Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Change in Level 3 Assets (Details)

v3.7.0.1
Fair Value Measurements - Change in Level 3 Assets (Details) - Fair Value, Measurements, Recurring
1 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
trading_day
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value at June 30, 2017 $ (224,359)  
Eurosite Power Inc    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value at June 30, 2017 (224,359)  
Eurosite Power Inc | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Number of trading days included in fair value measurement | trading_day   15
Unrealized loss recognized in other comprehensive loss $ 295,209 $ 295,209