Segment Information - Segment Revenues (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Total Revenues	$ 164,003,040	$ 142,457,342
United States
Total Revenues	138,921,000	124,059,000
Canada
Total Revenues	10,986,000	6,678,000
Europe
Total Revenues	12,826,000	10,062,000
Other International
Total Revenues	1,270,000	1,658,000
Total International
Total Revenues	$ 25,082,000	$ 18,398,000