Leases - Lease Cost (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 9,240	$ 18,814
Right-of-use assets obtained in exchange for lease obligations, operating leases	$ 579	$ 24,259
Weighted average remaining lease term, operating leases	6 years 6 months	6 years 6 months
Weighted average discount rate, operating lease	4.40%	4.40%

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
-Topic 842
-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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