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Leases - Summary of Maturities of Lease Commitments (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Operating Lease Liabilities Payments Due [Abstract]
2020 (for remaining six months)	$ 12,533
2021	51,049
2022	48,120
2023	44,102
2024	35,570
Thereafter	165,087
Total undiscounted lease commitments	356,461
Less: commitments for leases not yet commenced	(76,356)
Less: interest	(43,164)
Present value of lease liabilities	236,941
Less: operating lease liabilities, current	(31,385)	$ (14,577)
Operating lease liabilities, non-current	$ 205,556	$ 174,873

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