Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Total
Balance at Dec. 31, 2016	$ 79,114	$ 977	$ 14,557	$ (2,350)	$ 92,298
Balance (in shares) at Dec. 31, 2016	11,148,446
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			8,748		8,748
Other comprehensive income (loss), net of tax				(1,448)	(1,448)
Stock dividend adjustment	$ 207		(207)		0
Stock dividend adjustment (in shares)	289
Tax Rate Change Reclassification			599	(599)	0
Stock dividend declared	$ 5,806		(5,806)		0
Stock dividend declared (in shares)	447,312
Cash in lieu of fractional shares			(10)		(10)
Cash in lieu of fractional shares (in shares)	(129)
Stock-based compensation	$ 378				378
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals	$ 78				78
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals (in shares)	34,211
Balance at Dec. 31, 2017	$ 85,583	977	17,881	(4,397)	100,044
Balance (in shares) at Dec. 31, 2017	11,630,129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			12,551		12,551
Other comprehensive income (loss), net of tax				(639)	(639)
Stock dividend adjustment	$ 240		(240)		0
Stock dividend adjustment (in shares)	628
Stock dividend declared	$ 6,280		(6,280)		0
Stock dividend declared (in shares)	583,514
Cash in lieu of fractional shares			(10)		(10)
Cash in lieu of fractional shares (in shares)	(159)
Stock-based compensation	$ 424				424
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals	$ 91				91
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals (in shares)	33,722
Stock options exercised, net	$ 0				0
Stock options exercised, net (in shares)	5,978
Balance at Dec. 31, 2018	$ 92,618	977	23,902	(5,036)	112,461
Balance (in shares) at Dec. 31, 2018	12,253,812
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			14,721		14,721
Other comprehensive income (loss), net of tax				5,170	5,170
Stock dividend adjustment	$ 330		(330)		0
Stock dividend adjustment (in shares)	1,401
Stock dividend declared	$ 6,668		(6,668)		0
Stock dividend declared (in shares)	615,196
Cash in lieu of fractional shares			(8)		(8)
Cash in lieu of fractional shares (in shares)	(116)
Stock-based compensation	$ 475				475
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals	$ 96				96
Common shares issued related to restricted stock grants and ESPP, net of restricted stock reversals (in shares)	48,839
Balance at Dec. 31, 2019	$ 100,187	$ 977	$ 31,617	$ 134	$ 132,915
Balance (in shares) at Dec. 31, 2019	12,919,132