Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 34,899	$ 26,069	$ 29,007
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	4,446	4,112	3,309
Provision for loan losses	(2,101)	6,420	(4,155)
Stock-based compensation	3,213	3,324	3,141
Deferred income taxes	3,985	(1,572)	5,519
Bank-owned life insurance	(1,367)	(1,334)	(1,271)
Net loss on securities, other assets and other real estate owned	(121)	(369)	(2,618)
Net gain on securities, other assets and other real estate owned	(121)	(369)	(2,597)
Other operating activities, net	(869)	(1,761)	(893)
Changes in operating assets and liabilities:
Other assets	(2,959)	(529)	(1,393)
Other liabilities	4,416	(237)	(3,375)
Net cash provided by (used in) operating activities	43,542	34,123	27,271
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of other investments	(15,720)	(13,765)	(20,859)
Proceeds from other investments	19,152	14,428	19,456
Purchase of investment securities available for sale	(6,962)	(28,049)	(13,053)
Purchase of investment securities held to maturity	(89,016)	(108,052)
Proceeds from sale of investment securities available for sale			11,590
Maturity, call and principal payments on investment securities available for sale	27,322	36,919	83,515
Maturity, call and principal payment on investment securities held to maturity	66,830	68,960	34
Acquisition of client relationships		(75)	(250)
Purchase of bank-owned life insurance	(3,195)		(3,335)
Net proceeds from sale of loans, OREO and repossessed assets	60	2,499	12,392
Loan originations, purchases and repayments, net	(240,092)	(291,573)	(326,658)
Purchase of premises and equipment	(9,381)	(1,547)	(4,226)
Other investing activities, net	348		(1,976)
Net cash provided by (used in) investing activities	(250,654)	(320,255)	(243,370)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand, money market and savings accounts	289,228	307,430	247,564
Net decrease in certificates of deposits	(1,157)	(58,009)	(34,310)
Net increase (decrease) in short-term borrowings	(25,770)	19,531	112,469
Net decrease in securities sold under agreements to repurchase	(19,820)	(2,517)	(88,518)
Net proceeds from issuance of subordinated notes payable		59,250
Proceeds from issuance of common stock	2,118	1,733	1,570
Taxes paid in net settlement of restricted stock	(891)	(1,207)	(1,045)
Redemption of preferred stock		(57,366)
Dividends paid on common stock	(7,858)	(6,953)	(6,076)
Dividends paid on preferred stock		(463)	(574)
Other financing activities, net		450	556
Net cash used in financing activities	235,850	261,879	231,636
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	28,738	(24,253)	15,537
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	67,312	91,565	76,028
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 96,050	$ 67,312	$ 91,565