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Leases - Schedule of Maturities of Operating lease liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
2020	$ 15,953
2021	16,039
2022	15,288
2023	15,482
2024	14,104
Thereafter	82,518
Total lease payments	159,384
Less: imputed interest	(41,937)
Total operating lease liabilities	117,447
Current operating lease liabilities	9,264
Non-current operating lease liabilities	108,183	$ 0
Total	$ 117,447

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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+ References

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-Publisher FASB
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-Publisher FASB
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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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