Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 22,881	$ 18,217
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,944	2,057
Provision for loan losses	16,221	16,247
Deferred income taxes	(1,982)	5,091
Net amortization of debt securities	5,839	3,983
Amortization of intangible assets	1,440	490
Gain on sale of investment securities	(1,156)	(1,448)
Mortgage loans originated for sale	(71,085)	(48,772)
Proceeds from mortgage loans sold	68,987	49,147
Gain on sale of other real estate	(3,152)	(1,039)
Gain on state tax credits, net	(1,180)	(2,510)
Excess tax benefit of share-based compensation	(86)	(22)
Share-based compensation	1,791	1,120
Valuation adjustment on other real estate	2,201	3,261
Net accretion of loan discount and indemnification asset	(18,754)	(10,964)
Changes in:
Accrued interest receivable	(1,288)	165
Accrued interest payable	(385)	(501)
Prepaid FDIC insurance	1,837	2,336
Other assets	1,298	(6,294)
Other liabilities	12,567	(5,558)
Net cash provided by operating activities	37,938	25,006
Cash flows from investing activities:
Cash received from acquisition of Legacy Bank	0	8,926
Cash received from acquisition of The First National Bank of Olathe	0	112,778
Net increase in loans	(10,478)	(84,022)
Net cash proceeds received from FDIC loss share receivable	85,173	35,932
Proceeds from the sale of debt and equity securities, available for sale	110,876	84,456
Proceeds from the maturity of debt and equity securities, available for sale	91,498	122,934
Proceeds from the redemption of other investments	6,296	5,774
Proceeds from the sale of state tax credits held for sale	4,408	8,045
Proceeds from the sale of other real estate	44,273	27,429
Payments for the purchase/origination of:
Available for sale debt and equity securities	(214,935)	(255,210)
Other investments	(8,138)	(1,361)
State tax credits held for sale	(18,577)	0
Fixed assets	(4,433)	(416)
Net cash provided by investing activities	85,963	65,265
Cash flows from financing activities:
Net increase in noninterest-bearing deposit accounts	35,591	101,351
Net decrease in interest-bearing deposit accounts	(276,011)	(204,372)
Proceeds from Federal Home Loan Bank advances	157,500	0
Repayments of Federal Home Loan Bank advances	(133,500)	(23,254)
Net decrease in other borrowings	(7,440)	(20,332)
Cash dividends paid on common stock	(2,813)	(2,645)
Excess tax benefit of share-based compensation	86	22
Cash dividends paid on preferred stock	(1,312)	(1,313)
Issuance of common stock	0	32,608
Proceeds from the issuance of equity instruments	1,530	1,369
Net cash used in financing activities	(226,369)	(116,566)
Net decrease in cash and cash equivalents	(102,468)	(26,295)
Cash and cash equivalents, beginning of period	188,143	293,668
Cash and cash equivalents, end of period	85,675	267,373
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	17,487	23,442
Cash paid during the period for income taxes	10,953	16,871
Noncash transactions:
Transfer to other real estate owned in settlement of loans	19,799	20,287
Sales of other real estate financed	$ 5,264	$ 2,135