Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 5,412	$ 25,241
Investing activities:
Purchases of investment securities available-for-sale	(217,847)	(34,902)
Purchases of investment securities held to maturity	(5,116)	0
Proceeds from maturities, calls, sales and prepayments of investment securities available-for-sale	67,992	42,316
Proceeds from maturities and calls of investment securities held-to-maturity	2,170	4,572
Proceeds from redemption of FHLB stock	(130)	22,620
Loan originations, net of collections	(213,818)	(131,832)
Purchases of premises and equipment	(1,244)	144
Proceeds from sales of premises and equipment	76	26
Proceeds from sales of other assets	0	1,855
Proceeds from sales of OREO	360	865
Net cash assumed in Bank of America branch acquisition	456,611	0
Net cash provided by (used in) investing activities	89,054	(94,336)
Financing activities:
Net increase in deposits	6,977	66,365
Tax effect of non-vested restricted stock	(434)	(575)
FHLB advance borrowings	257,000	95,000
Repayment of FHLB advances	(257,000)	(95,000)
Net cash provided by financing activities	6,543	65,790
Net increase (decrease) in cash and cash equivalents	101,009	(3,305)
Cash and cash equivalents at beginning of period	77,805	83,089
Cash and cash equivalents at end of period	178,814	79,784
Supplemental disclosures of cash flow information:
Interest paid	12,608	2,282
Taxes paid	298	0
Loans transferred to OREO	$ 0	$ 1,558