Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net income	$ 14,272	$ 12,041
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	3,221	2,433
Amortization of intangible assets	157	125
Provision for loan losses	7,899	17,631
Amortization of investment securities premium, net	907	1,025
Originations of loans for resale	(162,082)	(87,677)
Proceeds from sale of loans originated for resale	160,286	82,956
Gain on sale of loans	(4,317)	(1,818)
Change in market value of mortgage servicing rights	1,513	1,022
Provision for losses on foreclosed assets	1,520	1,393
(Gain) loss on sale of foreclosed assets	(364)	(467)
Loss on disposal of fixed assets	404	15
Increase in cash value of life insurance	(1,350)	(1,350)
Gain on life insurance death benefit	(600)
Proceeds from life insurance	1,611
Stock option vesting expense	800	553
Stock option excess tax benefits	(21)	(296)
Bargain purchase gain		(7,575)
Change in reserve for unfunded commitments	(185)
Change in:
Interest receivable	(326)	(266)
Interest payable	(535)	(336)
Other assets and liabilities, net	9,563	3,258
Net cash from operating activities	32,373	22,667
Investing activities:
Proceeds from maturities of securities available-for-sale	58,395	57,479
Purchases of securities available-for-sale	(13,815)	(25,456)
Redemption (purchase) of restricted equity securities, net	963	(65)
Loan principal (increases) decreases, net	(40,098)	(9,112)
Proceeds from sale of foreclosed assets	11,281	5,168
Improvements of foreclosed assets	(474)
Proceeds from sale of premises and equipment	33	1
Purchases of premises and equipment	(7,077)	(2,505)
Cash received from acquisitions		80,706
Net cash from investing activities	9,208	106,216
Financing activities:
Net increase in deposits	11,103	28,151
Net change in other borrowings	(63,277)	(1,139)
Stock option excess tax benefits	21	296
Repurchase of common stock	(48)	(753)
Dividends paid	(4,317)	(4,304)
Exercise of stock options	156	436
Net cash (Used in) from financing activities	(56,362)	22,687
Net change in cash and cash equivalents	(14,781)	151,570
Cash and cash equivalents at beginning of period	637,275	371,066
Cash and cash equivalents at end of period	622,494	522,636
Supplemental disclosure of noncash activities:
Loans transferred to other real estate owned	5,816	5,638
Change in unrealized net gain on securities available for sale	(304)	3,724
Market value of shares tendered by employees in-lieu of cash to pay for exercise options and/or related taxes	48	1,992
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	6,507	8,245
Cash paid for income taxes	7,320	9,725
Assets acquired in acquisition		270,304
Liabilities acquired in acquisition		$ 262,729