Annual report pursuant to Section 13 and 15(d)

Segments of Business - Summary of Revenues, Operating Loss, Long-Lived Assets By Geographic Area (Details)

v3.19.1
Segments of Business - Summary of Revenues, Operating Loss, Long-Lived Assets By Geographic Area (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]    
Revenue: $ 40,613,709 $ 41,432,863
Operating Income (Loss): (5,355,101) (5,235,377)
Non-current Assets: 28,118,104 28,383,458
United States [Member]    
Segment Reporting Information [Line Items]    
Revenue: 31,930,427 32,804,708
Operating Income (Loss): [1] (5,666,969) (4,554,429)
Non-current Assets: 24,795,368 24,630,101
South Africa [Member]    
Segment Reporting Information [Line Items]    
Revenue: 5,825,967 5,777,306
Operating Income (Loss): [1] 139,088 (798,914)
Non-current Assets: 909,514 1,203,610
Europe [Member]    
Segment Reporting Information [Line Items]    
Revenue: 2,857,315 2,850,849
Operating Income (Loss): [1] 172,780 117,966
Non-current Assets: $ 2,413,222 $ 2,549,747
[1] Note that Operating Income (Loss) includes non-cash impairment charges of $1.7 million and $1.5 for the nine months ended September 30, 2018 and 2017, respectively and $0 and $0.8 million for the three months ended September 30, 2018 and 2017, respectively.