XML 116 R68.htm IDEA: XBRL DOCUMENT v3.20.1
Outstanding Loans and Security Agreements - Non-recourse Debt Facilities (Additional Information) (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
Sep. 30, 2013
USD ($)
Mar. 31, 2013
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Feb. 28, 2017
USD ($)
Jun. 30, 2015
USD ($)
lender
Jul. 31, 2014
USD ($)
Dec. 31, 2012
USD ($)
Debt Instrument [Line Items]                    
Unused borrowing capacity         $ 1,220,000 $ 1,220,000        
LIBOR 2.5% term loan due December 2021 | LIBOR                    
Debt Instrument [Line Items]                    
LIBOR margin (as a percentage)         2.50%          
Senior secured notes | 6.07% senior secured notes due March 2030                    
Debt Instrument [Line Items]                    
Interest rate percentage         6.10%          
Term loan | 7.5% term loan due September 2028                    
Debt Instrument [Line Items]                    
Interest rate percentage         7.50% 7.50%        
Term loan | LIBOR 2.5% term loan due December 2021 | LIBOR                    
Debt Instrument [Line Items]                    
LIBOR margin (as a percentage)         2.50%          
PPA II | Senior secured notes | Senior Secured Notes due March 2025, Non-Recourse                    
Debt Instrument [Line Items]                    
Interest rate percentage       5.22%            
Total amount of loan proceeds       $ 144,800,000            
Debt repayment—principal       28,800,000            
Debt proceeds used for debt service reserves and issuance costs       21,700,000            
Debt used to fund remaining system purchases       $ 94,300,000            
Debt face amount $ 77,600,000                  
Write off of deferred debt issuance cost $ 11,200,000                  
PPA IIIa                    
Debt Instrument [Line Items]                    
Debt repayment—principal         $ 8,736,000 $ 6,631,000        
PPA IIIa | Term loan | 7.5% term loan due September 2028                    
Debt Instrument [Line Items]                    
Interest rate percentage                   7.50%
Debt minimum debt service reserves required         3,800,000 3,800,000        
Debt face amount                   $ 46,800,000
PPA IIIb | Term loan | Term Loan due October 2020, Non-Recourse                    
Debt Instrument [Line Items]                    
Debt minimum debt service reserves required         1,800,000          
Debt face amount     $ 32,500,000              
PPA IIIb | Term loan | Term Loan due October 2020, Non-Recourse | LIBOR                    
Debt Instrument [Line Items]                    
LIBOR margin (as a percentage)     5.20%              
PPA IV                    
Debt Instrument [Line Items]                    
Debt repayment—principal         $ 18,745,000 $ 18,012,000        
PPA IV | Senior secured notes | 6.07% senior secured notes due March 2030                    
Debt Instrument [Line Items]                    
Interest rate percentage         6.07% 6.10%     6.07%  
Debt minimum debt service reserves required         $ 8,100,000 $ 8,000,000        
Debt face amount                 $ 99,000,000  
PPA V                    
Debt Instrument [Line Items]                    
Debt repayment—principal         10,419,000 9,453,000        
PPA V | Term loan | LIBOR 2.5% term loan due December 2021                    
Debt Instrument [Line Items]                    
Debt face amount               $ 131,200,000    
Number of lenders | lender               5    
Commitment fee percentage   0.50%                
PPA V | Term loan | Term Loan due December 2021, Years One Through Three, Non-Recourse | LIBOR                    
Debt Instrument [Line Items]                    
LIBOR margin (as a percentage)   2.25%                
PPA V | Term loan | Term Loan due December 2021, After Year Three, Non-Recourse | LIBOR                    
Debt Instrument [Line Items]                    
LIBOR margin (as a percentage)   2.50%                
Letters of Credit | PPA V                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity             $ 6,200,000 $ 6,400,000    
Amount outstanding         5,000,000 5,000,000        
Unused borrowing capacity         1,200,000 $ 1,200,000        
Variable Interest Entity, Primary Beneficiary | PPA IIIb | PPA IIIb | Term loan | Term Loan due October 2020, Non-Recourse                    
Debt Instrument [Line Items]                    
Debt face amount         $ 24,200,000