Segment Revenues (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Total Revenues	$ 124,574,000	$ 109,812,000
United States
Total Revenues	109,823,000	95,652,000
Canada
Total Revenues	6,824,000	6,804,000
Europe
Total Revenues	6,957,000	6,385,000
Other International
Total Revenues	970,000	971,000
Total International
Total Revenues	$ 14,751,000	$ 14,160,000