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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of operating leases | The Company’s operating leases expire at various dates through 2028:
For the years ended December 31, | 2017 |  | 2016 |  | 2015
(in thousands) |  |  |  |  |
Rental Expense | $ | 72,030 |  |  | $ | 66,774 |  |  | $ | 60,508 |
Schedule of future commitments under operating leases | Future commitments under operating leases are as summarized:
(in thousands) | Operating leases
2018 | $ | 34,112 |
2019 | 24,890 |
2020 | 21,355 |
2021 | 17,358 |
2022 | 14,313 |
Thereafter | 31,511 |
Total minimum obligation | $ | 143,539 |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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