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Schedule of Amounts Due to Affiliate (Detail) - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |
Begining balance |  |  |  | $ 99,448
Ending balance |  |  | $ 99,448 | 34,972
Sonatide Marine, Ltd. |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Begining balance |  |  | 123,899 | 99,448
Plus commissions payable to Sonatide |  |  | 3,928 | 5,502
Plus amounts paid by Sonatide on behalf of the company |  |  | 12,044 | 14,778
Less commissions paid to Sonatide |  |  | (5,023) | (13,906)
Less amounts used to offset Due from Sonatide obligations | [1] |  | (33,607) | (78,993)
Other |  |  | (1,793) | 2,518
Ending balance |  | $ 123,899 | 99,448 | $ 29,347
Predecessor | Sonatide Marine, Ltd. |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Begining balance |  | 132,857 | $ 123,899 |
Plus commissions payable to Sonatide |  | 3,330 |  |
Plus amounts paid by Sonatide on behalf of the company |  | 9,458 |  |
Less amounts used to offset Due from Sonatide obligations | [1] | (21,453) |  |
Other |  | (293) |  |
Ending balance |  | $ 123,899 |  |
[1] | We reduced the respective due from affiliates and due to affiliates balances each period through netting transactions based on agreement with the joint venture.

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- Definition Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(12)(b)(3)) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 + Details
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