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Commitments and Contingencies - Supplemental Balance Sheet (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Operating lease right-of-use assets $ 49,263
Operating lease liabilities $ 71,415
Weighted-average remaining lease term 69 years 1 month 22 days
Weighted-average discount rate (percent) 9.10%