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 Income	$ 19,844	$ 12,176
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses and losses on covered loans	1,922	(20)
Stock-based compensation expense	680	551
Depreciation, amortization and accretion	8,972	13,015
Net realized gain on sale of securities	223	370
Net realized gain on sale of other assets	8	(80)
Net realized (gain) loss on sale of other real estate owned	(1,659)	(2,787)
Write-down on other real estate owned	1,580	158
Net change in:
Loans held for sale	735	1,675
Interest receivable	(1,394)	(2,053)
Interest payable	(13)	(40)
Other assets	5,714	3,192
Other liabilities	(649)	(11,739)
Net cash provided by operating activities	35,517	13,678
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	64,065	71,815
Purchases of securities available for sale	(10,787)	(84,673)
Purchases of premises and equipment	(4,930)	(3,624)
Proceeds from FDIC reimbursement on loss-sharing asset	539	3,692
Proceeds from sales of securities available for sale	6,441	3,023
Proceeds from principal repayments and maturities of securities available for sale	36,530	64,758
Proceeds from Sales of Assets, Investing Activities	337	287
Proceeds from sales of covered other real estate owned	3,103	6,438
Proceeds from sales of other real estate and other personal property owned	8,102	2,019
Payment to FDIC Related to Loss-Sharing Asset	(2,217)	(573)
Net cash provided by (used in) investing activities	(26,947)	(80,468)
Cash Flows From Financing Activities
Net increase (decrease) in deposits	84,941	4,454
Proceeds from Federal Home Loan Bank advances	587,000	100
Proceeds from Federal Reserve Bank borrowings	50	50
Proceeds from exercise of stock options	405	326
Repayment of Federal Home Loan Bank advances	(617,000)	(100)
Repayment of Federal Reserve Bank borrowings	(50)	(50)
Payment of common stock dividends	(6,154)	(3,971)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(12)	0
Purchase and retirement of common stock	522	0
Net cash used by financing activities	48,658	809
Increase (Decrease) in cash and cash equivalents	57,228	(65,981)
Cash and cash equivalents at beginning of period	179,561	513,926
Cash and cash equivalents at end of period	236,789	447,945
Non-cash investing activities
Loans transferred to other real estate owned	5,751	4,114
Cash paid for interest	999	1,319
Cash paid for income tax	$ 10	$ 5,500