CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Cash Flows [Abstract]
Net income	$ 28,152	$ 17,450
Adjustments to net income:
Depreciation and amortization expense	2,107	1,718
Provision for loan losses	6,722	4,725
Share-based compensation expense	1,831	670
Loss (gain) on sale and disposal of premises and equipment	420	(15)
(Gain) loss on sale of or write down of other real estate owned	(18)	92
Net amortization on securities held for sale, net	8,060	2,804
Net accretion of discounts/premiums for loans acquired and deferred loan fees/costs	(8,832)	(1,964)
Gain on sale of investment securities available for sale	(1,797)	(293)
Originations of loans held for sale	(76,570)	0
Proceeds from the sales of and principal payments from loans held for sale	83,317	0
Gain on sale of loans	(7,152)	(5,265)
Deferred income tax benefit	(1,756)	1,006
Change in accrued expenses and other liabilities, net	1,388	209
Income from bank owned life insurance, net	(871)	(855)
Amortization of core deposit intangible	1,513	1,003
Change in accrued interest receivable and other assets, net	3,272	(6,905)
Net cash provided by operating activities	39,786	14,380
Cash flows from investing activities:
Increase in loans, net	(370,196)	(199,527)
Change in other real estate owned from sales and write-downs	468	0
Principal payments on securities available for sale	27,434	25,517
Purchase of securities available for sale	(102,010)	(90,032)
Proceeds from sale or maturity of securities available for sale	229,855	26,520
Proceeds from the sale of premises and equipment	10,263	1,623
Purchases of premises and equipment	(10,499)	(1,097)
Change in FHLB, FRB, and other stock, at cost	(7,674)	(3,054)
Cash acquired in acquisitions	40,304	2,961
Net cash used in investing activities	(182,055)	(237,089)
Cash flows from financing activities:
Net increase in deposit accounts	228,037	172,363
Change in FHLB advances and other borrowings, net	(60,869)	41,540
Proceeds from exercise of stock options and warrants	588	69
Warrants exercised	0	689
Repurchase of common stock	0	(116)
Net cash provided by financing activities	167,756	214,545
Net increase (decrease) in cash and cash equivalents	25,487	(8,164)
Cash and cash equivalents, beginning of period	78,417	110,925
Cash and cash equivalents, end of period	103,904	102,761
Supplemental cash flow disclosures:
Interest paid	10,956	9,877
Income taxes paid	13,139	11,962
Assets acquired (liabilities assumed and capital created) in acquisitions (See Note 4):
Investment securities	190,254	53,752
FHLB and Other Stock	3,671	2,369
Loans	456,158	332,893
Core deposit intangible	4,319	2,903
Deferred income tax	7,069	4,794
Bank owned life insurance	0	11,276
Goodwill	51,106	27,882
Fixed assets	4,502	2,134
Other assets	5,610	2,402
Deposits	(636,591)	(336,018)
Other borrowings	0	(33,300)
Other liabilities	(8,843)	(1,796)
Common stock and additional paid-in capital	$ (119,383)	$ (72,252)