Quarterly report pursuant to Section 13 or 15(d)

Intangible assets and liabilities other than goodwill and excess of cost over fair value of net assets acquired -Amounts related to intangible assets (Details)

v3.7.0.1
Intangible assets and liabilities other than goodwill and excess of cost over fair value of net assets acquired -Amounts related to intangible assets (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 2,576,606 $ 1,482,971
Less - accumulated amortization (478,122) (417,004)
Intangible assets, net 2,098,484 1,065,967
Unfavorable contract liability 10,453,501 0
Less - accumulated amortization (149,050) 0
Unfavorable contract liability, net 10,304,451 0
Product Certifications    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 598,264 544,651
Less - accumulated amortization (259,667) (233,992)
Intangible assets, net 338,597 310,659
Patents    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 649,081 681,155
Less - accumulated amortization (138,992) (123,012)
Intangible assets, net 510,089 558,143
Developed Technology    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 240,000 240,000
Less - accumulated amortization (68,000) (60,000)
Intangible assets, net 172,000 180,000
Favorable contract asset    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 1,071,096 0
Less - accumulated amortization (11,463) 0
Intangible assets, net 1,059,633 0
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 18,165 17,165
Less - accumulated amortization 0 0
Intangible assets, net $ 18,165 $ 17,165