Annual report pursuant to Section 13 and 15(d)

12. Fair Value Measurements of Financial Instruments (Details)

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12. Fair Value Measurements of Financial Instruments (Details) - Fair Value Measurements Recurring [Member] - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Fair Value Inputs Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill $ 0 $ 0
Intangibles, net 0 0
Fair Value Inputs Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill 0 0
Intangibles, net 0 0
Fair Value Inputs Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill 496,532 537,550
Intangibles, net 1,762,211 1,781,448
Goodwill [Member] | Change During Period Fair Value Disclosure [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Gain (Loss) from fair value measurement 0 0
Intangible Assets [Member] | Change During Period Fair Value Disclosure [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Gain (Loss) from fair value measurement $ 0 $ 0