Summary of Significant Accounting Policies (Summary of Property, Plant and Equipment) (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total cost	$ 8,479,991	$ 8,431,900
Accumulated depreciation	(5,250,364)	(5,099,090)
Net property and equipent	3,229,627	3,332,810
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Total cost	608,511	603,046
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total cost	447,132	436,568
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total cost	3,557,716	3,542,339
Home Office [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 3,866,632	$ 3,849,947