Earnings Per Share - Components of Diluted Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net loss from continuing operations	$ (3,089)			$ (5,467)			$ (18,955)	$ (6,859)
Amortization of preferred stock issuance costs	0		$ (42)	(52)	$ (52)	$ (51)	(42)	(155)
Numerator for basic and diluted EPS from continuing operations – net loss from continuing operations attributable to common stockholders	(3,089)			(5,519)			(18,997)	(7,014)
Numerator for basic and diluted EPS from discontinued operations - net gain from discontinued operations	14,843			1,944			19,117	5,785
Net income (loss)	11,754	$ (7,835)	(3,757)	(3,523)	3,289	(840)	162	(1,074)
Amortization of preferred stock issuance costs	0		$ (42)	(52)	$ (52)	$ (51)	(42)	(155)
Net income (loss) attributable to common stockholders	$ 11,754			$ (3,575)			$ 120	$ (1,229)
Denominator
Weighted average common stock outstanding – basic (in shares)	1,632,117			1,590,739			1,625,727	1,587,448
Weighted average common stock outstanding – diluted (in shares)	1,632,117			1,590,739			1,625,727	1,587,448
Earnings (loss) per share - basic
Continuing operations – basic (usd per share)	$ (1.89)			$ (3.47)			$ (11.69)	$ (4.42)
Discontinued operations – basic (usd per share)	9.09			1.22			11.76	3.65
Earnings (loss) per basic common share (usd per share)	7.20			(2.25)			0.07	(0.77)
Earnings (loss) per share of common stock – diluted:
Continuing operations – diluted (usd per share)	(1.89)			(3.47)			(11.69)	(4.42)
Discontinued operations – diluted (usd per share)	9.09			1.22			11.76	3.65
Earnings (loss) per diluted common share (usd per share)	$ 7.20			$ (2.25)			$ 0.07	$ (0.77)