Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 8,258	$ 251
Adjustments to reconcile net income to net cash used in operating activities:
Provision for loan losses	1,795	10,619
Depreciation and amortization	3,341	3,819
Current income tax receivable	444	2,747
Deferred income tax asset	(1,734)	2,641
Net excess tax (benefit) deficit on stock-based compensation	(2,845)
Discount accretion, net of premium amortization on securities	6,191	10,766
Loan accretion	703	1,448
Gain on sale of mortgage loans, net	(454)	(474)
Origination of loans held for sale, net of repayments	(14,925)	(18,790)
Proceeds from sales of loans held for sale	32,194	23,981
Bank-owned life insurance income	(470)	(395)
Gain on the sale of other real estate owned, net	(112)	(432)
Impairment on other real estate owned	46	69
Gain on sale of fixed assets	(3)
Stock-based compensation	902	929
(Increase) decrease in other assets	(3,280)	(5,631)
(Decrease) increase in other liabilities	3,576	(2,964)
Net cash used in (provided by) operating activities	21,245	7,052
Cash flows from investing activities:
Purchase of FHLB stock		(500)
Proceeds from redemption of FHLB stock	1,884	5,761
Proceeds from maturities of investment securities held-to-maturity	18,350	21,940
Proceeds from maturities of investment securities available-for-sale	59,155	63,314
Purchase of investment securities available-for-sale	(96,948)	(660)
Net increase in loans	(87,543)	(169)
Sales (purchases) of premises and equipment, net	(783)	(1,905)
Proceeds from sales of loans	20,269	6,675
Proceeds from sales of other real estate owned	755	632
Net cash provided by (used in) investing activities	(84,861)	95,088
Cash flows from financing activities:
Net increase (decrease) in deposits	99,294	(996)
Increase (decrease) in repurchase agreements	(314)	(50,171)
Advances from FHLB	92,798
FHLB payoffs	(54,683)
Issuance of stock under purchase and equity compensation plans	(5,737)	12
Payment of dividends	(2,048)	(1,512)
Repurchase of shares		(21,941)
Net cash provided by (used in) financing activities	129,310	(74,608)
(Decrease) increase in cash and cash equivalents	65,694	27,532
Cash and cash equivalents at beginning of the year	152,736	166,092
Cash and cash equivalents at end of year	218,430	193,624
Supplemental disclosure of cash flow information during the period:
Cash paid for interest	2,745	2,639
Net tax refunds (payments)	7	(8)
Supplemental schedule of non-cash investing activities:
Loans transferred to other real estate owned at fair value	578	474
Loans purchased but not settled	16,141	$ 667
Transfer of Loans Held-for-sale to Portfolio Loans	$ 3,825