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Earnings (Loss) Per Share - Schedule of Reconciliation of Weighted Average Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018		Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income (loss)	$ 20	$ (1,094)	[1]	$ 35	$ (1,417)
Accrued dividend on Series A preferred stock	(91)	(81)	[1]	(178)	(158)
Loss applicable to common shareholders	$ (71)	$ (1,175)		$ (143)	$ (1,575)
Basic weighted average common shares outstanding	13,405	12,745		13,405	12,448
Dilutive effect of potentially dilutive securities
Diluted weighted average common shares outstanding	13,405	12,745		13,405	12,448
Basic net loss per share	$ (0.01)	$ (0.09)		$ (0.01)	$ (0.13)
Diluted net loss per share	$ (0.01)	$ (0.09)		$ (0.01)	$ (0.13)
[1] The condensed consolidated statement of operations for the three months ended June 30, 2018 was restated to exclude the loss on marketable equity securities of $78 thousand related to the three months ended March 31, 2018.

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