Annual report pursuant to Section 13 and 15(d)

Debt - Construction Loan (Details)

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Debt - Construction Loan (Details) - Construction Loan Payable
12 Months Ended
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Non-recourse construction loan $ 200,000,000
Optional extension 1 year
Borrowings outstanding $ 140,000,000
LIBOR  
Debt Instrument [Line Items]  
Interest rate 2.70%