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Summary of Significant Accounting Policies - Undiscounted Lease Cash Flows (Details) | Jun. 30, 2020 USD ($)
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Finance Lease, Liability, Payment, Due [Abstract] |
Total | $ 81,440,000
Finance Lease, Liability | 41,517,000
Lessee, Operating Lease, Liability, Payment, Due [Abstract] |
Lessee, Operating Lease, Liability, to be Paid, after Year Five | 225,538,000
Lease liabilities | $ 352,267,000

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