INTERIM CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($) shares in Thousands, $ in Thousands	Total	Interest Rate Swap	Common Stock	Treasury Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Interest Rate Swap
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)	(753)					(753)
Issuance of equity grants, net (in shares)			190
Issuance of equity grants, net	4		$ 1		3
Interest rate cash flow hedge	(279)	$ (279)						$ (279)
Stock-based compensation	338				338
Balance (in shares) at Mar. 31, 2020			7,098	232
Balance at Mar. 31, 2020	(37,606)		$ 70	$ (2,500)	24,367	(59,832)	289
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,888					1,888
Issuance of equity grants, net (in shares)			106
Issuance of equity grants, net	64		$ 1		63
Interest rate cash flow hedge	(9)
Interest rate cash flow hedges	29					38	(9)
Stock-based compensation	95				95
Balance (in shares) at Mar. 31, 2021			7,185	232
Balance at Mar. 31, 2021	$ (29,229)		$ 72	$ (2,500)	$ 24,754	$ (51,584)	$ 29