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Related Party Transactions - (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2016	Dec. 07, 2015
Related party transactions
Proceeds from Notes Payable			$ 17,500
Repayments of Notes Payable			12,500
Energy Capital Facility
Related party transactions
Maximum amount available under facility				$ 10,000
Proceeds from Notes Payable			2,500
Repayments of Notes Payable			2,500
Chairman
Related party transactions
Share-based compensation, amount earned			785
Chairman \| Restricted Stock Award
Related party transactions
Restricted stock awarded to board member		398,525
Energy Capital \| Energy Capital Facility
Related party transactions
Maximum amount available under facility				$ 10,000
Proceeds from Notes Payable			2,500
Repayments of Notes Payable			$ 2,500
Vesting on grant date \| Chairman \| Restricted Stock Award
Related party transactions
Restricted stock awarded to board member	300,000
Vesting percentage		50.00%