Basis of Presentation and Significant Accounting Policies - Basic and Diluted Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Loss from continuing operations, net of tax	$ (257)	$ (1,504)	$ (1,475)	$ (1,657)	$ (914)	$ (1,187)	$ (350)	$ (1,388)	$ (4,893)	$ (3,839)
Deemed dividend on Series A redeemable preferred stock	(596)	0	0	0					(596)	0
Net loss from continuing operations attributable to common shareholders									(5,489)	(3,839)
Income from discontinued operations, net of tax	0	0	266	0	$ (680)	$ (239)	$ 0	$ 5,494	266	4,575
Net (loss) income attributable to common shareholders	$ (853)	$ (1,504)	$ (1,209)	$ (1,657)					$ (5,223)	$ 736
Weighted average shares outstanding - basic (in shares)									2,041	2,016
Dilutive potential common shares:
Weighted average shares outstanding - diluted (in shares)									2,041	2,016
Net income (loss) per common share - basic and diluted
Net loss per share, continuing operations (in usd per share)									$ (2.40)	$ (1.90)
Preferred dividends per share (in usd per share)									(0.29)	(0.00)
Net loss from continuing operations per share - basic and diluted (in usd per share)	$ (0.42)	$ (0.74)	$ (0.72)	$ (0.82)	$ (0.45)	$ (0.59)	$ (0.17)	$ (0.69)	(2.69)	(1.90)
Net income (loss) from discontinued operations per share - basic and diluted (in usd per share)	$ 0.00	$ 0.00	$ 0.13	$ 0.00	$ (0.34)	$ (0.12)	$ 0.00	$ 2.73	0.13	2.27
Net income (loss) per share — basic and diluted (in usd per share)									$ (2.56)	$ 0.37
Antidilutive common shares excluded from computation of net income (in shares)									78	50
Stock Options
Dilutive potential common shares:
Dilutive potential common shares (in shares)									0	0
Net income (loss) per common share - basic and diluted
Antidilutive common shares excluded from computation of net income (in shares)									54	34
Restricted Stock Units (RSUs)
Dilutive potential common shares:
Dilutive potential common shares (in shares)									0	0
Net income (loss) per common share - basic and diluted
Antidilutive common shares excluded from computation of net income (in shares)									24	16