Annual report pursuant to Section 13 and 15(d)

Business Acquisitions and Related Transactions - Purchase Price Allocation (Details)

v3.8.0.1
Business Acquisitions and Related Transactions - Purchase Price Allocation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]      
Total, net of cash received $ 2,409 $ 3,575 $ 0
Solar Photovoltaic Projects And EEX      
Business Acquisition [Line Items]      
Prepaid expenses and other current assets 256 263 0
Property and equipment and energy assets 7,788 12,815 0
Purchase price 8,044 13,078 0
Total, net of cash received 8,044 13,078 0
Debt assumed 5,635 9,503 0
Total fair value of consideration $ 2,409 $ 3,575 $ 0