v3.8.0.1

COMMITMENTS AND CONTINGENCIES | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
COMMITMENTS AND CONTINGENCIES | COMMITMENTS AND CONTINGENCIES Contingencies We have contingent liabilities resulting from various litigation, claims and commitments. We record accruals for loss contingencies when losses are considered probable and can be reasonably estimated. Legal fees associated with defending the Partnership in legal matters are expensed as incurred. We accrued $7.3 million for contingent losses as of December 31, 2017, and had no accrual for contingent losses as of December 31, 2016. The amount that will ultimately be paid related to such matters may differ from the recorded accruals, and the timing of such payments is uncertain. In addition, due to the inherent uncertainty of litigation, there can be no assurance that the resolution of any particular claim or proceeding would not have a material adverse effect on our results of operations, financial position or liquidity. Commitments Lessee Commitments. Future minimum rental payments applicable to all noncancellable operating leases and purchase obligations as of December 31, 2017 are as follows:
| Payments Due by Period
| 2018 |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | There- after |  | Total
| (Thousands of Dollars)
Operating leases | $ | 39,236 |  |  | $ | 34,203 |  |  | $ | 19,541 |  |  | $ | 13,324 |  |  | $ | 7,295 |  |  | $ | 68,386 |  |  | $ | 181,985 |
Purchase obligations | $ | 6,963 |  |  | $ | 6,133 |  |  | $ | 4,686 |  |  | $ | 4,690 |  |  | $ | 4,480 |  |  | $ | 300 |  |  | $ | 27,252 |
Rental expense for all operating leases totaled $36.2 million, $37.0 million and $39.7 million for the years ended December 31, 2017, 2016 and 2015, respectively. Our operating leases consist primarily of the following:
• | a ten-year lease for tugs and barges utilized at our St. Eustatius facility for bunker fuel sales, with two five-year renewal options; and
• | land leases at various terminal facilities, with original terms ranging from 10 to 100 years.
Our purchase obligations primarily consist of an eleven-year chemical supply agreement related to our pipelines. Lessor Revenues. We have entered into certain revenue arrangements where we are considered to be the lessor in accordance with GAAP. Under these arrangements we lease certain of our storage tanks in exchange for a fixed fee, subject to an annual consumer price index adjustment. The arrangements commenced on January 1, 2017, and have initial terms of ten years with successive ten-year automatic renewal terms. We recognized $39.1 million of lease revenues from these leases for the year ended December 31, 2017, which is included in “Service revenues” in the consolidated statements of income. Future minimum revenues we expect to receive under these lease arrangements as of December 31, 2017 total $352.2 million, which we will recognize ratably over the following nine years. As of December 31, 2017, the cost and accumulated depreciation of leased storage assets totaled $229.8 million and $104.9 million, respectively.

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- Definition The entire disclosure for commitments and contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -URI http://asc.fasb.org/topic&trid=2127136 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -URI http://asc.fasb.org/topic&trid=2144648 + Details
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