Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 29,296	$ 26,166
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	4,031	3,319
Provision for loan losses	2,340	(2,450)
Stock-based compensation	2,577	2,492
Deferred income taxes	(1,080)	3,599
Bank-owned life insurance	(1,015)	(1,000)
Net gain on securities, other assets and other real estate owned	(307)	(88)
Other operating activities, net	(1,507)	122
Changes in operating assets and liabilities:
Other assets	3,054	81
Other liabilities	4,416	2,872
Net cash provided by operating activities	41,805	35,113
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of other investments	(19,271)	(11,489)
Proceeds from other investments	20,044	17,487
Purchase of investment securities available for sale	(80,434)	(1,970)
Purchase of investment securities held to maturity	(51,495)	(12,651)
Maturity, call and principal payments on investment securities available for sale		16,251
Maturity, call and principal payments on investment securities held to maturity	90,361	48,253
Purchase of bank-owned life insurance		(3,195)
Net proceeds from sale of loans, OREO and repossessed assets		60
Loan originations and repayments, net	(185,511)	(128,944)
Purchase of premises and equipment	(2,300)	(5,355)
Other investing activities, net	638	272
Net cash used in investing activities	(227,968)	(81,281)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand, money market and savings accounts	164,249	194,419
Net increase (decrease) in certificates of deposits	(16,500)	1,062
Net decrease in short-term borrowings	(4,754)	(129,801)
Net increase in securities sold under agreements to repurchase	32,696	4,655
Proceeds from issuance of common stock	1,315	1,342
Taxes paid in net settlement of restricted stock	(1,126)	(890)
Dividends paid on common stock	(6,462)	(5,783)
Net cash provided by financing activities	169,418	65,004
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(16,745)	18,836
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	96,050	67,312
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 79,305	$ 86,148