Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 12,073	$ 9,171
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	800	800
Depreciation and amortization of premises and equipment	933	948
Net (accretion) and other amortization	(1,033)	(2,338)
Net amortization on securities	1,302	1,692
Increase in cash surrender value of bank owned life insurance	(546)	(560)
Amortization of intangible assets	246	279
Share based compensation expense	784	610
Increase in accrued interest receivable	(255)	(26)
Small Business Administration ("SBA") loans originated for sale	(4,281)	(5,644)
Proceeds from sale of the guaranteed portion of SBA loans	4,744	6,303
Gain on sale of the guaranteed portion of SBA loans	(371)	(543)
Decrease (increase) in other assets	1,253	(836)
Decrease in accrued expenses and other liabilities	(479)	(336)
Net cash provided by operating activities	15,170	9,520
Cash flows from investing activities:
Purchases of securities available for sale	(525)	(30,421)
Purchases of securities, restricted	(342,405)	(246,765)
Purchases of securities held to maturity		(1,012)
Redemption of securities, restricted	341,559	246,259
Maturities, calls and principal payments of securities available for sale	24,715	29,945
Maturities, calls and principal payments of securities held to maturity	4,558	8,975
Net increase in loans	(98,217)	(55,171)
Purchase of premises and equipment	(1,320)	(809)
Net cash used in investing activities	(71,635)	(48,999)
Cash flows from financing activities:
Net increase in deposits	96,712	56,874
Net decrease in federal funds purchased	(50,000)	(50,000)
Net increase (decrease) in Federal Home Loan Bank advances	18,787	(5,410)
Repayment of junior subordinated debentures		(352)
Net (decrease) increase in repurchase agreements	(5)	33
Net proceeds from issuance of common stock	232	222
Repurchase of surrendered stock from vesting of restricted stock awards	(426)	(221)
Cash dividends paid	(4,570)	(4,541)
Net cash provided by (used in) financing activities	60,730	(3,395)
Net increase (decrease) in cash and cash equivalents	4,265	(42,874)
Cash and cash equivalents at beginning of period	94,747	113,838
Cash and cash equivalents at end of period	99,012	70,964
Cash paid for:
Interest	7,963	6,008
Income taxes	261
Non-cash investing and financing activities:
Securities which settled in the subsequent period		3,080
Conversion of junior subordinated debentures		$ 15,350
Transfers from portfolio loans to other real estate owned	$ 175