Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2014		6,388	232
Balance at Dec. 31, 2014	$ 11,754	$ 64	$ (2,500)	$ 19,970	$ (5,285)	$ (495)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,624				1,624
Common stock dividends declared	(1,347)			45	(1,392)
Issuance/redemption of equity grants, net (in shares)		125
Issuance/redemption of equity grants, net	79	$ 1		78
Interest rate cash flow hedge	108					108
Tax impact of equity grant exercises	62			62
Stock based compensation	987			987
Balance (in shares) at Dec. 31, 2015		6,513	232
Balance at Dec. 31, 2015	13,267	$ 65	$ (2,500)	21,142	(5,053)	(387)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,811)				(1,811)
Common stock dividends declared	(1,366)			46	(1,412)
Issuance/redemption of equity grants, net (in shares)		79
Issuance/redemption of equity grants, net	(105)	$ 1		(106)
Interest rate cash flow hedge	582					582
Tax impact of equity grant exercises	65			65
Stock based compensation	788			788
Balance (in shares) at Dec. 31, 2016		6,592	232
Balance at Dec. 31, 2016	11,420	$ 66	$ (2,500)	21,935	(8,276)	195
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,827)				(4,827)
Common stock dividends declared	(1,384)			47	(1,431)
Issuance/redemption of equity grants, net (in shares)		95
Issuance/redemption of equity grants, net	(94)	$ 1		(95)
Interest rate cash flow hedge	514					514
Stock based compensation	833			833
Balance (in shares) at Dec. 31, 2017		6,687	232
Balance at Dec. 31, 2017	$ 6,462	$ 67	$ (2,500)	$ 22,720	$ (14,534)	$ 709