CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]	Total
Balance at Dec. 31, 2017	$ 85,583	$ 977	$ 17,881	$ (4,397)	$ 100,044
Balance (in shares) at Dec. 31, 2017	11,630,129
Net income			2,733		2,733
Other comprehensive income (loss), net of taxes				(1,811)	(1,811)
Stock dividend adjustment	$ 240		(240)		0
Stock dividend adjustment (in shares)	628
Cash in lieu of fractional shares			(10)		(10)
Cash in lieu of fractional shares (in shares)	(159)
Stock-based compensation	$ 108				108
Common shares issued related to restricted stock grants	$ 0				0
Common shares issued related to restricted stock grants (in shares)	25,281
Stock options exercised	$ 0				0
Stock options exercised (in shares)	5,978
Balance at Mar. 31, 2018	$ 85,931	977	20,364	(6,208)	101,064
Balance (in shares) at Mar. 31, 2018	11,661,857
Balance at Dec. 31, 2017	$ 85,583	977	17,881	(4,397)	100,044
Balance (in shares) at Dec. 31, 2017	11,630,129
Net income					9,203
Other comprehensive income (loss), net of taxes					(2,990)
Balance at Sep. 30, 2018	$ 86,165	977	26,834	(7,387)	106,589
Balance (in shares) at Sep. 30, 2018	11,661,857
Balance at Mar. 31, 2018	$ 85,931	977	20,364	(6,208)	101,064
Balance (in shares) at Mar. 31, 2018	11,661,857
Net income			3,003		3,003
Other comprehensive income (loss), net of taxes				(610)	(610)
Stock-based compensation	$ 117				117
Balance at Jun. 30, 2018	$ 86,048	977	23,367	(6,818)	103,574
Balance (in shares) at Jun. 30, 2018	11,661,857
Net income			3,467		3,467
Other comprehensive income (loss), net of taxes				(569)	(569)
Stock-based compensation	$ 117				117
Balance at Sep. 30, 2018	$ 86,165	977	26,834	(7,387)	106,589
Balance (in shares) at Sep. 30, 2018	11,661,857
Balance at Dec. 31, 2018	$ 92,618	977	23,902	(5,036)	112,461
Balance (in shares) at Dec. 31, 2018	12,253,812
Net income			3,985		3,985
Other comprehensive income (loss), net of taxes				1,478	1,478
Stock dividend adjustment	$ 330		(330)		0
Stock dividend adjustment (in shares)	1,401
Cash in lieu of fractional shares			(8)		(8)
Cash in lieu of fractional shares (in shares)	(116)
Stock-based compensation	$ 111				111
Common shares issued related to restricted stock grants	$ 0				0
Common shares issued related to restricted stock grants (in shares)	40,258
Balance at Mar. 31, 2019	$ 93,059	977	27,549	(3,558)	118,027
Balance (in shares) at Mar. 31, 2019	12,295,355
Balance at Dec. 31, 2018	$ 92,618	977	23,902	(5,036)	112,461
Balance (in shares) at Dec. 31, 2018	12,253,812
Net income					11,145
Other comprehensive income (loss), net of taxes					5,564
Balance at Sep. 30, 2019	$ 93,308	977	34,709	528	129,522
Balance (in shares) at Sep. 30, 2019	12,295,386
Balance at Mar. 31, 2019	$ 93,059	977	27,549	(3,558)	118,027
Balance (in shares) at Mar. 31, 2019	12,295,355
Net income			3,406		3,406
Other comprehensive income (loss), net of taxes				3,324	3,324
Stock-based compensation	$ 125				125
Restricted stock reversal					0
Restricted stock reversal (in shares)	(1,969)
Balance at Jun. 30, 2019	$ 93,184	977	30,955	(234)	124,882
Balance (in shares) at Jun. 30, 2019	12,293,386
Net income			3,754		3,754
Other comprehensive income (loss), net of taxes				762	762
Stock-based compensation	$ 124				124
Common shares issued related to restricted stock grants					0
Common shares issued related to restricted stock grants (in shares)	2,000
Balance at Sep. 30, 2019	$ 93,308	$ 977	$ 34,709	$ 528	$ 129,522
Balance (in shares) at Sep. 30, 2019	12,295,386