CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 20,901	$ 8,776
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and accretion of discounts on investment securities, net	1,136	941
Depreciation and amortization	1,616	428
Provision for loan losses	3,375	909
Stock-based compensation	726	34
Gains on sales of investment securities, net	(726)	(1,989)
Net loss on sale of other real estate owned	112
Loans originated for resale	(13,602)	(2,821)
Proceeds from sale of loans held for sale	13,691	2,417
Gains on sale of loans held for sale	(213)	(79)
(Increase) decrease in accrued interest receivable	(355)	388
Increase in cash surrender value of bank-owned life insurance	(774)	(511)
(Increase) decrease in other assets	(2,010)	2,545
Decrease in other liabilities	(1,600)	(645)
Net cash provided by operating activities	22,277	10,393
Investment securities available-for-sale:
Purchases	(10,909)	(10,487)
Sales	12,271	66,738
Maturities, calls and principal repayments	22,074	14,486
Investment securities held-to-maturity:
Purchases	(14,497)	(8,310)
Maturities and principal repayments	6,308	5,068
Net purchases of restricted investment in bank stocks	(3,543)	(2,303)
Net increase in loans	(227,396)	(45,730)
Purchases of premises and equipment	(1,733)	(747)
Proceeds from sale of other real estate owned	126
Net cash (used in) provided by investing activities	(217,299)	18,715
Cash flows from financing activities:
Net increase (decrease) in deposits	93,624	(67,385)
Increase in subordinated debt	50,000
Advances in FHLB borrowings	500,000	50,000
Repayments of FHLB borrowings	(430,795)
Net decrease in repurchase agreements	(16,000)
Cash dividends on preferred stock	(56)	(56)
Cash dividends paid on common stock	(4,494)	(2,456)
Issuance cost of common stock		(7)
Tax benefit from options exercised		241
Proceeds from exercise of stock options	1,379	480
Net cash provided (used in) by financing activities	193,658	(19,183)
Net change in cash and cash equivalents	(1,364)	9,925
Cash and cash equivalents at beginning of period	126,847	82,692
Cash and cash equivalents at end of period	125,483	992,617
Cash payments for:
Interest paid on deposits and borrowings	10,149	5,425
Income taxes	12,545	2,553
Supplemental disclosures of non-cash investing activities:
Transfer of loans to other real estate owned	694
Dividends declared, not paid	$ 23	$ 1,063