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Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | May 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017
--- | --- | --- | --- | ---
Accounts Payable and Accrued Liabilities Current |  |  |  |  |
Payroll and related payables | [1] | $ 9,004 |  | $ 17,344 |
Commissions payable | [2] | 2,488 |  | 1,898 |
Accrued vessel expenses |  | 28,701 |  | 27,222 |
Accrued interest expense |  | 5,958 |  | 6,036 |
Other accrued expenses |  | 3,161 |  | 2,306 |
Accrued expenses |  | 49,312 |  | 54,806 |
Predecessor |  |  |  |  |
Accounts Payable and Accrued Liabilities Current |  |  |  |  |
Payroll and related payables |  |  |  |  | $ 10,465
Commissions payable |  |  |  |  | 2,143
Accrued vessel expenses |  |  |  |  | 41,580
Accrued interest expense |  |  |  |  | 15,021
Other accrued expenses |  |  |  |  | 8,912
Accrued expenses |  |  |  |  | 78,121
Sonatide joint venture |  |  |  |  |
Accounts Payable and Accrued Liabilities Current |  |  |  |  |
Commissions payable |  | $ 30,200 |  | 36,400 |
Accrued interest expense |  |  |  | 36,400 |
Sonatide joint venture | Predecessor |  |  |  |  |
Accounts Payable and Accrued Liabilities Current |  |  |  |  |
Accrued interest expense |  |  |  |  | $ 34,700
Former CEO |  |  |  |  |
Accounts Payable and Accrued Liabilities Current |  |  |  |  |
Payroll and related payables |  |  | $ 8,900 |  |
Commissions payable |  |  |  | $ 9,600 |
[1] | The balance at December 31, 2017 includes $8.9 million payable to the former CEO, which was paid in May 2018.
[2] | Excludes $30.2 million and $36.4 million of commissions due to Sonatide at June 30, 2018 and December 31, 2017, respectively. These amounts are included in amounts due to affiliates.

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