CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 12,029	$ 11,908
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,991	1,754
Depreciation on premises and equipment	2,339	2,542
Amortization of intangible assets	1,104	1,099
FDIC loss-sharing expense		1,661
Amortization of restricted stock awards	393	251
Compensation expense for stock option grants	273	212
Increase in cash surrender value of life insurance	(1,227)	(936)
Investment securities amortization, net	671	531
Other-than-temporary impairment on investment securities		824
Gain on sales of investment securities, net	(122)	(276)
Gain on sales of other real estate owned	(32)	(79)
Write-down of other real estate owned	171	215
Origination of loans held for sale	(434,547)	(492,995)
Proceeds from sales of loans held for sale	472,979	456,368
Gain on loans sold and held for sale	(15,679)	(20,294)
Amortization of mortgage servicing rights	2,747	2,733
Impairment (recapture) of mortgage servicing rights	1,726	5,020
Net change in operating assets and liabilities:
Accrued interest receivable	256	(663)
Accrued interest payable	235	74
Accrued income taxes receivable	3,153	5,208
Other assets	8,616	1,434
Other liabilities	(5,526)	(1,954)
Net cash provided by operating activities	51,550	(25,363)
Investment securities available for sale:
Purchases	(134,037)	(44,029)
Sales	8,623	30,326
Maturities and payments	137,464	16,409
Investment securities held to maturity:
Purchases	(2,707)	(2,190)
Maturities	5,835	4,723
Net increase in loans	(179,387)	(170,595)
Purchases of premises and equipment	(2,667)	(1,556)
Purchase of bank-owned life insurance		(20,000)
Purchases of nonmarketable equity securities	(5,056)	(2,003)
Sales of nonmarketable equity securities	3,818	90
Proceeds from sales of other real estate owned	3,340	3,628
Net cash paid in acquisitions	(18,519)
Net cash (used in) provided by investing activities	(183,293)	(185,197)
Cash flows from financing activities:
Net increase (decrease) in deposits	186,821	(13,096)
Net increase in short-term borrowings	24,638	17,476
Proceeds from FHLB borrowings	177,357	495,000
Payments made on FHLB borrowings	(149,857)	(437,500)
Proceeds from other borrowings, net of issuance costs	39,964
Payments made on other borrowings	(341)
Payments made on subordinated debt		(8,000)
Cash dividends paid on common stock	(6,322)	(4,272)
Cash dividends paid on preferred stock	(19)
Proceeds from issuance of common stock in initial public offering, net of issuance costs		71,698
Proceeds from issuance of common stock under employee benefit plans	3,142	145
Net cash provided by financing activities	275,383	121,451
Net (decrease) increase in cash and cash equivalents	143,640	(89,109)
Cash and cash equivalents:
Beginning of period	190,716	212,475
End of period	334,356	123,366
Cash payments for:
Interest paid on deposits and borrowed funds	8,996	7,979
Income tax paid	630	157
Supplemental disclosures of noncash investing and financing activities:
Transfer of loans to other real estate owned	2,004	2,153
Transfer of premises and equipment to assets held for sale	$ 1,748
UNUSED ELEMENTS
Stock Issued During Period, Value, New Issues		$ 71,698