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Vessel Operating Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating Expenses [Abstract] |  |  |
Crew wages and related costs | $ 33,340 | $ 30,948 | $ 29,581
Insurance | 3,163 | 3,148 | 3,452
Repairs, maintenance and drydocking costs | 6,606 | 3,729 | 2,752
Spares, stores and provisions | 13,855 | 9,345 | 7,015
Lubricants | 3,901 | 3,220 | 3,754
Taxes | 842 | 941 | 1,347
Miscellaneous | 1,805 | 1,463 | 1,618
Total | $ 63,512 | $ 52,794 | $ 49,519

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- Definition Lubricant costs incurred that are directly related to goods produced and sold and services rendered during the reporting period. + References No definition available. + Details
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- Definition The aggregate costs of keeping the property in good condition including the repairs, maintenance and drydocking costs. + References No definition available. + Details
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- Definition Payroll costs incurred (including equity-based compensation) that are directly related to services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Costs of maintenance supplies used that are directly related to goods produced and sold, or services rendered, during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Taxes and licenses incurred and are directly related to goods produced and sold and services rendered during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Insurance and claims costs directly related to goods produced and sold, or services rendered, during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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