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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Schedule by Year of Future Minimum Lease Payments for Noncancellable Operating Leases

The following is a schedule by year of future minimum lease payments for noncancellable operating leases as of December 31, 2017 (dollars in thousands):

2018		$	230,083
2019			207,129
2020			184,872
2021			167,879
2022			135,451
Thereafter			438,121
Total minimum payment required		$	1,363,535

Composition of Total Rental Expense under Noncancellable

The composition of total rental expense under noncancellable operating leases consisted of the following (dollars in thousands):

		Year Ended December 31,
			2017				2016				2015
Minimum rentals		$	276,676			$	252,285			$	236,965
Less sublease rentals			(3,446	)			(4,322	)			(4,673	)
		$	273,230			$	247,963			$	232,292

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Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
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Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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