Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Service revenue	$ 476	$ 334
Sales revenue	530	864
Total revenue	1,006	1,198
Cost of services, exclusive of depreciation expense shown below	561	551
Cost of product sales, exclusive of depreciation expense shown below	822	1,000
Depreciation and Amortization	58	123
Other Expense (Income)	8	(116)
Operating Income	(443)	(360)
Income tax expense	(97)	(50)
Income (loss) from discontinued operations, net of income taxes	(346)	(310)
Current assets	1,748	2,549
Non-current assets	990	1,048
Total assets	2,738	3,597
Current liabilities	500	221
Non-current liabilities	79	75
Total liabilities	579	$ 296
Cash provided by (used in) operating activities, discontinued operations	$ 500