$	(1,025	)	$	588	$	(2	)	$	87,117	$	(1,027	)
State and municipal securities	74,755		(2,099		)	2,792		(284		)	77,547		(2,383		)
Other securities	2,275		(6		)	968		(32		)	3,243		(38		)
Total	$	163,559	$	(3,130	)	$	4,348	$	(318	)	$	167,907	$	(3,448	)

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Shareholders' Equity

9 Months Ended

Sep. 30, 2011

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

Common Stock.On February 3, 2011, the Company declared a quarterly cash dividend of $0.03 per share, payable on March 3, 2011 to shareholders of record as of the close of business on February 17, 2011. On April 27, 2011 the Company declared a quarterly cash dividend of $0.05 per share, payable on May 25, 2011 to shareholders of record at the close of business May 11, 2011. On July 28, 2011 the Company declared a quarterly cash dividend of $0.06 per share, payable on August 24, 2011 to shareholders of record at the close of business August 10, 2011. The payment of cash dividends is subject to Federal regulatory requirements for capital levels and other restrictions. In addition, the cash dividends paid by Columbia Bank to the Company are subject to both Federal and State regulatory requirements. Subsequent to quarter end, on October 27, 2011 the Company declared a quarterly cash dividend of $0.08 per share and a special, one time cash dividend of $0.05 per share, both payable on November 23, 2011 to shareholders of record at the close of business November 9, 2011.

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Accounting Pronouncements Recently Issued

9 Months Ended

Sep. 30, 2011

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Description of New Accounting Pronouncements Not yet Adopted [Text Block]

Accounting Pronouncements Recently Issued

In April 2011, the FASB issued Accounting Standards Update ("ASU") 2011-03, Reconsideration of Effective Control for Repurchase Agreements (Topic 860). ASU 2011-03 attempts to improve the accounting for repurchase agreements and other agreements that both entitle and obligate a transferor to repurchase or redeem financial assets before maturity. The effective date of ASU 2011-03 will be the first interim or annual period beginning after December 15, 2011 and should be applied prospectively to transactions or modifications of existing transactions that occur on or after the effective date. Early adoption is not permitted. The Company is evaluating the impact this ASU will have on its financial condition and results of operations.

In April 2011, the Financial Accounting Standards Board issued ASU 2011-02, A Creditor's Determination of Whether a Restructuring is a Troubled Debt Restructuring (Topic 310). ASU 2011-02 clarifies the criteria for a restructuring to be classified as a Troubled Debt Restructuring ("TDR"). The Company adopted this ASU during the current period as well as the related disclosure requirements which were included in ASU 2010-20, Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit Losses (Topic 310). Adoption of this ASU had no impact on the Company's financial condition or results of operations. See Note 6 for expanded disclosure requirements related to TDR.

In May 2011, the FASB issued ASU 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. Generally Accepted Accounting Principles (“GAAP”) and International Financial Reporting Standards (“IFRS”) (Topic 820). ASU 2011-04 developed common requirements between GAAP and IFRS for measuring fair value and for disclosing information about fair value measurements. The effective date of ASU 2011-04 will be during interim or annual period beginning after December 15, 2011 and should be applied prospectively to transactions or modifications of existing transactions that occur on or after the effective date. Early adoption is not permitted. The Company is evaluating the impact this ASU will have on its financial condition and results of operations.

In June 2011, the FASB issued ASU 2011-05, Presentation of Comprehensive Income (Topic 220). ASU 2011-05 attempts to improve the comparability, consistency, and transparency of financial reporting and to increase the prominence of items reported in other comprehensive income. The effective date of ASU 2011-05 will be the first interim or fiscal period beginning after December 15, 2011 and should be applied retrospectively. Early adoption is permitted. The Company will apply the disclosure requirements of ASU 2011-05 for its first interim period beginning after December 15, 2011.

In September 2011, the FASB issued ASU 2011-08, Testing Goodwill for Impairment (Topic 350). ASU 2011-08 permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. ASU 2011-08 is effective for interim and annual periods beginning after December 15, 2011. Early adoption is permitted. This ASU, which the Company adopted during the third quarter of 2011, did not have any impact on the Company's consolidated financial statements.

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Earnings Per Common Share (Schedule of Basic and Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Earnings Per Share [Abstract]
Net income	$ 18,872	$ 5,204	$ 33,283	$ 18,176
Less: Preferred dividends and accretion of issuance discount for preferred stock	0	(2,730)	0	(4,947)
Net income applicable to common shareholders	18,872	2,474	33,283	13,229
Less: Earnings allocated to participating securities	(177)	(22)	(311)	(127)
Earnings allocated to common shareholders, Basic	18,695	2,452	32,972	13,102
Weighted average common shares outstanding	39,131	38,976	39,092	33,938
Basic earnings per common share	$ 0.48	$ 0.06	$ 0.84	$ 0.39
Earnings allocated to common shareholders, Diluted	18,695	2,452	32,972	13,102
Weighted average common shares outstanding	39,131	38,976	39,092	33,938
Dilutive effect of equity awards and warrants	$ 61	$ 161	$ 75	$ 204
Weighted average diluted common shares outstanding	39,192	39,137	39,167	34,142
Diluted earnings per common share	$ 0.48	$ 0.06	$ 0.84	$ 0.38
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	75	62	62	54

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Covered Assets and FDIC Loss-sharing Asset

9 Months Ended

Sep. 30, 2011

Covered Assets And FDIC Loss Sharing Asset

Covered Assets and FDIC Loss sharing Asset

Covered Assets and FDIC Loss-sharing Asset

Covered Assets

Covered assets consist of loans and OREO acquired in FDIC assisted acquisitions during 2010 and 2011, for which the Bank entered into loss-sharing agreements, whereby the FDIC will cover a substantial portion of any future losses on loans (and related unfunded loan commitments), OREO and certain accrued interest on loans. Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries up to specified amounts and, with respect to loss-sharing agreements for two acquisitions completed in 2010, will absorb 95% of losses and share in 95% of loss recoveries thereafter. The loss-sharing provisions of the agreements for commercial and single-family mortgage loans are in effect for five and ten years, respectively, from the acquisition dates and the loss recovery provisions are in effect for eight and ten years, respectively, from the acquisition dates.

Ten years and forty-five days after the acquisition dates, the Bank shall pay to the FDIC a clawback in the event the losses from the acquisitions fail to reach stated levels. This clawback shall be in the amount of 50% of the excess, if any, of 20% of the stated threshold amounts, less the sum of 25% of the asset premium (discount), 20% or 25% of the cumulative loss-sharing payments (depending on the particular agreement), and the cumulative servicing amount. As of September 30, 2011, the net present value of the Bank’s estimated clawback liability is $3.3 million, which is included in other liabilities on the consolidated condensed financial statements.

The following is an analysis of our covered loans, net of related allowance for losses on covered loans as of September 30, 2011 and December 31, 2010:

(dollars in thousands)	Covered Loans September 30, 2011		Weighted- Average Risk Rating	Allowance for Loan Losses
Commercial Business	$	220,727	6.09	$	2,018
Real Estate:
One-to-four family residential	84,724		5.33	1,071
Commercial and multifamily residential	346,406		5.90	4,293
Total Real Estate	431,130			5,364
Real Estate Construction:
One-to-four family residential	55,928		7.40	205
Commercial and multifamily residential	30,034		7.15	134
Total Real Estate Construction	85,962			339
Consumer	60,306		5.07	606
Subtotal of covered loans	798,125			$	8,327
Less:
Valuation discount resulting from acquisition accounting	218,993
Allowance for loan losses	8,327
Covered loans, net of valuation discounts and allowance for loan losses	$	570,805
(dollars in thousands)	Covered Loans December 31, 2010		Weighted- Average Risk Rating	Allowance for Loan Losses
Commercial Business	$	165,255	5.74	$	2,903
Real Estate:
One-to-four family residential	68,700		4.77	1,013
Commercial and multifamily residential	341,063		5.70	821
Total Real Estate	409,763			1,834
Real Estate Construction:
One-to-four family residential	39,754		7.29	98
Commercial and multifamily residential	41,624		6.79	469
Total Real Estate Construction	81,378			567
Consumer	58,337		4.49	751
Subtotal of covered loans	714,733			$	6,055
Less:
Valuation discount resulting from acquisition accounting	191,617
Allowance for loan losses	6,055
Covered loans, net of valuation discounts and allowance for loan losses	$	517,061

Certain acquired loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Acquired loans that have common risk characteristics are aggregated into pools. The Company re-measures contractual and expected cash flows, at the pool-level, on a quarterly basis.

Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows.

Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix. The transition matrix is a matrix of probability values that specifies the probability of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the re-measurement date. Loss severity factors are based upon actual charge-off data within the loan pools and recovery lags are based upon experience with the collateral within the loan pools.

Acquired loans are also subject to the Company’s internal and external credit review and are risk rated using the same criteria as loans originated by the Company. However, risk ratings are not a clear indicator of losses on acquired loans as a majority of the losses are recoverable from the FDIC under the loss-sharing agreements.

Draws on acquired loans, advanced subsequent to the loan acquisition date, are accounted for under ASC 450-20 and those amounts are also subject to the Company’s internal and external credit review. An allowance for loan losses is estimated in a similar manner as the originated loan portfolio, and a provision for loan losses is charged to earnings as necessary.

The excess of cash flows expected to be collected over the initial fair value of acquired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates.

The following table shows the changes in accretable yield for acquired loans for three and nine months ended September 30, 2011:

(in thousands)	Three months ended September 30, 2011			Nine months ended September 30, 2011
Balance at beginning of period	$	314,333		$	256,572
Additions resulting from acquisitions	—			59,811
Accretion	(23,608		)	(60,369		)
Disposals	(8,594		)	(24,134		)
Reclassifications from nonaccretable difference	69			50,320
Balance at end of period	$	282,200		$	282,200

During the nine months ended September 30, 2011, the Company recorded a provision expense for losses on covered loans of $2.3 million. Of this amount, $3.5 million was impairment expense calculated in accordance with ASC 310-30 and $1.2 million was a negative provision to adjust the allowance for loss calculated under ASC 450-20 for draws on acquired loans. The impact to earnings of the $2.3 million of provision expense for covered loans was partially offset through noninterest income by an increase in the FDIC loss-sharing asset.

The following table shows the initially recorded amounts for loans acquired during 2011, which are accounted for on a pooled basis, at acquisition date, respectively:

	First Heritage Bank			Summit Bank
(in thousands)	May 27, 2011			May 20, 2011
Contractually required payments of interest and principal	$	151,611		$	127,823
Nonaccretable difference	(34,052		)	(34,301		)
Cash flows expected to be collected(1)	117,559			93,522
Accretable yield	(36,071		)	(23,739		)
Carrying value of acquired loans	$	81,488		$	69,783
(1) Represents undiscounted expected principal and interest cash flows

The following table sets forth activity in covered OREO at carrying value for the three and nine months ended September 30, 2011:

	Three Months Ended			Nine Months Ended
(in thousands)	September 30, 2011			September 30, 2011
Covered OREO:
Balance, beginning of period	$	23,730		$	14,443
Established through acquisitions	—			10,387
Transfers in, net of write-downs ($952 and $1,393, respectively)	2,979			8,071
OREO improvements	—			—
Additional OREO write-downs	(189		)	(302		)
Proceeds from sale of OREO property	(3,523		)	(14,604		)
Gain on sale of OREO	1,838			6,840
Total covered OREO, end of period	$	24,835		$	24,835

The covered OREO is covered by loss-sharing agreements with the FDIC in which the FDIC will assume 80% of additional write-downs and losses on covered OREO sales, or 95%, if applicable, of additional write-downs and losses on covered OREO sales if the minimum loss share thresholds are met.

FDIC Loss-sharing Asset

At September 30, 2011, the FDIC loss-sharing asset is comprised of a $186.5 million FDIC indemnification asset and a $7.4 million FDIC receivable. The indemnification represents the cash flows the Company expects to collect from the FDIC under the loss-sharing agreements and the FDIC receivable represents the reimbursable amounts from the FDIC that have not yet been received.

For covered loans, the Company re-measures contractual and expected cash flows on a quarterly basis. When the quarterly re-measurement process results in a decrease in expected cash flows due to an increase in expected credit losses, impairment is recorded. As a result of this impairment, the indemnification asset is increased to reflect anticipated future cash to be received from the FDIC. Consistent with the loss-sharing agreements between the Company and the FDIC, the amount of the increase to the indemnification asset is measured as 80% of the resulting impairment.

Alternatively, when the quarterly re-measurement results in an increase in expected future cash flows due to a decrease in expected credit losses, the nonaccretable difference decreases and the effective yield of the related loan portfolio is increased. As a result of the improved expected cash flows, the indemnification asset would be reduced first by the amount of any impairment previously recorded and, second, by increased amortization over the remaining life of the related loan pool.

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands)	2011			2010			2011			2010
Balance at beginning of period	$	209,694		$	226,745		$	205,991		$	—
Adjustments not reflected in income
Established through acquisitions	—			—			68,734			210,405
Cash received from the FDIC	(6,108		)	(11,198		)	(51,000		)	(11,198		)
FDIC reimbursable losses, net	1,138			416			2,192			13,357
Adjustments reflected in income
(Amortization) accretion	(9,333		)	2,401			(24,974		)	6,353
Loan loss provision	921			—			2,424			—
Other	(2,443		)	(6,937		)	(9,498		)	(7,490		)
Balance at end of period	$	193,869		$	211,427		$	193,869		$	211,427

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Fair Value Accounting and Measurement

9 Months Ended

Sep. 30, 2011

Fair Value Accounting And Measurement

Fair Value Accounting and Measurement

Fair Value Accounting and Measurement

The Fair Value Measurements and Disclosures topic of the FASB ASC defines fair value, establishes a consistent framework for measuring fair value and expands disclosure requirements about fair value. We hold fixed and variable rate interest-bearing securities, investments in marketable equity securities and certain other financial instruments, which are carried at fair value. Fair value is determined based upon quoted prices when available or through the use of alternative approaches, such as matrix or model pricing, when market quotes are not readily accessible or available.

The valuation techniques are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our own market assumptions. These two types of inputs create the following fair value hierarchy:

Level 1 – Quoted prices for identical instruments in active markets that are accessible at the measurement date.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model derived valuations whose inputs are observable or whose significant value drivers are observable.

Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable.

Fair values are determined as follows:

Securities at fair value are priced using matrix pricing based on the securities’ relationship to other benchmark quoted prices, and under the provisions of the Fair Value Measurements and Disclosures topic of the FASB ASC are considered a Level 2 input method.

Interest rate contract positions are valued in models, which use as their basis, readily observable market parameters and are classified within level 2 of the valuation hierarchy.

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2011 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value at September 30, 2011		Fair Value Measurements at Reporting Date Using
(in thousands)			Level 1		Level 2		Level 3
Assets
Securities available for sale
U.S. government and U.S. agency securities	$	71,380	$	—	$	71,380	$	—
U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations	644,726		—		644,726		—
State and municipal debt securities	276,417		—		276,417		—
Other securities	3,331		—		3,331		—
Total securities available for sale	$	995,854	$	—	$	995,854	$	—
Other assets (Interest rate contracts)	$	16,463	$	—	$	16,463	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	16,463	$	—	$	16,463	$	—

Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and OREO. The following methods were used to estimate the fair value of each such class of financial instrument:

Impaired loans—A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, a loan’s observable market price, or the fair market value of the collateral if the loan is collateral-dependent loan. Generally, the Company utilizes the fair market value of the collateral to measure impairment.

Other real estate owned—OREO is real property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO is recorded at the lower of the carrying amount of the loan or fair value less estimated costs to sell. This amount becomes the property’s new basis. Any write-downs based on the property fair value less estimated cost to sell at the date of acquisition are charged to the allowance for loan and lease losses. Management periodically reviews OREO in an effort to ensure the property is carried at the lower of its new basis or fair value, net of estimated costs to sell. Any write-downs subsequent to acquisition are charged to earnings.

The following table presents information about the Company’s assets measured at fair value on a nonrecurring basis for which a nonrecurring change in fair value has been recorded during the reporting period. The amounts disclosed below represent the fair values at the time the nonrecurring fair value measurements were made and not necessarily the fair value at the reporting date.

	Fair value  at September 30, 2011		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2011		Losses During the Nine Months Ended September 30, 2011
(in thousands)			Level 1		Level 2		Level 3
Impaired loans	$	3,717	$	—	$	—	$	3,717	$	735	$	4,707
Non-covered OREO	2,876		—		—		2,876		573		3,120
	$	6,593	$	—	$	—	$	6,593	$	1,308	$	7,827

The losses on impaired loans disclosed above represent the amount of the specific reserve and/or charge-offs during the period applicable to loans held at period end. The amount of the specific reserve is included in the allowance for loan and lease losses. The losses on non-covered OREO disclosed above represent the writedowns taken at foreclosure that were charged to the allowance for loan and lease losses, as well as subsequent writedowns from updated appraisals that were charged to earnings.

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Changes in Noncovered Other Real Estate Owned

9 Months Ended

Sep. 30, 2011

Other Real Estate and Foreclosed Assets [Abstract]

Changes in Noncovered Other Real Estate Owned

Changes in Noncovered Other Real Estate Owned

The following table sets forth activity in noncovered OREO for the period:

	Three Months Ended			Nine Months Ended
(in thousands)	September 30, 2011			September 30, 2011
Noncovered OREO:
Balance, beginning of period	$	22,739		$	30,991
Transfers in, net of write-downs ($0 and $108, respectively)	5,287			8,434
OREO improvements	257			726
Additional OREO write-downs	(644		)	(5,090		)
Proceeds from sale of OREO property	(2,359		)	(10,234		)
Gain (loss) on sale of OREO	(224		)	229
Total noncovered OREO, end of period	$	25,056		$	25,056

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Fair Value Accounting and Measurement (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Accounting And Measurement

Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2011 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value at September 30, 2011		Fair Value Measurements at Reporting Date Using
(in thousands)			Level 1		Level 2		Level 3
Assets
Securities available for sale
U.S. government and U.S. agency securities	$	71,380	$	—	$	71,380	$	—
U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations	644,726		—		644,726		—
State and municipal debt securities	276,417		—		276,417		—
Other securities	3,331		—		3,331		—
Total securities available for sale	$	995,854	$	—	$	995,854	$	—
Other assets (Interest rate contracts)	$	16,463	$	—	$	16,463	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	16,463	$	—	$	16,463	$	—

Financial Assets Accounted For Fair Value On Nonrecurring Basis

The following table presents information about the Company’s assets measured at fair value on a nonrecurring basis for which a nonrecurring change in fair value has been recorded during the reporting period. The amounts disclosed below represent the fair values at the time the nonrecurring fair value measurements were made and not necessarily the fair value at the reporting date.

	Fair value  at September 30, 2011		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2011		Losses During the Nine Months Ended September 30, 2011
(in thousands)			Level 1		Level 2		Level 3
Impaired loans	$	3,717	$	—	$	—	$	3,717	$	735	$	4,707
Non-covered OREO	2,876		—		—		2,876		573		3,120
	$	6,593	$	—	$	—	$	6,593	$	1,308	$	7,827

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Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit

9 Months Ended

Sep. 30, 2011

Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit

Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit

We maintain an allowance for loan and lease losses (“ALLL”) to absorb losses inherent in the loan portfolio. The size of the ALLL is determined through quarterly assessments of the probable estimated losses in the loan portfolio. Our methodology for making such assessments and determining the adequacy of the ALLL includes the following key elements:

1. General valuation allowance consistent with the Contingencies topic of the FASB ASC.

2. Classified loss reserves on specific relationships. Specific allowances for identified problem loans are determined in accordance with the Receivables topic of the FASB ASC.

3. The unallocated allowance provides for other factors inherent in our loan portfolio that may not have been contemplated in the general and specific components of the allowance. This unallocated amount generally comprises less than 5% of the allowance. The unallocated amount is reviewed quarterly based on trends in credit losses, the results of credit reviews and overall economic trends.

The general valuation allowance is systematically calculated quarterly using quantitative and qualitative information about specific loan classes. The minimum required level an entity develops a methodology to determine its allowance for loan and lease losses is by general categories of loans, such as commercial business, real estate, and consumer. However, the Company’s methodology in determining its allowance for loan and lease losses is prepared in a more detailed manner at the loan class level, utilizing specific categories such as commercial business secured, commercial business unsecured, real estate commercial land, and real estate income property multifamily. The quantitative information uses historical losses from a specific loan class and incorporates the loan’s risk rating migration from origination to the point of loss.

A loan’s risk rating is primarily determined based upon the borrower’s ability to fulfill its debt obligation from a cash flow perspective. In the event there is financial deterioration of the borrower, the borrower’s other sources of income or repayment are also considered, including recent appraisal values for collateral dependent loans. The qualitative information takes into account general economic and business conditions affecting our market place, seasoning of the loan portfolio, duration of the business cycle, etc. to ensure our methodologies reflect the current economic environment and other factors as using historical loss information exclusively may not give an accurate estimate of inherent losses within the Company’s loan portfolio.

When a loan is deemed to be impaired, the Company has to determine if a specific valuation allowance is required for that loan. The specific valuation allowance is a reserve, calculated at the individual loan level, for each loan determined to be both, impaired and containing a value less than its recorded investment. The Company measures the impairment based on the discounted expected future cash flows, observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent or if foreclosure is probable. The specific reserve for each loan is equal to the difference between the recorded investment in the loan and its determined impairment value.

The ALLL is increased by provisions for loan and lease losses (“provision”) charged to expense, and is reduced by loans charged off, net of recoveries. While the Company’s management believes the best information available is used to determine the ALLL, changes in market conditions could result in adjustments to the ALLL, affecting net income, if circumstances differ from the assumptions used in determining the ALLL.

We have used the same methodology for ALLL calculations during the three and nine months ended September 30, 2011 and 2010. Adjustments to the percentages of the ALLL allocated to loan categories are made based on trends with respect to delinquencies and problem loans within each class of loans. The Company reviews the ALLL quantitative and qualitative methodology on a quarterly basis and makes adjustments when appropriate. The Company continues to strive towards maintaining a conservative approach to credit quality and will continue to prudently adjust our ALLL as necessary in order to maintain adequate reserves. The Company carefully monitors the loan portfolio and continues to emphasize the importance of credit quality while continuously strengthening loan monitoring systems and controls.

The following table shows a detailed analysis of the allowance for loan and lease losses for noncovered loans as of the three and nine months ended September 30, 2011:

(in thousands)	Beginning Balance		Charge-offs			Recoveries		Provision			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2011
Commercial Business
Secured	$	22,320	$	(1,904	)	$	420	$	2,462		$	23,298	$	54	$	23,244
Unsecured	573		(42		)	40		167			738		—		738
Real Estate:
One-to-four family residential	847		(53		)	78		70			942		—		942
Commercial & multifamily residential
Commercial land	894		(4		)	—		(130		)	760		—		760
Income property multifamily	14,709		(339		)	10		(5,407		)	8,973		297		8,676
Owner occupied	6,479		(100		)	—		311			6,690		408		6,282
Real Estate Construction:
One-to-four family residential
Land and acquisition	2,852		(169		)	63		269			3,015		175		2,840
Residential construction	1,704		(14		)	56		(222		)	1,524		—		1,524
Commercial & multifamily residential
Income property multifamily	43		(145		)	—		157			55		—		55
Owner occupied	34		—			—		(7		)	27		—		27
Consumer	2,748		(2,102		)	70		2,985			3,701		32		3,669
Unallocated	854		—			—		(155		)	699		—		699
Total	$	54,057	$	(4,872	)	$	737	$	500		$	50,422	$	966	$	49,456
(in thousands)	Beginning Balance		Charge-offs			Recoveries		Provision			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2011
Commercial Business
Secured	$	21,811	$	(6,025	)	$	749	$	6,763		$	23,298	$	54	$	23,244
Unsecured	738		(126		)	408		(282		)	738		—		738
Real Estate:
One-to-four family residential	1,100		(717		)	78		481			942		—		942
Commercial & multifamily residential
Commercial land	634		(660		)	—		786			760		—		760
Income property multifamily	15,210		(979		)	65		(5,323		)	8,973		297		8,676
Owner occupied	9,692		(723		)	31		(2,310		)	6,690		408		6,282
Real Estate Construction:
One-to-four family residential
Land and acquisition	3,769		(1,347		)	1,831		(1,238		)	3,015		175		2,840
Residential construction	2,292		(1,068		)	92		208			1,524		—		1,524
Commercial & multifamily residential
Income property multifamily	274		(1,710		)	—		1,491			55		—		55
Owner occupied	70		—			—		(43		)	27		—		27
Consumer	2,120		(3,298		)	178		4,701			3,701		32		3,669
Unallocated	3,283		—			—		(2,584		)	699		—		699
Total	$	60,993	$	(16,653	)	$	3,432	$	2,650		$	50,422	$	966	$	49,456

The three and nine months changes as of September 30, 2011 and 2010 are summarized as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2011			2010			2011			2010
Beginning balance	$	54,057		$	59,748		$	60,993		$	53,478
Provision charged to expense	500			9,000			2,650			37,500
Loans charged off	(4,872		)	(7,540		)	(16,653		)	(31,466		)
Recoveries	737			1,126			3,432			2,822
Ending balance	$	50,422		$	62,334		$	50,422		$	62,334

Changes in the allowance for unfunded commitments and letters of credit are summarized as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands)	2011		2010		2011		2010
Beginning balance	$	1,460	$	815	$	1,165	$	775
Net changes in the allowance for unfunded commitments and letters of credit	—		350		295		390
Ending balance	$	1,460	$	1,165	$	1,460	$	1,165

Risk Elements

The extension of credit in the form of loans to individuals and businesses is one of our principal commerce activities. Our policies and applicable laws and regulations require risk analysis as well as ongoing portfolio and credit management. We manage our credit risk through lending limit constraints, credit review, approval policies and extensive, ongoing internal monitoring. We also manage credit risk through diversification of the loan portfolio by type of loan, type of industry, type of borrower and by limiting the aggregation of debt to a single borrower.

The monitoring process for the loan portfolio includes periodic reviews of individual loans with risk ratings assigned to each loan. Based on the analysis, loans are given a risk rating of 1-10 based on the following criteria:

• ratings of 1-3 indicate minimal to low credit risk,

• ratings of 4-5 indicate an average credit risk with adequate repayment capacity when prolonged periods of adversity do not exist,

• rating of 6 indicate higher than average risk requiring greater than routine attention by bank personnel due to conditions affecting the borrower, the borrower's industry or economic environment,

• rating of 7 indicate potential weaknesses that, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company's credit position at some future date,

• rating of 8 indicates a loss is possible if loan weaknesses are not corrected,

• rating of 9 indicates loss is highly probable; however, the amount of loss has not yet been determined,

• and a rating of 10 indicates the loan is uncollectable, and when identified is charged-off.

Loans with a risk rating of 1-6 are considered Pass loans and loans with risk ratings of 7, 8, 9 and 10 are considered Special Mention, Substandard, Doubtful and Loss, respectively. Loans with a risk rating of Substandard or worse are reported as classified loans in our allowance for loan and lease losses analysis. We review these loans to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating may be adjusted accordingly. Risk ratings are reviewed and updated whenever appropriate, with more periodic reviews as the risk and dollar value of loss on the loan increases. In the event full collection of principal and interest is not reasonably assured, the loan is appropriately downgraded and, if warranted, placed on non-accrual status even though the loan may be current as to principal and interest payments. Additionally, we assess whether an impairment of a loan warrants specific reserves or a write-down of the loan.

The following is an analysis of the credit quality of our noncovered loan portfolio as of September 30, 2011 and December 31, 2010:

	September 30, 2011:			December 31, 2010:
(dollars in thousands)	Weighted- Average Risk Rating	Recorded Investment Noncovered Loans		Weighted- Average Risk Rating	Recorded Investment Noncovered Loans
Commercial Business
Secured	4.95	$	916,290	4.96	$	757,372
Unsecured	4.25	58,836		4.23	41,175
Real Estate:
One-to-four family residential	4.91	63,672		4.96	49,436
Commercial & multifamily residential
Commercial land	5.64	48,132		5.75	24,956
Income property multifamily	4.98	526,531		5.07	406,711
Owner occupied	5.08	391,804		5.12	366,284
Real Estate Construction:
One-to-four family residential
Land and acquisition	6.61	25,978		6.79	37,054
Residential construction	6.07	25,945		6.63	31,293
Commercial & multifamily residential
Income property multifamily	5.39	13,801		6.38	18,296
Owner occupied	4.45	10,358		4.93	11,990
Consumer	4.27	176,552		4.31	182,624
Total recorded investment of noncovered loans		$	2,257,899		$	1,927,191

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Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Percentage of loss assumed by FDIC on sale of covered OREO	80.00%
Percentage of loss assumed by FDIC on sale of covered OREO if minimum loss share is met		95.00%
Percentage of loss recovery agreement	80.00%	95.00%
Percentage of Clawback	50.00%
Percentage of stated threshold	20.00%
Percentage of assets premium	25.00%
Amount of estimated clawback liability	$ 3.3
Provision expense on covered loans	2.3
Impairment expenses	3.5
Negative provision to adjust allowance for loss	1.2
Federal deposit insurance corporation loss-sharing indemnified assets	186.5
Federal deposit insurance corporation loss-sharing indemnified assets receivable	$ 7.4
Maximum [Member]
Loss sharing agreement effective years	10
Loss recovery provision effective years	10
Percentage of cumulative loss-sharing	25.00%
Minimum [Member]
Loss sharing agreement effective years	5
Loss recovery provision effective years	8
Percentage of cumulative loss-sharing	20.00%

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Consolidated Condensed Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash Flows From Operating Activities
Net Income	$ 33,283	$ 18,176
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses and losses on covered loans	4,962	37,953
Stock-based compensation expense	1,163	1,054
Depreciation, amortization and accretion	2,612	10,105
Net realized gain on FDIC assisted bank acquisitions	(1,830)	(9,818)
Net realized gain on sale of securities	0	(58)
Net realized gain on sale of other assets	(13)	(16)
Net realized gain on sale of other real estate owned	(7,069)	(3,527)
Gain on termination of cash flow hedging instruments	(222)	(1,463)
Write-down on other real estate owned	5,392	4,586
Deferred income tax benefit	0	(394)
Net change in:
FDIC loss-sharing asset	29,856	1,022
Loans held for sale	(1,814)	(1,513)
Interest receivable	(3,384)	4,195
Interest payable	(226)	(625)
Other assets	5,886	(251)
Other liabilities	1,608	22,053
Net cash provided by operating activities	70,204	81,479
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(69,420)	114,618
Purchases of securities available for sale	(294,678)	(64,054)
Purchases of premises and equipment	(10,619)	(3,910)
Proceeds from FDIC reimbursement on loss-sharing asset	51,000	0
Proceeds from sales of securities available for sale	0	69,328
Proceeds from principal repayments and maturities of securities available for sale	101,071	66,118
Proceeds from disposal of premises and equipment	59	71
Proceeds from sales of covered other real estate owned	14,604	10,652
Proceeds from sales of other real estate and other personal property owned	10,234	3,943
Capital improvements on other real estate properties	(726)	(1,147)
Decrease in Small Business Administration secured borrowings	(642)	1,599
Net cash acquired in business combinations	247,792	155,910
Net cash (used in) provided by investing activities	48,675	353,128
Cash Flows From Financing Activities
Net increase in deposits	(215,701)	(323,141)
Proceeds from issuance of common stock	0	229,129
Proceeds from exercise of stock options	792	851
Proceeds from Federal Home Loan Bank advances	100	0
Proceeds from Federal Reserve Bank borrowings	100	0
Repayment of Federal Home Loan Bank advances	(39,447)	0
Repayment of Federal Reserve Bank borrowings	(100)	(36,237)
Payment of preferred stock dividends	0	(2,840)
Payment of common stock dividends	(5,524)	(1,068)
Repurchase of preferred stock and common stock warrant	0	(80,200)
Payments for Repurchase of Common Stock	(32)	0
Net decrease in other borrowings	(25,735)	(86)
Net cash used in financing activities	(285,547)	(213,592)
(Decrease) Increase in cash and cash equivalents	(166,668)	221,015
Cash and cash equivalents at beginning of period	514,130	305,074
Cash and cash equivalents at end of period	347,462	526,089
Supplemental Information:
Cash paid for interest	11,967	17,164
Cash paid for income tax	12,870	3,015
Non-cash investing activities
Assets acquired in FDIC assisted acquisitions (excluding cash and cash equivalents)	485,870	1,075,166
Liabilities assumed in FDIC assisted acquisitions	731,832	1,210,882
Loans transferred to other real estate owned	$ 16,505	$ 27,266

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings per Common Share

Basic Earnings per Share (“EPS”) is computed by dividing income applicable to common shareholders by the weighted average number of common shares outstanding for the period. Common shares outstanding include common stock and vested restricted stock awards where recipients have satisfied the vesting terms. Diluted EPS reflects the assumed conversion of all dilutive securities, applying the treasury stock method. The Company calculates earnings per share using the two-class method as described in the Earnings per Share topic of the FASB Accounting Standards Codification (“ASC”). The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2011 and 2010:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands except per share)	2011		2010		2011		2010
Basic EPS:
Net income	$	18,872	$	5,204	$	33,283	$	18,176
Less: Preferred dividends and accretion of issuance discount for preferred stock	—		(2,730)		—		(4,947)
Net income applicable to common shareholders	$	18,872	$	2,474	$	33,283	$	13,229
Less: Earnings allocated to participating securities	(177)		(22)		(311)		(127)
Earnings allocated to common shareholders	$	18,695	$	2,452	$	32,972	$	13,102
Weighted average common shares outstanding	39,131		38,976		39,092		33,938
Basic earnings per common share	$	0.48	$	0.06	$	0.84	$	0.39
Diluted EPS:
Earnings allocated to common shareholders	$	18,695	$	2,452	$	32,972	$	13,102
Weighted average common shares outstanding	39,131		38,976		39,092		33,938
Dilutive effect of equity awards and warrants	61		161		75		204
Weighted average diluted common shares outstanding	39,192		39,137		39,167		34,142
Diluted earnings per common share	$	0.48	$	0.06	$	0.84	$	0.38
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	75		62		62		54

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Securities (Carrying Value of Securities Pledged as Collateral) (Details) (USD $) In Thousands	Sep. 30, 2011
Carrying amount of securities pledged as collateral	$ 438,837
To Washington and Oregon State To Secure Public Deposits [Member]
Carrying amount of securities pledged as collateral	237,671
To Federal Home Loan Bank To Secure Advances [Member]
Carrying amount of securities pledged as collateral	95,139
To Federal Reserve Bank To Secure Borrowings [Member]
Carrying amount of securities pledged as collateral	55,947
Repurchase Agreement [Member]
Carrying amount of securities pledged as collateral	0
Interest Rate Contracts [Member]
Carrying amount of securities pledged as collateral	0
Other Securities Pledged [Member]
Carrying amount of securities pledged as collateral	$ 50,080

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Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2011

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Schedule of Comprehensive Income

The components of comprehensive income are as follows:

	Three Months Ended
	September 30,
(in thousands)	2011			2010
Net income as reported	$	18,872		$	5,204
Unrealized gain from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($2,808) and ($2,611)	4,988			4,739
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $0	—			—
Net unrealized gain from securities, net of reclassification adjustment	4,988			4,739
Cash flow hedging instruments:
Reclassification adjustment of net gain included in income, net of tax of $0 and $119	—			(216		)
Net change in cash flow hedging instruments	—			(216		)
Pension plan liability adjustment:
Net unrealized gain from unfunded defined benefit plan liability arising during the period, net of tax of $0 and $0	—			—
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($8) and ($4)	14			7
Pension plan liability adjustment, net	14			7
Total comprehensive income	$	23,874		$	9,734
	Nine Months Ended
	September 30,
(in thousands)	2011			2010
Net income as reported	$	33,283		$	18,176
Unrealized gain from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($7,733) and ($6,553)	13,768			11,897
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $20	—			(38		)
Net unrealized gain from securities, net of reclassification adjustment	13,768			11,859
Cash flow hedging instruments:
Reclassification adjustment of net gain included in income, net of tax of $79 and $520	(143		)	(943		)
Net change in cash flow hedging instruments	(143		)	(943		)
Pension plan liability adjustment:
Net unrealized gain (loss) from unfunded defined benefit plan liability arising during the period, net of tax of $154 and ($12)	(260		)	23
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($23) and ($11)	41			21
Pension plan liability adjustment, net	(219		)	44
Total comprehensive income	$	46,689		$	29,136

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Changes in Noncovered Other Real Estate Owned (Summary of Noncovered Other Real Estate Owned) (Details) (USD $) In Thousands	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Noncovered OREO [Member]	Sep. 30, 2011 Noncovered OREO [Member]
Balance, beginning of period			$ 22,739	$ 30,991
Transfers in, net of write-downs ($0 for Q3 2011 and $108 for Q3 2011YTD)			5,287	8,434
Writedowns Previously Recorded On Transfer In Of Real Estate Acquired Through Foreclosure			0	(108)
OREO improvements			257	726
Additional OREO write-downs			(644)	(5,090)
Proceeds from sale of OREO property	(10,234)	(3,943)	(2,359)	(10,234)
Net realized gain on sale of other real estate owned	7,069	3,527	(224)	229
Total noncovered OREO, end of period			$ 25,056	$ 25,056

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Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Goodwill [Roll Forward]
Total goodwill, beginning of period	$ 118,434	$ 109,639	$ 109,639	$ 95,519
Established through acquisitions	0	0	8,795	14,120
Total goodwill, end of period	118,434	109,639	118,434	109,639
Gross core deposit intangible balance, beginning of period	28,497	26,651	26,651	8,896
Accumulated amortization, beginning of period	(9,894)	(5,874)	(7,955)	(4,032)
Core deposit intangible, net, beginning of period	18,603	20,777	18,696	4,864
Established through acquisitions	3,943	0	5,789	17,755
CDI current period amortization	(1,177)	(1,044)	(3,116)	(2,886)
Total core deposit intangible, end of period	21,369	19,733	21,369	19,733
Total goodwill and intangible assets, end of period	$ 139,803	$ 129,372	$ 139,803	$ 129,372

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Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit (Analysis of Credit Quality of Noncovered Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Recorded Investment Noncovered Loans	$ 2,257,899	$ 1,927,191
Commercial Business [Member] | Secured Debt [Member]
Weighted-Average Risk Rating	4.95	4.96
Recorded Investment Noncovered Loans	916,290	757,372
Commercial Business [Member] | Unsecured Debt [Member]
Weighted-Average Risk Rating	4.25	4.23
Recorded Investment Noncovered Loans	58,836	41,175
Real Estate One-To-Four Family [Member] | Residential [Member]
Weighted-Average Risk Rating	4.91	4.96
Recorded Investment Noncovered Loans	63,672	49,436
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Weighted-Average Risk Rating	5.64	5.75
Recorded Investment Noncovered Loans	48,132	24,956
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Weighted-Average Risk Rating	4.98	5.07
Recorded Investment Noncovered Loans	526,531	406,711
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Weighted-Average Risk Rating	5.08	5.12
Recorded Investment Noncovered Loans	391,804	366,284
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Weighted-Average Risk Rating	6.61	6.79
Recorded Investment Noncovered Loans	25,978	37,054
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Weighted-Average Risk Rating	6.07	6.63
Recorded Investment Noncovered Loans	25,945	31,293
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Weighted-Average Risk Rating	5.39	6.38
Recorded Investment Noncovered Loans	13,801	18,296
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Weighted-Average Risk Rating	4.45	4.93
Recorded Investment Noncovered Loans	10,358	11,990
Consumer [Member]
Weighted-Average Risk Rating	4.27	4.31
Recorded Investment Noncovered Loans	$ 176,552	$ 182,624

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Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Securities available for sale	$ 995,854	$ 763,866
U.S. Government Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
U.S. Government Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	71,380
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
U.S. Government Agency [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	71,380
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	644,726
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	644,726
State and Municipal Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
State and Municipal Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	276,417
State and Municipal Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
State and Municipal Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	276,417
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	3,331
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	3,331
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
Other assets (Interest rate contracts)	0
Other liabilities (Interest rate contracts)	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	995,854
Other assets (Interest rate contracts)	16,463
Other liabilities (Interest rate contracts)	16,463
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale	0
Other assets (Interest rate contracts)	0
Other liabilities (Interest rate contracts)	0
Fair Value, Measurements, Recurring [Member]
Securities available for sale	995,854
Other assets (Interest rate contracts)	16,463
Other liabilities (Interest rate contracts)	$ 16,463

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Business Combinations

9 Months Ended

Sep. 30, 2011

Business Combination, Description [Abstract]

Business Combinations

Business Combinations

Summit Bank

On May 20, 2011 the Bank acquired certain assets and assumed certain liabilities of Summit Bank from the Federal Deposit Insurance Corporation (“FDIC”) in an FDIC-assisted transaction. As part of the Purchase and Assumption Agreement, the Bank and the FDIC entered into loss-sharing agreements (each, a “loss-sharing agreement” and collectively, the “loss-sharing agreements”), whereby the FDIC will cover a substantial portion of any future losses on loans (and related unfunded commitments), OREO and certain accrued interest on loans for up to 90 days. We refer to the acquired loans and OREO subject to the loss-sharing agreements collectively as “covered assets.” Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries. The loss-sharing provisions of the agreements for commercial and single family residential mortgage loans are in effect for five years and ten years, respectively, from the May 20, 2011 acquisition date and the loss recovery provisions for such loans are in effect for eight years and ten years, respectively, from the acquisition date.

Summit Bank was a full service community bank headquartered in Burlington, Washington that operated three branch locations in Skagit County. We entered into this transaction to assist us with filling in our geographic footprint between Seattle and Bellingham, Washington and to support our recently expanded Bellingham banking team. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.

The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were provisionally recorded at their estimated fair values as of the May 20, 2011 acquisition date. The initial accounting for acquired loans and the related indemnification asset for the Summit Bank acquisition was incomplete as of June 30, 2011. The amounts recognized at June 30, 2011 were determined provisionally as the fair value analysis of those assets utilizing an income approach was not complete as of June 30, 2011. These amounts have been retrospectively adjusted to reflect the completion of the fair value analysis utilizing an income approach during the current period. The adjustment recorded in the current period was an increase in the FDIC indemnification asset of $3.0 million, a decrease in acquired loans of $1.7 million, a decrease in goodwill of $851 thousand, and a decrease in other real estate owned covered by loss sharing of $509 thousand. The goodwill represents the excess of the estimated fair value of the liabilities assumed over the estimated fair value of the assets acquired and is influenced significantly by the FDIC-assisted transaction process. All of the goodwill and core deposit intangible assets recognized are deductible for income tax purposes.

The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period May 21, 2011 to September 30, 2011. Due primarily to the significant amount of fair value adjustments and the FDIC loss-sharing agreements put in place, historical results of Summit Bank are not meaningful to the Company’s results and thus no proforma information is presented.

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	May 20, 2011
	(in thousands)
Assets
Cash and due from banks	$	1,837
Interest-earning deposits with banks and federal funds sold	14,198
Investment securities	871
Federal Home Loan Bank stock	406
Acquired loans	69,783
Accrued interest receivable	429
Premises and equipment	42
FDIC receivable	6,984
Other real estate owned covered by loss sharing	2,162
Goodwill	2,919
Core deposit intangible	509
FDIC indemnification asset	30,203
Other assets	786
Total assets acquired	$	131,129
Liabilities
Deposits	$	123,279
Federal Home Loan Bank advances	7,772
Accrued interest payable	71
Other liabilities	7
Total liabilities assumed	$	131,129

First Heritage Bank

On May 27, 2011 the Bank acquired certain assets and assumed certain liabilities of First Heritage Bank from the FDIC in an FDIC-assisted transaction. As part of the Purchase and Assumption Agreement, the Bank and the FDIC entered into loss-sharing agreements (each, a “loss-sharing agreement” and collectively, the “loss-sharing agreements”), whereby the FDIC will cover a substantial portion of any future losses on loans (and related unfunded commitments), OREO and certain accrued interest on loans for up to 90 days. We refer to the acquired loans and OREO subject to the loss-sharing agreements collectively as “covered assets.” Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries. The loss-sharing provisions of the agreements for commercial and single family residential mortgage loans are in effect for five years and ten years, respectively, from the May 27, 2011 acquisition date and the loss recovery provisions for such loans are in effect for eight years and ten years, respectively, from the acquisition date.

First Heritage Bank was a full service community bank headquartered in Snohomish, Washington that operated five branch locations in King and Snohomish Counties. We entered into this transaction to assist us with filling in our geographic footprint between Seattle and Bellingham, Washington and to support our recently expanded Bellingham banking team. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.

The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were provisionally recorded at their estimated fair values as of the May 27, 2011 acquisition date. The initial accounting for acquired loans and the related indemnification asset for the First Heritage Bank acquisition was incomplete as of June 30, 2011. The amounts recognized at June 30, 2011 were determined provisionally as the fair value analysis of those assets utilizing an income approach was not complete as of June 30, 2011. These amounts have been retrospectively adjusted to reflect the completion of the fair value analysis utilizing an income approach during the current period. The adjustment recorded in the current period was an increase in the FDIC indemnification asset of $427 thousand, a decrease in acquired loans of $369 thousand and a decrease in goodwill of $58 thousand. The goodwill represents the excess of the estimated fair value of the liabilities assumed over the estimated fair value of the assets acquired and is influenced significantly by the FDIC-assisted transaction process. All of the goodwill and core deposit intangible assets recognized are deductible for income tax purposes.

The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period May 28, 2011 to September 30, 2011. Due primarily to the significant amount of fair value adjustments and the FDIC loss-sharing agreements put in place, historical results of First Heritage Bank are not meaningful to the Company’s results and thus no proforma information is presented.

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	May 27, 2011
	(in thousands)
Assets
Cash and due from banks	$	4,688
Interest-earning deposits with banks	6,689
Investment securities	5,303
Federal Home Loan Bank stock	477
Acquired loans	81,488
Accrued interest receivable	476
Premises and equipment	5,339
FDIC receivable	4,751
Other real estate owned covered by loss sharing	8,225
Goodwill	5,876
Core deposit intangible	1,337
FDIC indemnification asset	38,531
Other assets	1,804
Total assets acquired	$	164,984
Liabilities
Deposits	$	159,525
Federal Home Loan Bank advances	5,003
Accrued interest payable	421
Other liabilities	35
Total liabilities assumed	$	164,984

Bank of Whitman

On August 5, 2011 the Bank acquired certain assets and assumed certain liabilities of the Bank of Whitman from the FDIC in an FDIC-assisted transaction. The Bank and the FDIC entered into a modified whole bank purchase and assumption agreement without loss share. 

The Bank of Whitman was a full service community bank headquartered in Colfax, Washington.  We entered into this transaction to acquire nine branches total in Adams, Asotin, Grant, Spokane, Walla Walla, and Whitman counties to assist us with filling in our geographic footprint in eastern Washington. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.

 The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method).  The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the August 5, 2011 acquisition date.  The application of the acquisition method of accounting resulted in the recognition of a bargain purchase gain, net of tax, of $1.8 million, which is included in the Gain on bank acquisition line item in the Consolidated Condensed Statements of Income, and a core deposit intangible of $3.9 million. The bargain purchase gain represents the excess of the estimated fair value of the assets acquired over the estimated fair value of the liabilities assumed and is influenced significantly by the FDIC-assisted transaction process. The core deposit intangible asset recognized is deductible for income tax purposes.

The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period August 6, 2011 to September 30, 2011. Due to the exclusion of the majority of the non-performing loans and 11 branch locations, as well as the significant amount of fair value adjustments, historical results of the Bank of Whitman are not meaningful to the Company's results and thus no proforma information is presented.

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	August 5, 2011
	(in thousands)
Assets
Cash and due from banks	$	52,072
Investment securities	16,298
Federal Reserve Bank and Federal Home Loan Bank stock	3,977
Acquired loans	200,041
Accrued interest receivable	1,975
Premises and equipment	86
FDIC receivable	156,710
Core deposit intangible	3,943
Other assets	2,447
Total assets acquired	$	437,549
Liabilities
Deposits	401,127
Federal Home Loan Bank advances	32,949
Accrued interest payable	213
Deferred tax liability	1,034
Other liabilities	396
Total liabilities assumed	$	435,719
Net assets acquired (after tax gain)	$	1,830

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Noncovered Loans (Narrative) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Noncovered Loans [Abstract]
Loans to related parties	$ 9.5	$ 12.9
Advances on related party loans	3.1
Repayments on related party loans	6.5
Commercial and residential real estate loans pledged as FHLB collateral	401.6	426.6
Additional funds committed to lend on loans classified as TDR	$ 2.4

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Covered Assets and FDIC Loss-sharing Asset (Tables)

9 Months Ended

Sep. 30, 2011

Covered Assets And FDIC Loss Sharing Asset

Analysis and Allowance for Losses on Covered Loans

The following is an analysis of our covered loans, net of related allowance for losses on covered loans as of September 30, 2011 and December 31, 2010:

(dollars in thousands)	Covered Loans September 30, 2011		Weighted- Average Risk Rating	Allowance for Loan Losses
Commercial Business	$	220,727	6.09	$	2,018
Real Estate:
One-to-four family residential	84,724		5.33	1,071
Commercial and multifamily residential	346,406		5.90	4,293
Total Real Estate	431,130			5,364
Real Estate Construction:
One-to-four family residential	55,928		7.40	205
Commercial and multifamily residential	30,034		7.15	134
Total Real Estate Construction	85,962			339
Consumer	60,306		5.07	606
Subtotal of covered loans	798,125			$	8,327
Less:
Valuation discount resulting from acquisition accounting	218,993
Allowance for loan losses	8,327
Covered loans, net of valuation discounts and allowance for loan losses	$	570,805
(dollars in thousands)	Covered Loans December 31, 2010		Weighted- Average Risk Rating	Allowance for Loan Losses
Commercial Business	$	165,255	5.74	$	2,903
Real Estate:
One-to-four family residential	68,700		4.77	1,013
Commercial and multifamily residential	341,063		5.70	821
Total Real Estate	409,763			1,834
Real Estate Construction:
One-to-four family residential	39,754		7.29	98
Commercial and multifamily residential	41,624		6.79	469
Total Real Estate Construction	81,378			567
Consumer	58,337		4.49	751
Subtotal of covered loans	714,733			$	6,055
Less:
Valuation discount resulting from acquisition accounting	191,617
Allowance for loan losses	6,055
Covered loans, net of valuation discounts and allowance for loan losses	$	517,061

Changes in Accretable Yield for Acquired Loans

The following table shows the changes in accretable yield for acquired loans for three and nine months ended September 30, 2011:

(in thousands)	Three months ended September 30, 2011			Nine months ended September 30, 2011
Balance at beginning of period	$	314,333		$	256,572
Additions resulting from acquisitions	—			59,811
Accretion	(23,608		)	(60,369		)
Disposals	(8,594		)	(24,134		)
Reclassifications from nonaccretable difference	69			50,320
Balance at end of period	$	282,200		$	282,200

Schedule of Carrying Amounts for Acquired Loans at Acquisition Date

The following table shows the initially recorded amounts for loans acquired during 2011, which are accounted for on a pooled basis, at acquisition date, respectively:

	First Heritage Bank			Summit Bank
(in thousands)	May 27, 2011			May 20, 2011
Contractually required payments of interest and principal	$	151,611		$	127,823
Nonaccretable difference	(34,052		)	(34,301		)
Cash flows expected to be collected(1)	117,559			93,522
Accretable yield	(36,071		)	(23,739		)
Carrying value of acquired loans	$	81,488		$	69,783
(1) Represents undiscounted expected principal and interest cash flows

Covered OREO at Carrying Value

The following table sets forth activity in covered OREO at carrying value for the three and nine months ended September 30, 2011:

	Three Months Ended			Nine Months Ended
(in thousands)	September 30, 2011			September 30, 2011
Covered OREO:
Balance, beginning of period	$	23,730		$	14,443
Established through acquisitions	—			10,387
Transfers in, net of write-downs ($952 and $1,393, respectively)	2,979			8,071
OREO improvements	—			—
Additional OREO write-downs	(189		)	(302		)
Proceeds from sale of OREO property	(3,523		)	(14,604		)
Gain on sale of OREO	1,838			6,840
Total covered OREO, end of period	$	24,835		$	24,835

FDIC Loss-sharing Asset

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands)	2011			2010			2011			2010
Balance at beginning of period	$	209,694		$	226,745		$	205,991		$	—
Adjustments not reflected in income
Established through acquisitions	—			—			68,734			210,405
Cash received from the FDIC	(6,108		)	(11,198		)	(51,000		)	(11,198		)
FDIC reimbursable losses, net	1,138			416			2,192			13,357
Adjustments reflected in income
(Amortization) accretion	(9,333		)	2,401			(24,974		)	6,353
Loan loss provision	921			—			2,424			—
Other	(2,443		)	(6,937		)	(9,498		)	(7,490		)
Balance at end of period	$	193,869		$	211,427		$	193,869		$	211,427

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Fair Value of Financial Instruments (Summary of Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Cash and due from banks	$ 97,432	$ 55,492
Interest-earning deposits with banks	250,030	458,638
Securities available for sale	995,854	763,866
FHLB stock	22,215	17,908
Loans	2,778,282	2,371,822
FDIC loss-sharing asset	193,869	205,991
Deposits	3,795,499	3,327,269
FHLB Advances	122,642	119,405
Repurchase agreements	25,000	25,000
Other borrowings	0	642
Long-term subordinated debt	0	25,735
Carrying Amount [Member]
Cash and due from banks	97,432	55,492
Interest-earning deposits with banks	250,030	458,638
Securities available for sale	995,854	763,866
FHLB stock	22,215	17,908
Loans held for sale	2,568	754
Loans	2,778,282	2,371,822
FDIC loss-sharing asset	193,869	205,991
Interest rate contracts	16,463	10,167
Deposits	3,795,499	3,327,269
FHLB Advances	122,642	119,405
Repurchase agreements	25,000	25,000
Other borrowings	0	642
Long-term subordinated debt	0	25,735
Interest rate contracts	16,463	10,167
Fair Value [Member]
Cash and due from banks	97,432	55,492
Interest-earning deposits with banks	250,030	458,638
Securities available for sale	995,854	763,866
FHLB stock	22,215	17,908
Loans held for sale	2,568	754
Loans	3,039,531	2,525,113
FDIC loss-sharing asset	193,869	205,991
Interest rate contracts	16,463	10,167
Deposits	3,797,901	3,330,616
FHLB Advances	124,358	122,722
Repurchase agreements	27,022	27,251
Other borrowings	0	642
Long-term subordinated debt	0	20,156
Interest rate contracts	$ 16,463	$ 10,167

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Shareholders' Equity (Details) (USD $)	0 Months Ended						3 Months Ended		9 Months Ended
	Aug. 24, 2011	Jul. 28, 2011	May 25, 2011	Apr. 27, 2011	Mar. 03, 2011	Feb. 03, 2011	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Oct. 27, 2011 Dividend Declared [Member]
Subsequent Event [Line Items]
Quarterly cash dividend payable											$ 0.08
Special cash dividend payable											$ 0.05
Declared quarterly cash dividend		$ 0.06		$ 0.05		$ 0.03
Quarterly cash dividend paid	$ 0.06		$ 0.05		$ 0.03		$ 0.06	$ 0.01	$ 0.14	$ 0.03

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Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Of Financial Instruments

Summary of Carrying Amounts and Estimated Fair Values of Selected Financial Instruments

The following table summarizes carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value:

	September 30, 2011				December 31, 2010
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets
Cash and due from banks	$	97,432	$	97,432	$	55,492	$	55,492
Interest-earning deposits with banks	250,030		250,030		458,638		458,638
Securities available for sale	995,854		995,854		763,866		763,866
FHLB stock	22,215		22,215		17,908		17,908
Loans held for sale	2,568		2,568		754		754
Loans	2,778,282		3,039,531		2,371,822		2,525,113
FDIC loss-sharing asset	193,869		193,869		205,991		205,991
Interest rate contracts	16,463		16,463		10,167		10,167
Liabilities
Deposits	$	3,795,499	$	3,797,901	$	3,327,269	$	3,330,616
FHLB Advances	122,642		124,358		119,405		122,722
Repurchase agreements	25,000		27,022		25,000		27,251
Other borrowings	—		—		642		642
Long-term subordinated debt	—		—		25,735		20,156
Interest rate contracts	16,463		16,463		10,167		10,167

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Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Less than 12 Months Fair Value	$ 131,656	$ 163,559
Less than 12 Months Unrealized Losses	(1,002)	(3,130)
12 Months or More Fair Value	2,452	4,348
12 Months or More Unrealized Losses	(46)	(318)
Total Fair Value	134,108	167,907
Total Unrealized Losses	(1,048)	(3,448)
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Less than 12 Months Fair Value	119,998	86,529
Less than 12 Months Unrealized Losses	(905)	(1,025)
12 Months or More Fair Value	275	588
12 Months or More Unrealized Losses	(1)	(2)
Total Fair Value	120,273	87,117
Total Unrealized Losses	(906)	(1,027)
State and Municipal Securities [Member]
Less than 12 Months Fair Value	11,558	74,755
Less than 12 Months Unrealized Losses	(97)	(2,099)
12 Months or More Fair Value	1,204	2,792
12 Months or More Unrealized Losses	(18)	(284)
Total Fair Value	12,762	77,547
Total Unrealized Losses	(115)	(2,383)
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Less than 12 Months Fair Value	100
Less than 12 Months Unrealized Losses	0
12 Months or More Fair Value	0
12 Months or More Unrealized Losses	0
Total Fair Value	100
Total Unrealized Losses	0
Other Securities [Member]
Less than 12 Months Fair Value	0	2,275
Less than 12 Months Unrealized Losses	0	(6)
12 Months or More Fair Value	973	968
12 Months or More Unrealized Losses	(27)	(32)
Total Fair Value	973	3,243
Total Unrealized Losses	$ (27)	$ (38)

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill And Intangible Assets

Schedule of Goodwill and Intangible Assets

The following table sets forth activity for goodwill and intangible assets for the period:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands)	2011			2010			2011			2010
Total goodwill, beginning of period	$	118,434		$	109,639		$	109,639		$	95,519
Established through acquisitions	—			—			8,795			14,120
Total goodwill, end of period	118,434			109,639			118,434			109,639
Gross core deposit intangible balance, beginning of period	28,497			26,651			26,651			8,896
Accumulated amortization, beginning of period	(9,894		)	(5,874		)	(7,955		)	(4,032		)
Core deposit intangible, net, beginning of period	18,603			20,777			18,696			4,864
Established through acquisitions	3,943			—			5,789			17,755
CDI current period amortization	(1,177		)	(1,044		)	(3,116		)	(2,886		)
Total core deposit intangible, end of period	21,369			19,733			21,369			19,733
Total goodwill and intangible assets, end of period	$	139,803		$	129,372		$	139,803		$	129,372

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2011 and the succeeding four years:

(in thousands)	Amount
Year ending December 31,
2011	$	1,203
2012	4,445
2013	3,964
2014	3,397
2015	2,645

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Comprehensive Income

9 Months Ended

Sep. 30, 2011

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Comprehensive Income

Comprehensive Income

The components of comprehensive income are as follows:

	Three Months Ended
	September 30,
(in thousands)	2011			2010
Net income as reported	$	18,872		$	5,204
Unrealized gain from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($2,808) and ($2,611)	4,988			4,739
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $0	—			—
Net unrealized gain from securities, net of reclassification adjustment	4,988			4,739
Cash flow hedging instruments:
Reclassification adjustment of net gain included in income, net of tax of $0 and $119	—			(216		)
Net change in cash flow hedging instruments	—			(216		)
Pension plan liability adjustment:
Net unrealized gain from unfunded defined benefit plan liability arising during the period, net of tax of $0 and $0	—			—
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($8) and ($4)	14			7
Pension plan liability adjustment, net	14			7
Total comprehensive income	$	23,874		$	9,734
	Nine Months Ended
	September 30,
(in thousands)	2011			2010
Net income as reported	$	33,283		$	18,176
Unrealized gain from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($7,733) and ($6,553)	13,768			11,897
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $20	—			(38		)
Net unrealized gain from securities, net of reclassification adjustment	13,768			11,859
Cash flow hedging instruments:
Reclassification adjustment of net gain included in income, net of tax of $79 and $520	(143		)	(943		)
Net change in cash flow hedging instruments	(143		)	(943		)
Pension plan liability adjustment:
Net unrealized gain (loss) from unfunded defined benefit plan liability arising during the period, net of tax of $154 and ($12)	(260		)	23
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($23) and ($11)	41			21
Pension plan liability adjustment, net	(219		)	44
Total comprehensive income	$	46,689		$	29,136

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Covered Assets and FDIC Loss-sharing Asset (Covered OREO at Carrying Value) (Details) (Covered OREO [Member], USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Covered OREO [Member]
Balance, beginning of period	$ 23,730	$ 14,443
Established through acquisitions	0	10,387
Transfers in, net of write-downs ($952 for Q3 2011 and $1393 for Q3 2011YTD)	2,979	8,071
Writedowns Previously Recorded On Transfer In Of Real Estate Acquired Through Foreclosure	(952)	(1,393)
OREO improvements	0	0
Additional OREO write-downs	(189)	(302)
Proceeds from sale of OREO property	(3,523)	(14,604)
Gain on sale of covered OREO	1,838	6,840
Balance, end of period	$ 24,835	$ 24,835

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Goodwill and Intangible Assets (Summary of Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011
Future Amortization Expense For Core Deposit Intangibles
2011	$ 1,203
2012	4,445
2013	3,964
2014	3,397
2015	$ 2,645

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Securities

9 Months Ended

Sep. 30, 2011

Available-for-sale Securities [Abstract]

Securities

Securities

The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2011:
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	623,934	$	21,698	$	(906	)	$	644,726
State and municipal securities	256,343		20,189		(115		)	276,417
U.S. government and government-sponsored enterprise securities	70,857		523		—			71,380
Other securities	3,281		77		(27		)	3,331
Total	$	954,415	$	42,487	$	(1,048	)	$	995,854
December 31, 2010:
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	491,530	$	16,139	$	(1,027	)	$	506,642
State and municipal securities	249,117		7,247		(2,383		)	253,981
Other securities	3,281		—		(38		)	3,243
Total	$	743,928	$	23,386	$	(3,448	)	$	763,866

The scheduled contractual maturities of investment securities available for sale at September 30, 2011 are presented as follows:

	September 30, 2011
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	43,868	$	44,136
Due after one year through five years	91,742		94,242
Due after five years through ten years	168,119		176,815
Due after ten years	647,405		677,330
Total investment securities available-for-sale	$	951,134	$	992,523

The following table summarizes, as of September 30, 2011, the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:

(in thousands)	Carrying Amount
To Washington and Oregon State to secure public deposits	$	237,671
To Federal Home Loan Bank to secure advances	95,139
To Federal Reserve Bank to secure borrowings	55,947
Other securities pledged	50,080
Total securities pledged as collateral	$	438,837

The following tables show the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2011 and December 31, 2010:

September 30, 2011
	Less than 12 Months					12 Months or More					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	119,998	$	(905	)	$	275	$	(1	)	$	120,273	(906		)
State and municipal securities	11,558		(97		)	1,204		(18		)	12,762		(115		)
U.S. government and government-sponsored enterprise securities	100		—			—		—			100		—
Other securities	—		—			973		(27		)	973		(27		)
Total	$	131,656	$	(1,002	)	$	2,452	$	(46	)	$	134,108	$	(1,048	)
December 31, 2010
	Less than 12 Months					12 Months or More					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	86,529	$	(1,025	)	$	588	$	(2	)	$	87,117	$	(1,027	)
State and municipal securities	74,755		(2,099		)	2,792		(284		)	77,547		(2,383		)
Other securities	2,275		(6		)	968		(32		)	3,243		(38		)
Total	$	163,559	$	(3,130	)	$	4,348	$	(318	)	$	167,907	$	(3,448	)

The unrealized losses on the above securities are primarily attributable to increases in market interest rates subsequent to their purchase by the Company. Management does not intend to sell any impaired securities nor does available evidence suggest it is more likely than not that management will be required to sell any impaired securities. The Company’s securities portfolio does not include any private label mortgage backed securities or investments in trust preferred securities. Management believes the nature of securities in the Company’s investment portfolio present a very high probability of collecting all contractual amounts due, as the majority of the securities held are backed by government agencies or government-sponsored enterprises. However, this recovery in value may not occur for some time, perhaps greater than the one-year time horizon or perhaps even at maturity.

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Derivatives and Hedging Activities

9 Months Ended

Sep. 30, 2011

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives and Hedging Activities

Derivatives and Hedging Activities

The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings.

The following table presents the fair value of derivative instruments at September 30, 2011 and 2010:

	Asset Derivatives						Liability Derivatives
As of September 30,	2011			2010			2011			2010
(in thousands)	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Interest rate contracts	Other assets	$	16,463	Other assets	$	13,623	Other liabilities	$	16,463	Other liabilities	$	13,623

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Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Impaired loans Fair value	$ 3,717	$ 3,717
Non-covered OREO Fair value	2,876	2,876
Financial assets accounted for fair value on nonrecurring basis total	6,593	6,593
Impaired loans Losses	735	4,707
Non-covered OREO Losses	573	3,120
Financial assets Losses accounted for nonrecurring basis total	1,308	7,827
Fair Value, Inputs, Level 1 [Member]
Impaired loans Fair value	0	0
Non-covered OREO Fair value	0	0
Financial assets accounted for fair value on nonrecurring basis total	0	0
Fair Value, Inputs, Level 2 [Member]
Impaired loans Fair value	0	0
Non-covered OREO Fair value	0	0
Financial assets accounted for fair value on nonrecurring basis total	0	0
Fair Value, Inputs, Level 3 [Member]
Impaired loans Fair value	3,717	3,717
Non-covered OREO Fair value	2,876	2,876
Financial assets accounted for fair value on nonrecurring basis total	$ 6,593	$ 6,593

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Comprehensive Income (Schedule of Comprehensive Income) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income as reported	$ 18,872	$ 5,204	$ 33,283	$ 18,176
Net unrealized holding gain from available for sale securities arising during the period (net of tax)	4,988	4,739	13,768	11,897
Reclassification adjustment of net gain from sale of available for sale securities included in income (net of tax)	0	0	0	(38)
Net unrealized gain from securities, net of reclassification adjustment	4,988	4,739	13,768	11,859
Cash flow hedging instruments: Reclassification adjustment of net gain included in income (net of tax)	0	(216)	(143)	(943)
Net change in cash flow hedging instruments	0	(216)	(143)	(943)
Pension plan liability adjustment: Net unrealized gain from unfunded defined benefit plan liability arising during the period (net of tax)	0	0	(260)	23
Pension plan liability adjustment: Less: amortization of unrecognized net actuarial loss included in net periodic pension cost	14	7	41	21
Pension plan liability adjustment, net	14	7	(219)	44
Total comprehensive income	23,874	9,734	46,689	29,136
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	2,808	2,611	7,733	6,553
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	0	0	0	(20)
Cash flow hedging instruments: Reclassification adjustment of net gain included in income, tax	0	(119)	(79)	(520)
Net unrealized gain loss from unfunded defined benefit plan liability arising during period, tax	0	0	(154)	12
Amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ 8	$ 4	$ 23	$ 11

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Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) (USD $) In Thousands	Sep. 30, 2011
Available-for-sale Securities [Abstract]
Due within one year, Amortized Cost	$ 43,868
Due after one year through five years, Amortized Cost	91,742
Due after five years through ten years, Amortized Cost	168,119
Due after ten years, Amortized Cost	647,405
Total investment securities available-for-sale, Amortized Cost	951,134
Due within one year, Fair Value	44,136
Due after one year through five years, Fair Value	94,242
Due after five years through ten years, Fair Value	176,815
Due after ten years, Fair Value	677,330
Total investment securities available-for-sale, Fair Value	$ 992,523

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Changes in Noncovered Other Real Estate Owned (Tables)

9 Months Ended

Sep. 30, 2011

Other Real Estate and Foreclosed Assets [Abstract]

Summary of Noncovered Other Real Estate Owned

The following table sets forth activity in noncovered OREO for the period:

	Three Months Ended			Nine Months Ended
(in thousands)	September 30, 2011			September 30, 2011
Noncovered OREO:
Balance, beginning of period	$	22,739		$	30,991
Transfers in, net of write-downs ($0 and $108, respectively)	5,287			8,434
OREO improvements	257			726
Additional OREO write-downs	(644		)	(5,090		)
Proceeds from sale of OREO property	(2,359		)	(10,234		)
Gain (loss) on sale of OREO	(224		)	229
Total noncovered OREO, end of period	$	25,056		$	25,056

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Consolidated Condensed Statements of Changes in Shareholders' Equity (USD $) In Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Balance, value at Dec. 31, 2009	$ 528,139	$ 74,301	$ 348,706	$ 93,316	$ 11,816
Balance, shares at Dec. 31, 2009		77	28,129
Comprehensive Income
Net income	18,176			18,176
Other comprehensive income, net of tax:
Net unrealized gain from securities, net of reclassification adjustments	11,859				11,859
Net change in cash flow hedging instruments	(943)				(943)
Net pension plan liability adjustment	44				44
Other comprehensive income	10,960
Total comprehensive income	29,136
Redemption of preferred stock and common stock warrant		(76,898)	(3,302)
Accretion of preferred stock discount (in shares)		77
Accretion of preferred stock discount, Value	0	2,597		(2,597)
Issuance of common stock, net of offering costs, value	229,129		229,129
Issuance of common stock, net of offering costs, shares			11,040
Issuance of common stock - stock option and other plans, value	864		864
Issuance of common stock - stock option and other plans, shares			65
Issuance of common stock - restricted stock awards, net of cancelled awards, value	1,054		1,054
Issuance of common stock - restricted stock awards, net of cancelled awards, shares			94
Tax benefit deficiency associated with share-based compensation	(13)		(13)
Preferred dividends	(2,349)			(2,349)
Cash dividends paid on common stock	(1,068)			(1,068)
Balance, value at Sep. 30, 2010	704,692	0	576,438	105,478	22,776
Balance, shares at Sep. 30, 2010		0	39,328
Balance, value at Dec. 31, 2010	706,878	0	576,905	117,692	12,281
Balance, shares at Dec. 31, 2010		0	39,338
Comprehensive Income
Net income	33,283			33,283
Other comprehensive income, net of tax:
Net unrealized gain from securities, net of reclassification adjustments	13,768				13,768
Net change in cash flow hedging instruments	(143)				(143)
Net pension plan liability adjustment	(219)				(219)
Other comprehensive income	13,406
Total comprehensive income	46,689
Issuance of common stock - stock option and other plans, value	792		792
Issuance of common stock - stock option and other plans, shares			47
Issuance of common stock - restricted stock awards, net of cancelled awards, value	1,163		1,163
Issuance of common stock - restricted stock awards, net of cancelled awards, shares			119
Repurchase of shares, shares			(2)
Repurchase of shares, value	(32)		(32)
Cash dividends paid on common stock	(5,524)			(5,524)
Balance, value at Sep. 30, 2011	$ 749,966	$ 0	$ 578,828	$ 145,451	$ 25,687
Balance, shares at Sep. 30, 2011		0	39,502

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Basis of Presentation and Significant Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2011

Basis of Presentation And Significant Accounting Policies

Earnings Per Share

Basic Earnings per Share (“EPS”) is computed by dividing income applicable to common shareholders by the weighted average number of common shares outstanding for the period. Common shares outstanding include common stock and vested restricted stock awards where recipients have satisfied the vesting terms. Diluted EPS reflects the assumed conversion of all dilutive securities, applying the treasury stock method. The Company calculates earnings per share using the two-class method as described in the Earnings per Share topic of the FASB Accounting Standards Codification (“ASC”).

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Noncovered Loans (Analysis of Nonaccrual Loans) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Recorded Investment Nonaccrual Loans	$ 55,052	$ 89,301
Unpaid Principal Balance Nonaccrual Loans	89,782	127,001
Commercial Business [Member] | Secured Debt [Member]
Recorded Investment Nonaccrual Loans	9,594	32,368
Unpaid Principal Balance Nonaccrual Loans	18,025	44,316
Commercial Business [Member] | Unsecured Debt [Member]
Recorded Investment Nonaccrual Loans	301	0
Unpaid Principal Balance Nonaccrual Loans	1,244	327
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Recorded Investment Nonaccrual Loans	3,872	4,093
Unpaid Principal Balance Nonaccrual Loans	7,355	6,279
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment Nonaccrual Loans	7,135	11,716
Unpaid Principal Balance Nonaccrual Loans	9,740	12,737
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment Nonaccrual Loans	9,845	7,407
Unpaid Principal Balance Nonaccrual Loans	10,908	8,990
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Recorded Investment Nonaccrual Loans	7,817	11,608
Unpaid Principal Balance Nonaccrual Loans	15,952	21,344
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Recorded Investment Nonaccrual Loans	3,164	6,503
Unpaid Principal Balance Nonaccrual Loans	4,691	11,547
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment Nonaccrual Loans	7,622	7,585
Unpaid Principal Balance Nonaccrual Loans	14,963	12,916
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment Nonaccrual Loans	0	0
Unpaid Principal Balance Nonaccrual Loans	0	0
Consumer [Member]
Recorded Investment Nonaccrual Loans	3,545	5,022
Unpaid Principal Balance Nonaccrual Loans	$ 4,390	$ 5,192

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Business Combinations (Tables)

9 Months Ended

Sep. 30, 2011

Summit Bank [Member]

Summary of the Amounts Recognized as of the Acquisition Date for Each Major Class of Assets Acquired and Liabilities Assumed

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	May 20, 2011
	(in thousands)
Assets
Cash and due from banks	$	1,837
Interest-earning deposits with banks and federal funds sold	14,198
Investment securities	871
Federal Home Loan Bank stock	406
Acquired loans	69,783
Accrued interest receivable	429
Premises and equipment	42
FDIC receivable	6,984
Other real estate owned covered by loss sharing	2,162
Goodwill	2,919
Core deposit intangible	509
FDIC indemnification asset	30,203
Other assets	786
Total assets acquired	$	131,129
Liabilities
Deposits	$	123,279
Federal Home Loan Bank advances	7,772
Accrued interest payable	71
Other liabilities	7
Total liabilities assumed	$	131,129

First Heritage Bank [Member]

Summary of the Amounts Recognized as of the Acquisition Date for Each Major Class of Assets Acquired and Liabilities Assumed

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	May 27, 2011
	(in thousands)
Assets
Cash and due from banks	$	4,688
Interest-earning deposits with banks	6,689
Investment securities	5,303
Federal Home Loan Bank stock	477
Acquired loans	81,488
Accrued interest receivable	476
Premises and equipment	5,339
FDIC receivable	4,751
Other real estate owned covered by loss sharing	8,225
Goodwill	5,876
Core deposit intangible	1,337
FDIC indemnification asset	38,531
Other assets	1,804
Total assets acquired	$	164,984
Liabilities
Deposits	$	159,525
Federal Home Loan Bank advances	5,003
Accrued interest payable	421
Other liabilities	35
Total liabilities assumed	$	164,984

Bank of Whitman [Member]

Summary of the Amounts Recognized as of the Acquisition Date for Each Major Class of Assets Acquired and Liabilities Assumed

The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:

	August 5, 2011
	(in thousands)
Assets
Cash and due from banks	$	52,072
Investment securities	16,298
Federal Reserve Bank and Federal Home Loan Bank stock	3,977
Acquired loans	200,041
Accrued interest receivable	1,975
Premises and equipment	86
FDIC receivable	156,710
Core deposit intangible	3,943
Other assets	2,447
Total assets acquired	$	437,549
Liabilities
Deposits	401,127
Federal Home Loan Bank advances	32,949
Accrued interest payable	213
Deferred tax liability	1,034
Other liabilities	396
Total liabilities assumed	$	435,719
Net assets acquired (after tax gain)	$	1,830

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Basis of Presentation and Significant Accounting Policies

9 Months Ended

Sep. 30, 2011

Basis of Presentation And Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The interim unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for condensed interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain financial information and footnotes have been omitted or condensed. The consolidated condensed financial statements include the accounts of the Company, and its wholly owned banking subsidiary Columbia Bank (the “Bank”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the nine months ended September 30, 2011 are not necessarily indicative of results to be anticipated for the year ending December 31, 2011. The accompanying interim unaudited consolidated condensed financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2010 Annual Report on Form 10-K.

Significant Accounting Policies

The significant accounting policies used in preparation of our consolidated financial statements are disclosed in our 2010 Annual Report on Form 10-K. Other than as discussed below, there have not been any changes in our significant accounting policies compared to those contained in our 2010 10-K disclosure for the year ended December 31, 2010.

Discounted Loans

Discounted loans are the loans acquired through acquisitions or direct purchase for which we believe a credit loss is not probable at the time of acquisition.  Discounted loans are included on the consolidated condensed balance sheet in the “Loans, excluding covered loans” line item. Generally these loans as a group do not exhibit pervasive indications of declines in credit quality from the time of initial origination.  Discounted loans are recorded at fair value at the time of acquisition.  The estimate of fair value includes a discount related to credit risk and a premium or discount related to interest rates that is recorded for each loan separately.   Interest income is recognized through the accrual of interest at the loans' stated rates, plus accretion or amortization of the discount or premium recorded at acquisition.  Credit losses for discounted loans are recorded through the provision for loan losses using a similarmethodology as originated loans.  However, the amount of expected incurred loss of unpaid principal must be compared to the net carrying value which includes the remaining discount or premium. Currently none of our discounted loans are covered by indemnification agreements with the FDIC. 

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2011

Goodwill And Intangible Assets

Goodwill and Intangible Assets

Goodwill and Intangible Assets

In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment during the third quarter on an annual basis and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. During the current quarter, the Company analyzed its goodwill for potential impairment utilizing the guidance in ASU 2011-08, Testing Goodwill for Impairment. The Company determined through an assessment of qualitative factors that it was not more likely than not that the fair value of the Company's single reporting unit was less than its carrying amount, and therefore determined it was unnecessary to perform the two-step impairment test.

The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of approximately 10 years.

The following table sets forth activity for goodwill and intangible assets for the period:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands)	2011			2010			2011			2010
Total goodwill, beginning of period	$	118,434		$	109,639		$	109,639		$	95,519
Established through acquisitions	—			—			8,795			14,120
Total goodwill, end of period	118,434			109,639			118,434			109,639
Gross core deposit intangible balance, beginning of period	28,497			26,651			26,651			8,896
Accumulated amortization, beginning of period	(9,894		)	(5,874		)	(7,955		)	(4,032		)
Core deposit intangible, net, beginning of period	18,603			20,777			18,696			4,864
Established through acquisitions	3,943			—			5,789			17,755
CDI current period amortization	(1,177		)	(1,044		)	(3,116		)	(2,886		)
Total core deposit intangible, end of period	21,369			19,733			21,369			19,733
Total goodwill and intangible assets, end of period	$	139,803		$	129,372		$	139,803		$	129,372

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2011 and the succeeding four years:

(in thousands)	Amount
Year ending December 31,
2011	$	1,203
2012	4,445
2013	3,964
2014	3,397
2015	2,645

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Covered Assets and FDIC Loss-sharing Asset (Carrying Amounts For Acquired Loans At Acquisition Date) (Details) (USD $) In Thousands	May 27, 2011 First Heritage Bank [Member]		May 20, 2011 Summit Bank [Member]
Contractually required payments of interest and principal	$ 151,611		$ 127,823
Nonaccretable difference	(34,052)		(34,301)
Cash flows expected to be collected	117,559	[1]	93,522	[1]
Accretable yield	(36,071)		(23,739)
Carrying value of acquired loans	$ 81,488		$ 69,783

[1] Represents undiscounted expected principal and interest cash flows

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Goodwill and Intangible Assets (Narrative) (Details)	9 Months Ended
	Sep. 30, 2011
Goodwill And Intangible Assets
Estimated life of CDI, in years	10

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Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2011

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Schedule of Fair Value Derivative Instruments

The following table presents the fair value of derivative instruments at September 30, 2011 and 2010:

	Asset Derivatives						Liability Derivatives
As of September 30,	2011			2010			2011			2010
(in thousands)	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Interest rate contracts	Other assets	$	16,463	Other assets	$	13,623	Other liabilities	$	16,463	Other liabilities	$	13,623

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2011

Fair Value Of Financial Instruments

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash and due from banks and interest-earning deposits with banks—The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value.

Securities available for sale—Securities at fair value are priced using matrix pricing based on the securities’ relationship to other benchmark quoted prices.

Federal Home Loan Bank stock—The fair value is based upon the par value of the stock which equates to its carrying value.

Loans—Loans are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on September 30, 2011 for loans which mirror the attributes of the loans with similar rate structures and average maturities. Commercial loans and construction loans, which are variable rate and short-term are reflected with fair values equal to carrying value. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC.

FDIC loss-sharing asset —The FDIC loss-sharing asset is considered to have a fair value that approximates carrying value.

Interest rate contracts—Interest rate swap positions are valued in models, which use as their basis, readily observable market parameters.

Deposits—For deposits with no contractual maturity, the fair value is equal to the carrying value. The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities.

FHLB and FRB borrowings—The fair value of Federal Home Loan Bank of Seattle (the “FHLB”) advances and Federal Reserve Bank of San Francisco (the “FRB”) borrowings are estimated based on discounting the future cash flows using the market rate currently offered.

Repurchase Agreements—The fair value of securities sold under agreement to repurchase are estimated based on discounting the future cash flows using the market rate currently offered.

Long-term subordinated debt—The fair value of long-term subordinated debt are estimated based on discounting the future cash flows using an estimated market rate.

Other Financial Instruments—The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value.

The following table summarizes carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value:

	September 30, 2011				December 31, 2010
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets
Cash and due from banks	$	97,432	$	97,432	$	55,492	$	55,492
Interest-earning deposits with banks	250,030		250,030		458,638		458,638
Securities available for sale	995,854		995,854		763,866		763,866
FHLB stock	22,215		22,215		17,908		17,908
Loans held for sale	2,568		2,568		754		754
Loans	2,778,282		3,039,531		2,371,822		2,525,113
FDIC loss-sharing asset	193,869		193,869		205,991		205,991
Interest rate contracts	16,463		16,463		10,167		10,167
Liabilities
Deposits	$	3,795,499	$	3,797,901	$	3,327,269	$	3,330,616
FHLB Advances	122,642		124,358		119,405		122,722
Repurchase agreements	25,000		27,022		25,000		27,251
Other borrowings	—		—		642		642
Long-term subordinated debt	—		—		25,735		20,156
Interest rate contracts	16,463		16,463		10,167		10,167

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Consolidated Condensed Statements of Income (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Interest Income
Loans	$ 59,655	$ 44,882	$ 151,446	$ 120,769
Taxable securities	6,037	4,660	16,701	14,113
Tax-exempt securities	2,500	2,252	7,483	6,988
Federal funds sold and deposits in banks	240	281	722	640
Total interest income	68,432	52,075	176,352	142,510
Interest Expense
Deposits	2,642	4,007	8,569	13,282
Federal Home Loan Bank advances	807	716	2,215	2,131
Long-term obligations	75	266	579	769
Other borrowings	120	121	377	357
Total interest expense	3,644	5,110	11,740	16,539
Net Interest Income	64,788	46,965	164,612	125,971
Provision for loan and lease losses	500	9,000	2,650	37,500
Provision for losses on covered loans	433	453	2,312	453
Net interest income after provision for loan and lease losses	63,855	37,512	159,650	88,018
Noninterest Income (Loss)
Service charges and other fees	6,991	6,518	19,746	18,384
Gain on bank acquisitions, net of tax	1,830	0	1,830	9,818
Merchant services fees	1,952	2,051	5,393	5,700
Gain on sale of investment securities, net	0	0	0	58
Bank owned life insurance	523	521	1,556	1,541
Change in FDIC loss sharing asset	(10,855)	(4,536)	(32,048)	(1,137)
Other	1,755	629	3,842	2,529
Total noninterest income (loss)	2,196	5,183	319	36,893
Noninterest Expense
Compensation and employee benefits	21,392	17,574	59,772	52,057
Occupancy	4,815	4,278	13,600	12,554
Merchant processing	976	934	2,764	2,697
Advertising and promotion	1,137	630	3,050	2,253
Data processing and communications	2,195	2,477	6,032	6,923
Legal and professional fees	1,957	1,609	4,868	4,584
Taxes, licenses and fees	1,211	803	2,983	2,055
Regulatory premiums	574	1,952	3,553	4,910
Net cost of operation of other real estate owned	(195)	(1,442)	(423)	(802)
Amortization of intangibles	1,177	1,044	3,116	2,886
FDIC clawback liability	1,146	0	3,294	0
Other	3,550	3,661	11,836	12,045
Total noninterest expense	39,935	33,520	114,445	102,162
Income before income taxes	26,116	9,175	45,524	22,749
Income tax provision	7,244	3,971	12,241	4,573
Net Income	18,872	5,204	33,283	18,176
Net Income Applicable to Common Shareholders	$ 18,872	$ 2,474	$ 33,283	$ 13,229
Earnings per common share
Basic ($ per share)	$ 0.48	$ 0.06	$ 0.84	$ 0.39
Diluted ($ per share)	$ 0.48	$ 0.06	$ 0.84	$ 0.38
Dividends paid per common share ($ per share)	$ 0.06	$ 0.01	$ 0.14	$ 0.03
Weighted average number of common shares outstanding	39,131	38,976	39,092	33,938
Weighted average number of diluted common shares outstanding	39,192	39,137	39,167	34,142

XML

Business Combinations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		3 Months Ended									3 Months Ended		3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Summit Bank [Member] Federal Deposit Insurance Corporation Indemnification Asset [Member]	Sep. 30, 2011 First Heritage Bank [Member] Federal Deposit Insurance Corporation Indemnification Asset [Member]	Sep. 30, 2011 Summit Bank [Member] Loans Receivable [Member]	Sep. 30, 2011 First Heritage Bank [Member] Loans Receivable [Member]	Sep. 30, 2011 Summit Bank [Member] Goodwill [Member]	Sep. 30, 2011 First Heritage Bank [Member] Goodwill [Member]	Sep. 30, 2011 Summit Bank [Member] Other Real Estate Owned [Member]	Sep. 30, 2011 Summit Bank [Member]	May 20, 2011 Summit Bank [Member]	Sep. 30, 2011 First Heritage Bank [Member]	May 27, 2011 First Heritage Bank [Member]	Sep. 30, 2011 Bank of Whitman [Member]	Aug. 05, 2011 Bank of Whitman [Member]	Sep. 30, 2011 Covered Assets [Member]
Acquisition date										May 20, 2011		May 27, 2011		August 5, 2011
Business combination adjustments to provisional information			$ 3,029	$ 427	$ (1,669)	$ (369)	$ (851)	$ (58)	$ (509)
Percentage of loss shared by FDIC																80.00%
Percentage of Loss Recovery Shared by FDIC																80.00%
Goodwill											(2,919)		(5,876)
Bargain purchase gain, net of tax	1,830	9,818												1,830
Core deposit intangible											$ 509		$ 1,337		$ 3,943

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Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit (Allowance for Noncovered Loan and Lease Losses) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 54,057	$ 59,748	$ 60,993	$ 53,478
Loans charged off	(4,872)	(7,540)	(16,653)	(31,466)
Recoveries	737	1,126	3,432	2,822
Provision	500	9,000	2,650	37,500
Ending balance	50,422	62,334	50,422	62,334
Commercial Business [Member] | Secured Debt [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	22,320		21,811
Loans charged off	(1,904)		(6,025)
Recoveries	420		749
Provision	2,462		6,763
Ending balance	23,298		23,298
Specific Reserve	54		54
General Allocation	23,244		23,244
Commercial Business [Member] | Unsecured Debt [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	573		738
Loans charged off	(42)		(126)
Recoveries	40		408
Provision	167		(282)
Ending balance	738		738
Specific Reserve	0		0
General Allocation	738		738
Real Estate One-To-Four Family [Member] | Residential [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	847		1,100
Loans charged off	(53)		(717)
Recoveries	78		78
Provision	70		481
Ending balance	942		942
Specific Reserve	0		0
General Allocation	942		942
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	894		634
Loans charged off	(4)		(660)
Recoveries	0		0
Provision	(130)		786
Ending balance	760		760
Specific Reserve	0		0
General Allocation	760		760
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	14,709		15,210
Loans charged off	(339)		(979)
Recoveries	10		65
Provision	(5,407)		(5,323)
Ending balance	8,973		8,973
Specific Reserve	297		297
General Allocation	8,676		8,676
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	6,479		9,692
Loans charged off	(100)		(723)
Recoveries	0		31
Provision	311		(2,310)
Ending balance	6,690		6,690
Specific Reserve	408		408
General Allocation	6,282		6,282
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,852		3,769
Loans charged off	(169)		(1,347)
Recoveries	63		1,831
Provision	269		(1,238)
Ending balance	3,015		3,015
Specific Reserve	175		175
General Allocation	2,840		2,840
Construction One-To-Four Family Residential[Member] | Residential Construction [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,704		2,292
Loans charged off	(14)		(1,068)
Recoveries	56		92
Provision	(222)		208
Ending balance	1,524		1,524
Specific Reserve	0		0
General Allocation	1,524		1,524
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	43		274
Loans charged off	(145)		(1,710)
Recoveries	0		0
Provision	157		1,491
Ending balance	55		55
Specific Reserve	0		0
General Allocation	55		55
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	34		70
Loans charged off	0		0
Recoveries	0		0
Provision	(7)		(43)
Ending balance	27		27
Specific Reserve	0		0
General Allocation	27		27
Consumer [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,748		2,120
Loans charged off	(2,102)		(3,298)
Recoveries	70		178
Provision	2,985		4,701
Ending balance	3,701		3,701
Specific Reserve	32		32
General Allocation	3,669		3,669
Unallocated [Member] | Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	854		3,283
Loans charged off	0		0
Recoveries	0		0
Provision	(155)		(2,584)
Ending balance	699		699
Specific Reserve	0		0
General Allocation	699		699
Noncovered Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	54,057		60,993
Loans charged off	(4,872)		(16,653)
Recoveries	737		3,432
Provision	500		2,650
Ending balance	50,422		50,422
Specific Reserve	966		966
General Allocation	$ 49,456		$ 49,456

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Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
(Amortization) accretion			$ 2,612	$ 10,105
Other	(1,755)	(629)	(3,842)	(2,529)
FDIC Loss-sharing Asset [Member]
Balance at beginning of period	209,694	226,745	205,991	0
Established through acquisitions	0	0	68,734	210,405
Cash received from the FDIC	(6,108)	(11,198)	(51,000)	(11,198)
FDIC reimbursable losses, net	1,138	416	2,192	13,357
(Amortization) accretion	(9,333)	2,401	(24,974)	6,353
Loan loss provision	921	0	2,424	0
Other	(2,443)	(6,937)	(9,498)	(7,490)
Balance at end of period	$ 193,869	$ 211,427	$ 193,869	$ 211,427

XML

Derivatives and Hedging Activities (Schedule of Fair Value Derivative Instruments) (Details) (Derivatives Not Designated as Hedging Instruments [Member], Interest Rate Contracts [Member], USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Other Assets [Member]
Fair value of asset derivative instruments	$ 16,463	$ 13,623
Other Liabilities [Member]
Fair value of liability derivative instruments	$ 16,463	$ 13,623

XML

Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Loans	$ 2,192,337	$ 1,819,499
30 - 59 Days Past Due	7,845	3,464
60 - 89 Days Past Due	2,665	7,117
Greater than 90 Days Past Due	0	1
Total Past Due	10,510	10,582
Nonaccrual Loans	55,052	89,163
Loans Receivable, Net	2,257,899	1,919,244
Commercial Business [Member] | Secured Debt [Member]
Current Loans	905,270	720,926
30 - 59 Days Past Due	847	919
60 - 89 Days Past Due	579	692
Greater than 90 Days Past Due	0	1
Total Past Due	1,426	1,612
Nonaccrual Loans	9,594	31,919
Loans Receivable, Net	916,290	754,457
Commercial Business [Member] | Unsecured Debt [Member]
Current Loans	57,118	40,455
30 - 59 Days Past Due	1,359	9
60 - 89 Days Past Due	58	0
Greater than 90 Days Past Due	0	0
Total Past Due	1,417	9
Nonaccrual Loans	301	448
Loans Receivable, Net	58,836	40,912
Real Estate One-To-Four Family [Member] | Residential [Member]
Current Loans	61,073	46,167
30 - 59 Days Past Due	239	220
60 - 89 Days Past Due	204	0
Greater than 90 Days Past Due	0	0
Total Past Due	443	220
Nonaccrual Loans	2,157	2,996
Loans Receivable, Net	63,673	49,383
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Current Loans	44,260	18,979
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	1,752
Greater than 90 Days Past Due	0	0
Total Past Due	0	1,752
Nonaccrual Loans	3,872	4,091
Loans Receivable, Net	48,132	24,822
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Current Loans	519,034	426,320
30 - 59 Days Past Due	352	1,208
60 - 89 Days Past Due	10	121
Greater than 90 Days Past Due	0	0
Total Past Due	362	1,329
Nonaccrual Loans	7,135	10,745
Loans Receivable, Net	526,531	438,394
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Current Loans	378,541	318,508
30 - 59 Days Past Due	2,488	497
60 - 89 Days Past Due	931	3,752
Greater than 90 Days Past Due	0	0
Total Past Due	3,419	4,249
Nonaccrual Loans	9,845	8,356
Loans Receivable, Net	391,805	331,113
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Current Loans	16,640	24,883
30 - 59 Days Past Due	1,084	214
60 - 89 Days Past Due	436	205
Greater than 90 Days Past Due	0	0
Total Past Due	1,520	419
Nonaccrual Loans	7,817	11,604
Loans Receivable, Net	25,977	36,906
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Current Loans	22,781	24,655
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	3,164	6,400
Loans Receivable, Net	25,945	31,055
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Current Loans	5,168	10,666
30 - 59 Days Past Due	1,011	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	1,011	0
Nonaccrual Loans	7,622	7,584
Loans Receivable, Net	13,801	18,250
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Current Loans	10,358	11,935
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	10,358	11,935
Consumer [Member]
Current Loans	172,094	176,005
30 - 59 Days Past Due	465	397
60 - 89 Days Past Due	447	595
Greater than 90 Days Past Due	0	0
Total Past Due	912	992
Nonaccrual Loans	3,545	5,020
Loans Receivable, Net	$ 176,551	$ 182,017

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Noncovered Loans (Analysis of Impaired Loans) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 2,198,303	$ 1,828,071
Recorded Investment of Loans Individually Measured for Specific Impairment	59,596	91,173
Average Recorded Investment Impaired Loans	74,253
Interest Recognized on Impaired Loans	1,029
Commercial Business [Member] | Impaired Loans With Recorded Allowance [Member] | Secured Debt [Member]
Recorded Investment	273	2,717
Unpaid Principal Balance	273	2,758
Related Allowance	54	600
Commercial Business [Member] | Secured Debt [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	908,699	724,665
Recorded Investment of Loans Individually Measured for Specific Impairment	7,591	29,793
Average Recorded Investment Impaired Loans	17,251
Interest Recognized on Impaired Loans	16
Commercial Business [Member] | Secured Debt [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	7,318	27,081
Unpaid Principal Balance	14,810	26,913
Commercial Business [Member] | Impaired Loans With Recorded Allowance [Member] | Unsecured Debt [Member]
Recorded Investment	0	75
Unpaid Principal Balance	0	75
Related Allowance	0	75
Commercial Business [Member] | Unsecured Debt [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	58,548	40,808
Recorded Investment of Loans Individually Measured for Specific Impairment	288	104
Average Recorded Investment Impaired Loans	148
Interest Recognized on Impaired Loans	0
Commercial Business [Member] | Unsecured Debt [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	288	29
Unpaid Principal Balance	609	30
Real Estate One-To-Four Family [Member] | Impaired Loans With Recorded Allowance [Member] | Residential [Member]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Real Estate One-To-Four Family [Member] | Residential [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	61,629	46,728
Recorded Investment of Loans Individually Measured for Specific Impairment	2,044	2,655
Average Recorded Investment Impaired Loans	2,498
Interest Recognized on Impaired Loans	0
Real Estate One-To-Four Family [Member] | Residential [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	2,044	2,658
Unpaid Principal Balance	2,283	2,949
Real Estate Commercial & Multifamily Residential [Member] | Impaired Loans With Recorded Allowance [Member] | Commercial Land [Member]
Recorded Investment	0	3,062
Unpaid Principal Balance	0	5,225
Related Allowance	0	0
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	44,316	20,959
Recorded Investment of Loans Individually Measured for Specific Impairment	3,816	3,863
Average Recorded Investment Impaired Loans	4,380
Interest Recognized on Impaired Loans	0
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	3,816	804
Unpaid Principal Balance	6,781	826
Real Estate Commercial & Multifamily Residential [Member] | Impaired Loans With Recorded Allowance [Member] | Income Property Multifamily [Member]
Recorded Investment	2,588	3,094
Unpaid Principal Balance	3,512	3,139
Related Allowance	297	59
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	519,745	427,799
Recorded Investment of Loans Individually Measured for Specific Impairment	6,786	10,595
Average Recorded Investment Impaired Loans	9,444
Interest Recognized on Impaired Loans	526
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	4,198	10,292
Unpaid Principal Balance	5,673	12,253
Real Estate Commercial & Multifamily Residential [Member] | Impaired Loans With Recorded Allowance [Member] | Owner Occupied [Member]
Recorded Investment	1,528	0
Unpaid Principal Balance	2,186	0
Related Allowance	408	0
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	376,391	317,010
Recorded Investment of Loans Individually Measured for Specific Impairment	15,414	14,103
Average Recorded Investment Impaired Loans	15,427
Interest Recognized on Impaired Loans	298
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	13,886	14,152
Unpaid Principal Balance	16,616	17,099
Construction One-To-Four Family Residential[Member] | Impaired Loans With Recorded Allowance [Member] | Land and Acquisition [Member]
Recorded Investment	1,216	533
Unpaid Principal Balance	1,813	549
Related Allowance	175	3
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	17,550	25,362
Recorded Investment of Loans Individually Measured for Specific Impairment	8,427	11,543
Average Recorded Investment Impaired Loans	9,368
Interest Recognized on Impaired Loans	176
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	7,211	11,013
Unpaid Principal Balance	12,210	20,718
Construction One-To-Four Family Residential[Member] | Impaired Loans With Recorded Allowance [Member] | Residential Construction [Member]
Recorded Investment	0	915
Unpaid Principal Balance	0	1,723
Related Allowance	0	62
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	20,830	24,655
Recorded Investment of Loans Individually Measured for Specific Impairment	5,115	6,400
Average Recorded Investment Impaired Loans	4,397
Interest Recognized on Impaired Loans	0
Construction One-To-Four Family Residential[Member] | Residential Construction [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	5,115	5,585
Unpaid Principal Balance	6,563	9,824
Construction Commercial & Multifamily Residential [Member] | Impaired Loans With Recorded Allowance [Member] | Income Property Multifamily [Member]
Recorded Investment	0	6,792
Unpaid Principal Balance	0	10,515
Related Allowance	0	175
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	6,178	10,666
Recorded Investment of Loans Individually Measured for Specific Impairment	7,623	7,584
Average Recorded Investment Impaired Loans	7,064
Interest Recognized on Impaired Loans	0
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	7,623	792
Unpaid Principal Balance	14,963	2,401
Construction Commercial & Multifamily Residential [Member] | Impaired Loans With Recorded Allowance [Member] | Owner Occupied [Member]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	10,358	11,935
Recorded Investment of Loans Individually Measured for Specific Impairment	0	0
Average Recorded Investment Impaired Loans	0
Interest Recognized on Impaired Loans	0
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Consumer [Member] | Impaired Loans With Recorded Allowance [Member]
Recorded Investment	154	0
Unpaid Principal Balance	226	0
Related Allowance	32	0
Impaired Loans With Recorded Allowance [Member]
Recorded Investment	5,759	17,188
Unpaid Principal Balance	8,010	23,984
Related Allowance	966	974
Consumer [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	2,338	4,533
Unpaid Principal Balance	2,832	4,691
Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	53,837	76,939
Unpaid Principal Balance	83,340	97,704
Consumer [Member]
Recorded Investment of Loans Collectively Measured for Contingency Provision	174,059	177,484
Recorded Investment of Loans Individually Measured for Specific Impairment	2,492	4,533
Average Recorded Investment Impaired Loans	4,276
Interest Recognized on Impaired Loans	$ 13

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Covered Assets and FDIC Loss-sharing Asset (Changes in Accretable Yield for Acquired Loans) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Covered Assets And FDIC Loss Sharing Asset
Balance at beginning of period	$ 314,333	$ 256,572
Additions resulting from acquisitions	0	59,811
Accretion	(23,608)	(60,369)
Disposals	(8,594)	(24,134)
Reclassifications from nonaccretable difference	69	50,320
Balance at end of period	$ 282,200	$ 282,200

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Business Combinations (Summary of the Amounts Recognized as of the Acquisition Date for Each Major Class of Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Aug. 05, 2011 Bank of Whitman [Member]	May 20, 2011 Summit Bank [Member]	May 27, 2011 First Heritage Bank [Member]
Cash and due from banks			$ 52,072	$ 1,837	$ 4,688
Interest-earning deposits with banks and federal funds sold				14,198
Interest-earning deposits with banks					6,689
Investment securities			16,298	871	5,303
FHLB stock	22,215	17,908	3,977	406	477
Acquired loans			200,041	69,783	81,488
Accrued interest receivable	17,428	11,164	1,975	429	476
Premises and equipment			86	42	5,339
FDIC receivable			156,710	6,984	4,751
Other real estate owned covered by loss sharing				2,162	8,225
Goodwill				2,919	5,876
Core deposit intangible			3,943	509	1,337
Federal Deposit Insurance Corp Indemnification Asset				30,203	38,531
Other assets			2,447	786	1,804
Total assets acquired			437,549	131,129	164,984
Deposits			401,127	123,279	159,525
Federal Home Loan Bank advances			32,949	7,772	5,003
Accrued interest payable			213	71	421
Deferred tax liability			1,034
Other liabilities			396	7	35
Total liabilities assumed			435,719	131,129	164,984
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 1,830