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Leases - Supplemental Cash Flow Information Related to Leases (Details) $ 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	$ 11,664
Operating cash flows from finance leases	972
Financing cash flows from finance leases	969
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 5,032

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Cash Flow, Lessee [Abstract]

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- Definition

Right-Of-Use Asset Obtained In Exchange For Lease Liabilities [Abstract]

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- Definition

Amount of interest paid on finance lease liability.

+ References

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-Publisher FASB
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-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount of cash outflow for principal payment on finance lease.

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

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

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