Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Service revenue	$ 167	$ 265	$ 1,069	$ 898
Sales revenue	2,058	3,095	3,768	9,351
Total revenue	2,225	3,360	4,837	10,249
Cost of services, exclusive of depreciation expense shown below	87	91	961	482
Cost of product sales, exclusive of depreciation expense shown below	1,944	2,438	4,124	7,082
Depreciation and Amortization	14	98	115	334
Other Expense	(1)	(74)	22	(148)
Operating Income (loss)	181	807	(385)	2,499
Income tax expense (benefit)	(27)	121	81	368
Income (loss) from discontinued operations, net of income taxes	208	$ 686	(466)	$ 2,131
Current assets	3,262		3,262		$ 2,549
Non-current assets	1,847		1,847		1,048
Total assets	5,109		5,109		3,597
Current liabilities	740		740		221
Non-current liabilities	77		77		75
Total liabilities	817		817		$ 296
Cash provided by (used in) operating activities, discontinued operations	$ (800)		$ (500)