LEASES - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Finance Lease, Cost [Abstract]
Amortization of right-of-use assets	$ 3,735	$ 3,805	$ 10,257	$ 10,787
Interest on lease liabilities	638	689	1,916	1,886
Operating lease cost	23,722	23,063	70,578	64,506
Short-term lease and other	2,480	835	6,569	2,648
Variable lease cost	4,320	3,647	9,920	8,092
Sublease income	(5,691)	(6,490)	(17,201)	(19,050)
Total lease cost	$ 29,204	$ 25,549	$ 82,039	$ 68,869

No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

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-Publisher FASB
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-SubTopic 20
-Section 50
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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
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- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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- Definition

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

+ References

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- Definition

Amount of sublease income excluding finance and operating lease expense.

+ References

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- Definition

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

+ References

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