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Commitments and Contingencies - Lease Costs and Other Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]  
Net lease cost $ 9,192
Right-of-use assets obtained in exchange for new operating lease liabilities 2,473
Operating lease  
Lessee, Lease, Description [Line Items]  
Lease costs 9,228
Cash paid for amounts included in the measurement of lease liabilities $ 6,513
Weighted-average discount rate (percent) 5.90%
Weighted-average remaining lease term (in years): 6 years 1 month 6 days
Ground lease  
Lessee, Lease, Description [Line Items]  
Lease costs $ 2,434
Sublease income (2,470)
Cash paid for amounts included in the measurement of lease liabilities $ 2,434
Weighted-average discount rate (percent) 10.20%
Weighted-average remaining lease term (in years): 48 years 1 month 6 days