Segment Revenues (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenues - United States										$ 66,694,000
Revenues - International									16,901,000	17,676,000
Total Revenues	21,379,000	22,135,000	28,412,000	17,651,000	19,535,000	20,363,000	27,594,000	16,878,000	89,576,777	84,369,770
United States
Revenues - United States									72,676,000	66,694,000
Total Revenues									73,608,000	67,510,000
Canada
Revenues - International									8,092,000	8,808,000
Total Revenues									8,092,000	8,808,000
Europe
Revenues - International									7,877,000	8,052,000
Total Revenues									7,877,000	8,052,000
Other International
Revenues - International									$ 932,000	$ 816,000