Annual report pursuant to Section 13 and 15(d)

4. Goodwill and Intangible Assets: (Intangible Assets) (Details)

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4. Goodwill and Intangible Assets: (Intangible Assets) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 3,466,458 $ 3,482,763
Accumulated Amortization (2,400,914) (2,243,809)
Total 1,065,544 1,238,954
Patents And Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 183,583 177,944
Accumulated Amortization (113,730) (72,957)
Total $ 69,853 $ 104,987
Weighted Average Useful Life (Years) 14 years 15 years
Customer and merchant Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 2,321,112 $ 2,343,112
Accumulated Amortization (1,581,876) (1,507,024)
Total $ 739,236 $ 836,088
Weighted Average Useful Life (Years) 10 years 10 years
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 197,924 $ 197,868
Accumulated Amortization (147,192) (137,872)
Total $ 50,732 $ 59,996
Weighted Average Useful Life (Years) 10 years 10 years
Acquired technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 684,540 $ 684,540
Accumulated Amortization (539,748) (523,448)
Total $ 144,792 $ 161,092
Weighted Average Useful Life (Years) 10 years 10 years
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 79,299 $ 79,299
Accumulated Amortization (18,368) (2,508)
Total $ 60,931 $ 76,791
Weighted Average Useful Life (Years) 2 years 2 years