INTERIM 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 (Loss)
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(103)				(103)
Common stock dividends declared	(350)			13	(363)
Issuance/redemption of equity grants, net (in shares)		86
Issuance/redemption of equity grants, net	(78)	$ 1		(79)
Interest rate cash flow hedge	208					208
Stock-based compensation	236			236
Balance (in shares) at Mar. 31, 2018		6,773	232
Balance at Mar. 31, 2018	6,375	$ 68	$ (2,500)	22,890	(15,000)	917
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(414)
Balance (in shares) at Jun. 30, 2018		6,768	232
Balance at Jun. 30, 2018	6,157	$ 68	$ (2,500)	23,249	(15,673)	1,013
Balance (in shares) at Mar. 31, 2018		6,773	232
Balance at Mar. 31, 2018	6,375	$ 68	$ (2,500)	22,890	(15,000)	917
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(311)				(311)
Common stock dividends declared	(351)			11	(362)
Issuance/redemption of equity grants, net (in shares)		(5)
Issuance/redemption of equity grants, net	0
Interest rate cash flow hedge	96					96
Stock-based compensation	348			348
Balance (in shares) at Jun. 30, 2018		6,768	232
Balance at Jun. 30, 2018	6,157	$ 68	$ (2,500)	23,249	(15,673)	1,013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(7,397)				(7,397)
Common stock dividends declared	(353)			9	(362)
Issuance/redemption of equity grants, net (in shares)		(19)
Issuance/redemption of equity grants, net	(140)			(140)
Interest rate cash flow hedge	46					46
Stock-based compensation	149			149
Balance (in shares) at Sep. 30, 2018		6,749	232
Balance at Sep. 30, 2018	(1,538)	$ 68	$ (2,500)	23,267	(23,432)	1,059
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	416				416
Issuance/redemption of equity grants, net (in shares)		2
Issuance/redemption of equity grants, net	0
Interest rate cash flow hedge	(222)					(222)
Stock-based compensation	146			146
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)	(3,346)				(3,346)
Issuance/redemption of equity grants, net (in shares)		163
Issuance/redemption of equity grants, net	42	$ 1		41
Interest rate cash flow hedge	(63)					(63)
Stock-based compensation	140			140
Balance (in shares) at Mar. 31, 2019		6,914	232
Balance at Mar. 31, 2019	(4,425)	$ 69	$ (2,500)	23,594	(26,362)	774
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)	(27,942)
Balance (in shares) at Jun. 30, 2019		6,911	232
Balance at Jun. 30, 2019	(29,062)	$ 69	$ (2,500)	23,738	(50,958)	589
Balance (in shares) at Mar. 31, 2019		6,914	232
Balance at Mar. 31, 2019	(4,425)	$ 69	$ (2,500)	23,594	(26,362)	774
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(24,596)				(24,596)
Issuance/redemption of equity grants, net (in shares)		(3)
Issuance/redemption of equity grants, net	0
Interest rate cash flow hedge	(185)					(185)
Stock-based compensation	144			144
Balance (in shares) at Jun. 30, 2019		6,911	232
Balance at Jun. 30, 2019	$ (29,062)	$ 69	$ (2,500)	$ 23,738	$ (50,958)	$ 589