Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Liabilities Other Than Goodwill (Details)

v3.19.2
Intangible Assets and Liabilities Other Than Goodwill (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ 23,649 $ 26,473 $ 47,748 $ 51,376
Net credit to cost of sales for amortization of contract related intangible assets and liabilities $ 113,442 $ 216,107 $ 286,734 $ 444,166