Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounting Policies [Abstract]
Lease losses related to consolidation of leased assets		$ (42,248)		$ 42,200
Deferred rent liability				20,500
Operating lease right-of-use assets	$ 194,500	218,625		$ 0
Operating lease liabilities	256,400	268,361
Adjustment to retained earnings	$ 800	$ 838	$ 132,778

No definition available.

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- Definition

Amount of the cumulative effect on retained earnings net of related income tax effect.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
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The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

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-Publisher FASB
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-Topic 840
-SubTopic 20
-Section 25
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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-Subparagraph (b)
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Amount of lessee's right to use underlying asset under operating lease.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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