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Summary of Combined Fair Value of Assets Incurred Impairments (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 USD ($) Vessel | Mar. 31, 2017 USD ($) Vessel
Schedule of Combined Fair Value of Assets that Incurred Impairments [Line Items] |  |  |
Number of vessels impaired in the period | Vessel | [1] | 13 |
Amount of impairment incurred | [2] | $ 6,186 |
Combined fair value of assets incurring impairment |  | $ 28,322 |
Predecessor |  |  |
Schedule of Combined Fair Value of Assets that Incurred Impairments [Line Items] |  |  |
Number of vessels impaired in the period | Vessel | [1] |  | 28
Amount of impairment incurred | [2] |  | $ 64,857
Combined fair value of assets incurring impairment |  |  | $ 206,450
[1] | For the quarter ended March 31, 2018, there were 13 stacked vessels impaired, and for the quarter ended March 31, 2017, there were 25 stacked vessels and 3 active vessels impaired.
[2] | Refer to Note (13) for additional information regarding asset impairment charges.

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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