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Summary of Significant Accounting Policies - Other Information (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($)
Accounting Policies [Abstract] |
Financing cash flows for finance leases | $ 281
Operating cash flows for finance leases | 1,176
Operating cash flows for operating leases | 18,469
Right-of-use assets obtained in exchange for new lease liabilities: Finance leases | 9,983
Right-of-use assets obtained in exchange for new lease liabilities: Operating leases | $ (10,711)
Weighted-average remaining lease term (in years): Finance leases | 11 years 5 months 1 day
Weighted-average remaining lease term (in years): Operating leases | 9 years 9 months 3 days
Weighted-average discount rate: Finance leases | 18.31%
Weighted-average discount rate: Operating leases | 6.86%

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