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Schedule of Amounts Due from Affiliate (Detail) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 5 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2018 | Jul. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Begining balance |  |  |  |  | $ 132,951 |
Less impairment of due from affiliate |  | $ (20,083) |  |  |  | $ (20,083)
Ending balance |  | 132,951 |  |  | 125,972 | 132,951
Sonatide Marine, Ltd. |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Begining balance |  |  | $ 262,652 | $ 252,393 | 109,176 | 230,315
Revenue earned by the company through Sonatide |  |  | 34,397 | 40,303 | 52,372 | 56,916
Less amounts received from Sonatide |  |  | (21,019) | (28,264) | (60,486) | (76,878)
Less amounts used to offset Due to Sonatide obligations | [1] |  | (21,453) | (33,607) | (10,551) | (78,993)
Less impairment of due from affiliate |  |  |  |  |  | (20,083)
Other |  |  | (2,184) | (510) | (1,265) | (2,101)
Ending balance |  | $ 109,176 | $ 252,393 | $ 230,315 | $ 89,246 | $ 109,176
[1] |
| (A) | 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 receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due within 1 year (or 1 business cycle). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864 Reference 2: 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)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6918054&loc=d3e56071-112765 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 6: 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 + Details
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