CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net earnings	$ 25,080	$ 13,494
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	6,653	7,292
(Negative provision) provision for credit losses	(644)	3,137
Gain on sale of other real estate owned	(2,323)	(1,910)
Provision for losses on other real estate owned	94	1,185
Gain on sale of leases	(106)	(225)
Gain on sale of premises and equipment	(1,571)
Gain on sale of securities	(4,752)	(409)
Earned stock compensation	1,611	1,764
Tax effect included in stockholders' equity of restricted stock vesting	(1,110)	(660)
Decrease in accrued and deferred income taxes, net	19,679	8,611
Decrease in FDIC loss sharing asset	10,896	1,635
Increase in other assets	(6,156)	(486)
Decrease in accrued interest payable and other liabilities	(20,107)	(7,601)
Net cash provided by operating activities	27,244	25,827
Cash flows from investing activities:
Net decrease in loans and leases	149,440	113,099
Proceeds from sale of loans and leases	1,128	3,054
Securities available-for-sale:
Proceeds from maturities and paydowns	33,860	100,980
Proceeds from sales	142,041	12,810
Purchases	(140,048)	(132,446)
Net redemptions of Federal Home Loan Bank stock	2,939	3,726
Proceeds from sales of other real estate owned	7,209	8,847
Purchases of premises and equipment, net	(1,115)	(742)
Proceeds from sales of premises and equipment	3,753
Net cash provided by investing activities	199,207	109,328
Net increase (decrease) in deposits:
Noninterest-bearing	73,163	2,022
Interest-bearing	15,258	(157,913)
Net decrease in borrowings	(107,953)	(1,362)
Restricted stock surrendered	(2,058)	(2,182)
Tax effect included in stockholders' equity of restricted stock vesting	1,110	660
Cash dividends paid	(11,306)	(9,106)
Net cash used in financing activities	(31,786)	(167,881)
Net decrease in cash and cash equivalents	194,665	(32,726)
Cash and cash equivalents, beginning of period	147,422	164,404
Cash and cash equivalents, end of period	342,087	131,678
Supplemental disclosures of cash flow information:
Cash paid for interest	2,483	4,063
Cash received for income taxes, net of payments	(5,693)	(760)
Loans transferred to other real estate owned	$ 13	$ 4,980