Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Payments for (Proceeds from) Other Investing Activities	$ 0	$ 1,026
Payments to Acquire Businesses, Net of Cash Acquired	0	(154,170)
Payments to Acquire Intangible Assets	0	913
Cash Flows From Operating Activities
Net Income	41,071	26,767
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses and losses on covered loans	4,039	268
Stock-based compensation expense	1,224	1,280
Depreciation, amortization and accretion	17,057	22,527
Net realized gain on sale of securities	519	462
Net realized gain on sale of other assets	453	(73)
Net realized (gain) loss on sale of other real estate owned	(2,972)	(6,291)
Write-down on other real estate owned	2,554	664
Net change in:
Loans held for sale	(15)	413
Interest receivable	23	(8,850)
Interest payable	(20)	(12)
Other assets	3,062	6,285
Other liabilities	(2,589)	(12,662)
Net cash provided by operating activities	63,368	29,854
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	201,162	194,322
Purchases of securities available for sale	(22,804)	(162,018)
Purchases of premises and equipment	(8,383)	(8,071)
Proceeds from FDIC reimbursement on loss-sharing asset	3,982	6,387
Proceeds from sales of securities available for sale	30,704	166,881
Proceeds from principal repayments and maturities of securities available for sale	83,788	167,736
Proceeds from Sales of Assets, Investing Activities	1,095	806
Proceeds from sales of covered other real estate owned	5,634	13,814
Proceeds from sales of other real estate and other personal property owned	10,298	6,076
Payment to FDIC Related to Loss-Sharing Asset	(2,217)	0
Net cash provided by (used in) investing activities	(99,065)	(158,820)
Cash Flows From Financing Activities
Net increase (decrease) in deposits	25,594	(177,631)
Proceeds from Federal Home Loan Bank advances	1,168,000	756,100
Proceeds from Federal Reserve Bank borrowings	50	50
Proceeds from exercise of stock options	425	774
Repayment of Federal Home Loan Bank advances	(1,094,000)	(711,000)
Repayment of Federal Reserve Bank borrowings	(50)	(50)
Payment of common stock dividends	(18,783)	(9,093)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(37)	(10)
Repayments of Subordinated Debt	0	51,000
Purchase and retirement of common stock	601	391
Net cash used by financing activities	80,598	(192,251)
Increase (Decrease) in cash and cash equivalents	44,901	(321,217)
Cash and cash equivalents at beginning of period	179,561	513,926
Cash and cash equivalents at end of period	224,462	192,709
Supplemental Information:
Cash paid for interest	1,968	2,155
Cash paid for income tax	8,200	9,589
Non-cash investing and financing activities
Loans transferred to other real estate owned	7,841	9,307
Stock Issued	$ 0	$ 276,181