Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at Beginning at Dec. 31, 2017	$ 21	$ 54,006	$ 97,336	$ (60,619)	$ 90,744
Balance at Beginning (in shares) at Dec. 31, 2017	20,988,952			(4,497,771)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			1,947		1,947
Repurchase of treasury shares				$ (63)	(63)
Repurchase of treasury shares (in shares)				(8,798)
Amortization of unearned stock compensation		158			158
Balance at Ending at Mar. 31, 2018	$ 21	54,164	99,283	$ (60,682)	92,786
Balance at Ending (in shares) at Mar. 31, 2018	20,988,952			(4,506,569)
Balance at Beginning at Dec. 31, 2018	$ 21	53,514	105,975	$ (58,832)	100,678
Balance at Beginning (in shares) at Dec. 31, 2018	20,988,952			(4,377,301)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			2,284		2,284
Repurchase of treasury shares				$ (8)	(8)
Repurchase of treasury shares (in shares)				(1,506)
Amortization of unearned stock compensation		342			342
Impact of released deferred restricted stock units				$ 16	$ 16
Impact of released deferred restricted stock units (in shares)				2,251
Impact of adoption of ASU 2016-02 (Note 7) (Impact of adoption of ASU 2016-02 [Member]) at Mar. 31, 2019			$ 101		$ 101
Balance at Ending at Mar. 31, 2019	$ 21	$ 53,856	$ 108,360	$ (58,824)	$ 103,413
Balance at Ending (in shares) at Mar. 31, 2019	20,988,952			(4,376,556)