Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Services revenues	$ 7,868,000	$ 5,512,000	$ 14,894,000	$ 9,816,000
Products revenues	377,000	337,000	770,000	800,000
Total Net Sales	8,245,000	$ 5,849,000	15,664,000	$ 10,616,000
Products and services transferred over time
Services revenues	7,868,000		14,894,000
Products revenues	0		0
Total Net Sales	7,868,000		14,894,000
Products and services transferred at a point in time
Services revenues	0		0
Products revenues	377,000		770,000
Total Net Sales	$ 377,000		$ 770,000