Consolidated Statements of Shareholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance (in shares) at Dec. 31, 2018		6,751	232
Balance at Dec. 31, 2018	$ (1,198)	$ 68	$ (2,500)	$ 23,413	$ (23,016)	$ 837
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(36,063)				(36,063)
Issuance/redemption of equity grants, net (in shares)		157
Issuance/redemption of equity grants, net	41	$ 1		40
Interest rate cash flow hedge	(269)					(269)
Stock based compensation	573			573
Balance (in shares) at Dec. 31, 2019		6,908	232
Balance at Dec. 31, 2019	(36,916)	$ 69	$ (2,500)	24,026	(59,079)	568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,159				5,159
Issuance/redemption of equity grants, net (in shares)		171
Issuance/redemption of equity grants, net	2	$ 2
Interest rate cash flow hedge	(120)				410	(530)
Stock based compensation	570			570
Balance (in shares) at Dec. 31, 2020		7,079	232
Balance at Dec. 31, 2020	$ (31,305)	$ 71	$ (2,500)	$ 24,596	$ (53,510)	$ 38