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Components of Operating Lease Expense (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Operating Lease Cost	$ 17,776
Short-term lease cost	2,173
Variable lease cost	843
Sublease income	(49)
Total lease cost	$ 20,743

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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X

- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

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X

- Definition

Amount of sublease income excluding finance and operating lease expense.

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X

- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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