Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at Beginning at Dec. 31, 2016	$ 21	$ 53,824	$ 97,550	$ (61,264)	$ 90,131
Balance at Beginning (in shares) at Dec. 31, 2016	20,988,952			(4,531,427)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			(222)		(222)
Repurchase of treasury shares				$ (177)	(177)
Repurchase of treasury shares (in shares)				(27,156)
Amortization of unearned stock compensation		1,004			1,004
Impact of forfeited awards		361		$ (361)
Impact of forfeited awards (in shares)				(26,707)
Impact of released vested restricted stock units		(372)		$ 372
Impact of released vested restricted stock units (in shares)				27,519
Issuance of restricted stock awards		(811)		$ 811
Issuance of restricted stock award (in shares)				60,000
Dividends accrual reversal			8		8
Balance at Ending at Dec. 31, 2017	$ 21	54,006	97,336	$ (60,619)	90,744
Balance at Ending (in shares) at Dec. 31, 2017	20,988,952			(4,497,771)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			8,636		8,636
Repurchase of treasury shares				$ (175)	(175)
Repurchase of treasury shares (in shares)				(25,368)
Amortization of unearned stock compensation		1,059			1,059
Amortization of reclassed liability awards		411			411
Impact of forfeited awards		179		$ (179)
Impact of forfeited awards (in shares)				(13,332)
Impact of released vested restricted stock units		(353)		$ 353
Impact of released vested restricted stock units (in shares)				26,185
Issuance of restricted stock awards		(1,788)		$ 1,788
Issuance of restricted stock award (in shares)				132,985
Dividends accrual reversal			3		3
Balance at Ending at Dec. 31, 2018	$ 21	53,514	105,975	$ (58,832)	100,678
Balance at Ending (in shares) at Dec. 31, 2018	20,988,952			(4,377,301)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			2,550		2,550
Repurchase of treasury shares				$ (1,188)	(1,188)
Repurchase of treasury shares (in shares)				(262,231)
Amortization of unearned stock compensation		1,471			1,471
Impact of forfeited awards		117		$ (117)
Impact of forfeited awards (in shares)				(9,142)
Impact of released vested restricted stock units		(1,019)		$ 1,019
Impact of released vested restricted stock units (in shares)				77,046
Settlement of director's deferred compensation				$ 16	16
Settlement of director's deferred compensation (in shares)				2,251
Issuance of restricted stock awards		(1,779)		$ 1,779
Issuance of restricted stock award (in shares)				137,375
Cumulative effect of accounting change (Note 10)			101		101
Balance at Ending at Dec. 31, 2019	$ 21	$ 52,304	$ 108,626	$ (57,323)	$ 103,628
Balance at Ending (in shares) at Dec. 31, 2019	20,988,952			(4,432,002)