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PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS
Fuel oil and diesel oil inventory	$ 8,464	$ 1,564
Lubricant inventory and other stores	7,511	8,070
Prepaid items	1,452	2,552
Insurance receivable	3,498	1,030
Other	1,746	2,534
Total prepaid expenses and other current assets	22,671	15,750
Security deposit related to operating lease included in other noncurrent assets	$ 514	$ 514

X

- Definition

The amount of fuel oil and diesel oil inventory.

+ References

No definition available.

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- Definition

The amount of lubricant inventory and other stores.

+ References

No definition available.

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- References

No definition available.

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- Definition

Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
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- Definition

Amount of current assets classified as other.

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-Name Accounting Standards Codification
-Topic 210
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- Definition

Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (g)
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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
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