Income (Loss) Per Common Share - Computation of Weighted Average Basic and Diluted Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Loss from continuing operations	$ (8,700)	$ (2,300)
Income (loss) from discontinued operations, net of income taxes	12,800	(6,100)
Net Income (loss)	$ 4,100	$ (18,600)
Weighted average number of diluted shares outstanding during the period - basic and diluted	5,100,000	4,700,000
Continuing operations	$ (1.71)	$ (0.49)
Discontinued operations	2.51	(1.30)
Net income (loss)	$ 0.80	$ (1.79)
Anti-dilutive shares excluded from calculation	100,000	300,000