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LEASES (TABLES) | 12 Months Ended
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Dec. 31, 2017
LEASES [ABSTRACT] |
Schedule of Future Minimum Lease Payments | The future minimum rental payments and receipts required under non-cancelable operating leases as of December 31, 2017 are as follows (in thousands):
|  | Operating |  | Sub-Lease |
|  | Leases |  | Income |
2018 |  | $ | 44,177 |  | $ | (2,470) |
2019 |  |  | 34,528 |  |  | (2,470) |
2020 |  |  | 26,471 |  |  | (2,470) |
2021 |  |  | 20,854 |  |  | (206) |
2022 |  |  | 17,215 |  |  | — |
Thereafter |  |  | 30,984 |  |  | — |
Total |  | $ | 174,229 |  | $ | (7,616) |
Schedule of Change in Asset Retirement Obligation Liability | . Following is a summary of the amounts recorded (in thousands):
|  | Balance at |  |  |  |  |  |  |  |  |  |  | Balance at |
|  | December 31, |  | Additions and |  |  |  |  |  |  |  | December 31, |
|  | 2016 |  | Modifications |  | Accretion |  | Settlements |  | 2017 |
ARO liability total |  | $ | 1,861 |  | $ | 317 |  | $ | 7 |  | $ | (247) |  | $ | 1,938 |
|  | Balance at |  |  |  |  |  |  |  |  |  |  | Balance at |
|  | December 31, |  | Additions and |  |  |  |  |  |  |  | December 31, |
|  | 2015 |  | Modifications |  | Accretion |  | Settlements |  | 2016 |
ARO liability total |  | $ | 1,641 |  | $ | 333 |  | $ | 15 |  | $ | (128) |  | $ | 1,861 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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