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Debt, Net - Preferred Equity Certificates and Finance Lease Liabilities - Narrative (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Finance lease liabilities $ 5,904
Implicit interest rate (as a percent) 4.40%
Minimum  
Debt Instrument [Line Items]  
Implicit interest rate (as a percent) 3.00%
Maximum  
Debt Instrument [Line Items]  
Implicit interest rate (as a percent) 5.70%