Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ 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
Quarterly Financial Information Disclosure [Abstract]
Total Revenues	$ 36,142	$ 28,333	$ 25,798	$ 23,912	$ 25,928	$ 25,707	$ 27,080	$ 25,465	$ 114,185	$ 104,180
Gross profit	7,934	5,196	5,004	3,981	3,739	4,358	5,567	4,607	22,115	18,271
Loss from operations	(102)	(1,213)	(1,378)	(1,135)	(1,905)	(783)	(248)	(1,609)	(3,828)	(4,545)
Loss from continuing operations	(257)	(1,504)	(1,475)	(1,657)	(914)	(1,187)	(350)	(1,388)	(4,893)	(3,839)
Net income from discontinued operations	0	0	266	0	(680)	(239)	0	5,494	266	4,575
Net (loss) income	(257)	(1,504)	(1,209)	(1,657)	$ (1,594)	$ (1,426)	$ (350)	$ 4,106	(4,627)	736
Deemed dividend on Series A redeemable preferred stock	(596)	0	0	0					(596)	0
Net Income (Loss) Available to Common Stockholders, Basic	$ (853)	$ (1,504)	$ (1,209)	$ (1,657)					$ (5,223)	$ 736
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)	$ (0.42)	$ (0.74)	$ (0.59)	$ (0.82)	$ (0.79)	$ (0.71)	$ (0.17)	$ 2.04
Business Acquisition [Line Items]
Proceeds from sale of property and equipment						$ 1,500
Proceeds from sale of buildings						1,000
Loss on sale of buildings						$ 500			$ 232	$ 507
ATRM Holdings, Inc.
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 17,452								$ 17,452