Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Service revenue	$ 427	$ 299	$ 902	$ 633
Sales revenue	1,179	5,392	1,710	6,256
Total revenue	1,606	5,691	2,612	6,889
Cost of services, exclusive of depreciation expense shown below	309	63	874	390
Cost of product sales, exclusive of depreciation expense shown below	1,361	3,420	2,180	4,645
Depreciation and Amortization	44	114	102	236
Other Expense	14	42	22	(74)
Operating Income (Loss)	(122)	2,052	(566)	1,692
Income tax expense (benefit)	206	297	108	247
Income (loss) from discontinued operations, net of income taxes	(328)	1,755	(674)	1,445
Current assets	2,529	2,549	2,529	2,549
Non-current assets	1,861	1,048	1,861	1,048
Total assets	4,390	3,597	4,390	3,597
Current liabilities	840	221	840	221
Non-current liabilities	75	75	75	75
Total liabilities	$ 915	$ 296	915	296
Cash provided by (used in) operating activities, discontinued operations			$ (400)	$ 100