Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 29,483	$ 22,881
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,936	1,944
Provision for loan losses	(305)	16,221
Deferred income taxes	180	(1,982)
Net amortization of debt securities	4,579	5,839
Amortization of intangible assets	1,540	1,440
Gain on sale of investment securities	(1,295)	(1,156)
Mortgage loans originated for sale	(64,463)	(71,085)
Proceeds from mortgage loans sold	70,884	68,987
Gain on sale of other real estate	(1,562)	(3,152)
Gain on state tax credits, net	(1,214)	(1,180)
Share-based compensation	3,136	1,791
Valuation adjustment on other real estate	962	2,201
Net accretion of loan discount and indemnification asset	(13,853)	(18,754)
Changes in:
Accrued interest receivable	600	(1,288)
Accrued interest payable	(397)	(385)
Prepaid FDIC insurance	2,607	1,837
Other assets	(21,322)	1,212
Other liabilities	516	12,567
Net cash provided by operating activities	12,012	37,938
Cash flows from investing activities:
Net increase in loans	36,955	(10,478)
Net cash proceeds received from FDIC loss share receivable	9,654	85,173
Proceeds from the sale of debt and equity securities, available for sale	159,604	110,876
Proceeds from the maturity of debt and equity securities, available for sale	69,017	91,498
Proceeds from the redemption of other investments	26,695	6,296
Proceeds from the sale of state tax credits held for sale	8,126	4,408
Proceeds from the sale of other real estate	15,303	44,273
Payments for the purchase/origination of:
Available for sale debt and equity securities	(60,732)	(214,935)
Other investments	(28,143)	(8,138)
Payments to Acquire Life Insurance Policies	(20,000)	0
State tax credits held for sale	(1,365)	(18,577)
Fixed assets	(1,122)	(4,433)
Net cash provided by investing activities	213,992	85,963
Cash flows from financing activities:
Net increase in noninterest-bearing deposit accounts	(67,242)	35,591
Net decrease in interest-bearing deposit accounts	(143,691)	(276,011)
Proceeds from Federal Home Loan Bank advances	743,000	157,500
Repayments of Federal Home Loan Bank advances	(703,000)	(133,500)
Repayments of Long-term Debt	(900)	0
Repayments of Subordinated Debt	(2,000)	0
Net decrease in other borrowings	(66,005)	(7,440)
Cash dividends paid on common stock	(2,924)	(2,813)
Excess tax benefit of share-based compensation	83	86
Payments for Repurchase of Preferred Stock and Preference Stock	(1,006)	0
Cash dividends paid on preferred stock	0	(1,312)
Proceeds from the issuance of equity instruments	2,551	1,530
Net cash used in financing activities	(241,134)	(226,369)
Net decrease in cash and cash equivalents	(15,130)	(102,468)
Cash and cash equivalents, beginning of period	116,370	188,143
Cash and cash equivalents, end of period	101,240	85,675
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	14,470	17,487
Cash paid during the period for income taxes	24,348	10,953
Noncash transactions:
Transfer to other real estate owned in settlement of loans	21,116	19,799
Sales of other real estate financed	5,564	5,264
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 20,443	$ 0