Summary of Significant Accounting Policies (Summary of Property, Plant and Equipment) (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total cost	$ 9,119,283	$ 8,940,059
Accumulated depreciation	(6,038,689)	(6,079,728)
Net property and equipment	3,080,594	2,860,331
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Total cost	508,381	530,722
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total cost	486,574	491,766
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total cost	4,107,330	3,971,272
Home Office [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 4,016,998	$ 3,946,299