Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net income	$ 21,216	$ 15,240
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,800	1,075
Depreciation, amortization and accretion	739	3,772
Deferred income tax expense	2,832	6,408
Funding of mortgage loans held for sale	(458,500)	(185,595)
Proceeds from sales of mortgage loans held for sale	391,552	113,076
Gains on sales of mortgage loans held for sale	(5,847)	(4,633)
Loss on sales of securities	71	0
Losses on sales of premises and equipment	5	4
Stock-based compensation	859	864
Decrease in FDIC loss-share indemnification asset, net of accretion	1,067	2,213
Decrease (increase) in other assets	11,827	(483)
Decrease in other liabilities	(8,298)	(14,432)
Net cash used in operating activities	(40,677)	(62,491)
Investing activities
Purchases of securities available for sale	(32,396)	(13,651)
Proceeds from sales of securities available for sale	4	0
Proceeds from call/maturities of securities available for sale	29,803	24,814
Purchases of securities held to maturity	(5,785)	(54,824)
Proceeds from call/maturities of securities held to maturity	15,193	13,922
Net (increase) decrease in loans	(157,198)	30,542
Purchases of premises and equipment	(2,656)	(5,924)
Proceeds from sales of other assets	3,611	8,147
Net cash (used in) provided by investing activities	(149,424)	3,026
Financing activities
Net increase in noninterest-bearing deposits	106,166	39,479
Net increase in interest-bearing deposits	106,105	64,872
Net decrease in short-term borrowings	(8,024)	(25,671)
Repayment of long-term debt	(938)	(978)
Cash paid for dividends	(6,892)	(5,398)
Cash received on exercise of stock-based compensation	382	28
Excess tax benefit (expense) from stock-based compensation	214	(71)
Net cash provided by financing activities	197,013	72,261
Net increase in cash and cash equivalents	6,912	12,796
Cash and cash equivalents at beginning of period	211,571	161,583
Cash and cash equivalents at end of period	218,483	174,379
Supplemental disclosures
Cash paid for interest	6,297	5,663
Cash paid for income taxes	5,460	1,368
Noncash transactions:
Transfers of loans to other real estate owned	1,954	5,559
Financed sales of other real estate owned	92	480
Transfers of loans held for sale to loan portfolio	$ 6,610	$ 0