Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net income	$ 18,864	$ 12,315	$ 13,241
Items not requiring cash
Provision for loan losses	2,120	1,220	850
Depreciation and amortization	5,634	4,278	4,586
Deferred income tax	3,465	3,562	1,537
Increase in cash value of life insurance	(1,239)	(1,113)	(1,159)
Net amortization (accretion) of purchase accounting adjustments	(439)	264	420
Loans originated for sale	(122,172)	(116,887)	(150,620)
Proceeds from sales of loans held for sale	125,450	119,711	156,827
Net gain on sale of loans	(3,126)	(3,887)	(4,761)
Net gain on sale of securities, available for sale	(804)	(708)	(1,023)
Gain on bank owned life insurance	(327)		(346)
Loss on sale of other real estate and repossessed assets	43	122	210
Change in
Interest receivable and other assets	(1,798)	619	(1,349)
Interest payable and other liabilities	1,293	287	(5)
Other adjustments	164	259	143
Net cash provided by operating activities	27,128	20,042	18,551
Investing Activities
Net change in interest-bearing time deposits	6,361	(860)	(993)
Purchases of securities
Purchases of securities, available for sale	(108,809)	(86,499)	(88,161)
Proceeds from maturities and paydowns of securities
Available for sale	31,920	26,622	37,872
Proceeds from sales of securities, available for sale	67,002	34,592	57,037
Purchase of Federal Home Loan Bank stock	(214)	(258)	(443)
Net change in loans	(66,903)	(32,901)	(92,946)
Net cash and cash equivalents paid in acquisition	(7,673)
Proceeds from sales of portfolio loans		18,543
Purchases of premises and equipment	(1,466)	(1,809)	(2,079)
Proceeds from real estate owned sales	1,598	980	2,497
Proceeds from sale of real estate held for investment	175	511
Proceeds from bank owned life insurance	1,669		1,120
Proceeds from sale of premises and equipment	67		9,490
Net cash used in investing activities	(76,273)	(41,079)	(76,606)
Net change in
Noninterest-bearing, interest-bearing demand and savings deposits	(33,214)	50,235	39,883
Certificates of deposit	35,176	(1,583)	22,117
Proceeds from FHLB advances	545,500	414,700	316,300
Repayments of FHLB advances	(495,808)	(438,128)	(301,326)
Proceeds from other borrowings	10,000
Repayments of other borrowings	(335)		(5,312)
Cash dividends	(6,354)	(4,862)	(4,284)
Stock options exercised	253	1,156	976
Stock repurchased			(4,354)
Net cash provided by financing activities	55,218	21,518	64,000
Net Change in Cash and Cash Equivalents	6,073	481	5,945
Cash and Cash Equivalents, Beginning of Period	27,341	26,860	20,915
Cash and Cash Equivalents, End of Period	33,414	27,341	26,860
Additional Cash Flows Information
Interest paid	15,972	10,505	9,096
Income tax paid	350	2,500	2,650
Transfers from loans to foreclosed assets	1,879	624	1,450
Mortgage servicing rights capitalized	438	$ 549	482
Transfers from fixed assets to other assets			$ 763
Fair value of assets acquired	406,558
Cash paid in acquisition	(18,999)
Common stock issued	(42,323)
Liabilities assumed	$ 345,236