Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net Income	$ 16,500	$ 16,404	$ 15,419
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan losses	6,919	2,120	150
Amortization of intangibles	2,720	0	0
Accretion of unfavorable lease liability	(303)	0	0
Purchase accounting discount amortization	115	0	0
Provision for off balance sheet losses	50	0	109
Accretion of credit mark	(4,296)	0	0
Income from bank-owned life insurance	(1,201)	(558)	(460)
(Gain) loss on sale of securities	1	(109)	89
(Gain) loss on sale of other real estate owned	(109)	35	0
Deferred tax (benefit) expense	8,997	(698)	(534)
Stock-based compensation	442	335	332
Valuation (allowance) release on derivatives	402	(394)	(383)
Net amortization on securities	2,860	2,051	1,077
Depreciation and amortization fixed assets	1,462	515	507
Changes in assets and liabilities:
Decrease (increase) in valuation of loans held for sale carried at fair value	(98)	669	240
Originations of loans held for sale	(432,678)	(537,076)	(484,747)
Proceeds from sales of loans held for sale	436,453	544,866	485,398
Increase in other assets	(9,223)	(2,113)	(1,470)
Increase in other liabilities	3,258	230	382
Net cash provided by operating activities	32,271	26,277	16,109
Cash Flows from Investing Activities
Proceeds from maturities, calls and prepayments of securities available-for-sale	35,555	15,883	18,180
Proceeds from sale of available-for-sale securities	183,065	13,200	31,151
Purchases of securities available-for-sale	(201,365)	(65,734)	(86,264)
Proceeds from maturities, calls and prepayments of securities held-to-maturity	68	5,000	0
Purchases of Federal Reserve and Federal Home Loan Bank Stock	(32,579)	(9,761)	(13,843)
Proceeds from redemption of Federal Reserve and Federal Home Loan Bank Stock	30,218	6,928	15,545
Purchase of bank owned life insurance	0	(10,000)	0
Net increase in loans	(116,614)	(161,895)	(110,861)
Proceeds from the settlement of other real estate owned	4,222	463	0
Purchases of premises and equipment	(703)	(871)	(232)
Cash acquired in business combination	90,940	0	0
Net cash used in investing activities	(7,193)	(206,787)	(146,324)
Cash Flows from Financing Activities
Net increase in demand, interest-bearing demand and savings deposits	211,873	201,113	114,860
Net (decrease) increase in time deposits	(88,678)	(60,530)	43,441
Net increase (decrease) in securities sold under agreement to repurchase	(31,990)	35,880	(4,506)
Net increase (decrease) in other short-term borrowings	(34,059)	59,000	(90,000)
Net (decrease) increase in long-term borrowings	(49,941)	5,000	55,000
Proceeds from issuance of common stock	8,326	1,567	1,146
Dividends paid	(9,355)	(6,350)	(9,866)
Net cash provided by financing activities	6,176	235,680	110,075
Increase (decrease) in cash and cash equivalents	31,254	55,170	(20,140)
Cash and Cash Equivalents
Beginning	91,059	35,889	56,029
Ending	122,313	91,059	35,889
Supplemental Disclosures of Cash Flow Information
Cash payments for interest	10,957	6,324	4,094
Cash payments for income taxes	8,174	10,020	8,769
Supplemental Disclosures of Noncash Investing Activities
Unrealized (loss) gain on securities available for sale	(415)	(868)	(709)
Transfers of loans held for investment to other real estate owned	0	129	0
Other real estate owned transferred to other assets due to FHA guarantee	0	(129)	0
Purchased land transferred to other assets held for sale	$ (643)	$ 0	$ 0