Consolidated Statements of Stockholders' Equity (Unaudited) - 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, 2017	10,427,435
Balance at Dec. 31, 2017	$ 104	$ 25,860	$ 12,646	$ 882	$ (204)	$ 39,288
Net earnings (loss)			381			381
Other comprehensive income (loss)				38		38
Amortization of deferred compensation related to stock-based awards		121				121
Issuance of unvested shares of restricted stock (in shares)	79,200
Issuance of unvested shares of restricted stock	$ 1	(1)
Balance (in shares) at Mar. 31, 2018	10,506,635
Balance at Mar. 31, 2018	$ 105	25,980	13,027	920	(204)	39,828
Balance (in shares) at Dec. 31, 2017	10,427,435
Balance at Dec. 31, 2017	$ 104	25,860	12,646	882	(204)	39,288
Net earnings (loss)						3,829
Balance (in shares) at Sep. 30, 2018	10,523,035
Balance at Sep. 30, 2018	$ 105	26,331	16,475	796	(204)	43,503
Balance (in shares) at Mar. 31, 2018	10,506,635
Balance at Mar. 31, 2018	$ 105	25,980	13,027	920	(204)	39,828
Net earnings (loss)			4,014			4,014
Other comprehensive income (loss)				(120)		(120)
Amortization of deferred compensation related to stock-based awards		171				171
Issuance of unvested shares of restricted stock (in shares)	11,900
Issuance of unvested shares of restricted stock
Balance (in shares) at Jun. 30, 2018	10,518,535
Balance at Jun. 30, 2018	$ 105	26,151	17,041	800	(204)	43,893
Net earnings (loss)			(566)			(566)
Other comprehensive income (loss)				(4)		(4)
Amortization of deferred compensation related to stock-based awards		180				180
Issuance of unvested shares of restricted stock (in shares)	4,500
Issuance of unvested shares of restricted stock
Balance (in shares) at Sep. 30, 2018	10,523,035
Balance at Sep. 30, 2018	$ 105	26,331	16,475	796	(204)	$ 43,503
Balance (in shares) at Dec. 31, 2018	10,523,035					10,523,035
Balance at Dec. 31, 2018	$ 105	26,513	15,683	783	(204)	$ 42,880
Net earnings (loss)			1,138			1,138
Other comprehensive income (loss)				(83)		(83)
Amortization of deferred compensation related to stock-based awards		183				183
Issuance of unvested shares of restricted stock (in shares)	80,300
Issuance of unvested shares of restricted stock	$ 1	(1)
Balance (in shares) at Mar. 31, 2019	10,603,335
Balance at Mar. 31, 2019	$ 106	26,695	16,821	700	(204)	$ 44,118
Balance (in shares) at Dec. 31, 2018	10,523,035					10,523,035
Balance at Dec. 31, 2018	$ 105	26,513	15,683	783	(204)	$ 42,880
Net earnings (loss)						$ 1,598
Repurchase and retirement of common stock (in shares)						(39,158,000)
Repurchase and retirement of common stock						$ (179)
Balance (in shares) at Sep. 30, 2019	10,604,132					10,604,132
Balance at Sep. 30, 2019	$ 106	26,971	17,281	615	(204)	$ 44,769
Balance (in shares) at Mar. 31, 2019	10,603,335
Balance at Mar. 31, 2019	$ 106	26,695	16,821	700	(204)	44,118
Net earnings (loss)			(187)			(187)
Other comprehensive income (loss)				59		59
Amortization of deferred compensation related to stock-based awards		213				213
Issuance of unvested shares of restricted stock (in shares)	35,380
Issuance of unvested shares of restricted stock
Forfeiture of unvested shares of restricted stock (in shares)	(12,325)
Balance (in shares) at Jun. 30, 2019	10,626,390
Balance at Jun. 30, 2019	$ 106	26,908	16,634	759	(204)	44,203
Net earnings (loss)			647			647
Other comprehensive income (loss)				(144)		(144)
Amortization of deferred compensation related to stock-based awards		242				242
Issuance of unvested shares of restricted stock (in shares)	16,900
Issuance of unvested shares of restricted stock
Repurchase and retirement of common stock (in shares)	(39,158)
Repurchase and retirement of common stock		(179)				$ (179)
Balance (in shares) at Sep. 30, 2019	10,604,132					10,604,132
Balance at Sep. 30, 2019	$ 106	$ 26,971	$ 17,281	$ 615	$ (204)	$ 44,769