Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2015	10,549,423
Balance at Dec. 31, 2015	$ 105	$ 26,286	$ 9,013	$ 725	$ (204)	$ 35,925
Net earnings			2,658			2,658
Other comprehensive loss				(86)		(86)
Amortization of deferred compensation related to stock-based awards		269				269
Issuance of unvested shares of restricted stock (in shares)	86,400
Issuance of unvested shares of restricted stock	$ 1	(1)				$ 369
Repurchase and retirement of common stock (in shares)	(241,805)					(241,805)
Repurchase and retirement of common stock	$ (2)	(976)				$ (978)
Balance (in shares) at Dec. 31, 2016	10,394,018					10,394,018
Balance at Dec. 31, 2016	$ 104	25,578	11,671	639	(204)	$ 37,788
Net earnings			975			975
Other comprehensive loss				243		243
Amortization of deferred compensation related to stock-based awards		344				344
Issuance of unvested shares of restricted stock (in shares)	66,000
Issuance of unvested shares of restricted stock						$ 432
Repurchase and retirement of common stock (in shares)	(13,883)					(13,883)
Repurchase and retirement of common stock		(62)				$ (62)
Forfeiture of unvested shares of restricted stock (in shares)	(18,700)
Balance (in shares) at Dec. 31, 2017	10,427,435					10,427,435
Balance at Dec. 31, 2017	$ 104	$ 25,860	$ 12,646	$ 882	$ (204)	$ 39,288