Summary of Significant Accounting Policies (Summary of Property, Plant and Equipment) (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total cost	$ 8,940,059	$ 8,653,054
Accumulated depreciation	(6,079,728)	(5,619,706)
Net property and equipment	2,860,331	3,033,348
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Total cost	530,722	505,788
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total cost	491,766	457,218
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total cost	3,971,272	3,823,416
Home Office [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 3,946,299	$ 3,866,632