Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 2,909
Right-of-use operating lease assets obtained in exchange for operating lease obligations (non-cash)	$ 26,499
Weighted Average Remaining Lease Term, Operating leases	6 years 6 months
Weighted Average Discount Rate, Operating leases	4.60%

Cash paid for amounts included in measurement of lease liabilities [Abstract]

No definition available.

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

+ References

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