XML 116 R101.htm IDEA: XBRL DOCUMENT v3.7.0.1
Long-term Obligations - CWind Credit Facilities (Details)
$ in Thousands, € in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2016
GBP (£)
Dec. 31, 2016
EUR (€)
Feb. 29, 2016
GBP (£)
note_payable
Debt Instrument [Line Items]        
Outstanding debt | $ $ 388,702      
CWind Limited | Convertible notes        
Debt Instrument [Line Items]        
Number of instruments | note_payable       14
Aggregate principal amount       £ 18,100,000.0
Outstanding debt   £ 14,200,000    
Minimum | CWind Limited | Convertible notes        
Debt Instrument [Line Items]        
Interest rate (as a percent)       7.10%
Maximum | CWind Limited | Convertible notes        
Debt Instrument [Line Items]        
Interest rate (as a percent)       7.62%
Germany | Base Rate        
Debt Instrument [Line Items]        
Variable rate floor 0.25%      
Revolving Credit Facility | Germany | CWind Limited        
Debt Instrument [Line Items]        
Interest rate (as a percent) 2.00% 2.00% 2.00%  
Line of credit, maximum amount   £ 1,500,000.0    
Line of credit outstanding amount | €     € 0.3  
Revolving Credit Facility | United Kingdom | CWind Limited        
Debt Instrument [Line Items]        
Line of credit outstanding amount   £ 200,000