CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 23,697	$ 18,923
Adjustments to net income:
Depreciation and amortization expense	2,049	1,348
Provision for loan losses	4,406	2,709
Share-based compensation expense	2,797	1,048
Loss on sale and disposal of premises and equipment	(200)	(18)
Loss on sale of or write down of other real estate owned	(94)	0
Net amortization on securities available-for-sale, net	3,745	7,080
Net accretion of discounts/premiums for loans acquired and deferred loan fees/costs	1,722	(6,713)
Gain on sale of investment securities available-for-sale	(2,093)	(1,285)
Other-than-temporary impairment recovery on investment securities, net	1	0
Originations of loans held for sale	(61,448)	(44,463)
Proceeds from the sales of and principal payments from loans held for sale	65,508	47,487
Gain on sale of loans	(5,698)	(4,030)
Deferred income tax expense (benefit)	912	(977)
Change in accrued expenses and other liabilities, net	4,480	(1,700)
Income from bank owned life insurance, net	(849)	(579)
Amortization of core deposit intangible	2,272	989
Change in accrued interest receivable and other assets, net	2,064	5,904
Net cash provided by operating activities	43,271	25,723
Cash flows from investing activities:
Proceeds from sale of real estate owned	182	468
Increase in loans, net	(254,468)	(204,505)
Principal payments on securities available-for-sale	34,469	18,234
Purchase of securities available-for-sale	(109,944)	(5,135)
Proceeds from sale or maturity of securities available-for-sale	216,804	211,303
Proceeds from the sale of premises and equipment	0	6,987
Purchases of premises and equipment	(274)	(5,745)
Proceeds from bank owned life insurance death benefit	199	0
Change in FHLB, FRB, and other stock, at cost	(9,569)	(4,692)
Cash acquired in acquisitions, net	77,144	40,303
Net cash (used in) provided by investing activities	(45,457)	57,218
Cash flows from financing activities:
Net increase in deposit accounts	131,397	99,286
Change in FHLB advances and other borrowings, net	(59,321)	(75,873)
Proceeds from exercise of stock options and warrants	3,611	528
Repurchase of common stock	(1,077)	0
Net cash provided by financing activities	74,610	23,941
Net increase in cash and cash equivalents	72,424	106,882
Cash and cash equivalents, beginning of period	156,857	78,417
Cash and cash equivalents, end of period	229,281	185,299
Supplemental cash flow disclosures:
Interest paid	8,828	4,182
Income taxes paid	1,858	136
Security (purchases) sales settled in subsequent period	(11,130)	0
Assets acquired (liabilities assumed and capital created) in acquisitions (See Note 4):
Investment securities	442,923	190,254
FHLB and Other Stock	9,739	1,972
Loans	1,364,688	456,158
Core deposit intangible	28,123	4,319
Deferred income tax	11,623	6,748
Goodwill	268,075	51,658
Fixed assets	34,902	4,190
Other assets	45,475	9,362
Deposits	(1,669,550)	(636,591)
Other borrowings	139,034	0
Other liabilities	(8,061)	(8,843)
Common stock and additional paid-in capital	$ 464,982	$ (120,174)