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Schedule of Tax Rate Applicable to Pre-Tax Earning, U.S. Federal Statutory Rate (Detail) - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018 | Mar. 31, 2017
Reconciliation Of Statutory Federal Tax Rate [Line Items] |  |  |  |  |
Computed “expected” tax benefit |  | $ (12,840) |  | $ (32,239) |
Foreign income taxed at different rates |  | 1,767 |  | 20,917 |
Uncertain tax positions |  | (3,219) |  | 2,264 |
Nondeductible transaction costs |  |  |  | 1,091 |
Transition tax |  | 15,120 |  |  |
Valuation allowance – deferred tax assets |  | (28,387) |  | 38,778 |
Amortization of deferrals associated with intercompany sales to foreign tax jurisdictions |  | 11 |  |  |
Foreign taxes |  | 845 |  | 13,012 |
State taxes |  |  |  | 246 |
Return to accrual |  | 835 |  | (28,176) |
162(m) - Executive compensation |  |  |  | 2,818 |
Other, net |  | 646 |  | (459) |
Remeasurement of deferred taxes |  | 27,261 |  |  |
Income tax expense (benefit), Total |  | $ 2,039 |  | $ 18,252 |
Predecessor |  |  |  |  |
Reconciliation Of Statutory Federal Tax Rate [Line Items] |  |  |  |  |
Computed “expected” tax benefit | $ (576,850) |  |  |  |
Foreign income taxed at different rates | 448,805 |  |  |  |
Uncertain tax positions | 4,674 |  |  |  |
Chapter 11 reorganization | 50,428 |  |  |  |
Nondeductible transaction costs | 2,628 |  |  |  |
Valuation allowance – deferred tax assets | 69,278 |  |  |  |
Amortization of deferrals associated with intercompany sales to foreign tax jurisdictions | (822) |  |  |  |
Foreign taxes | (1,342) |  |  |  |
State taxes | 3 |  |  |  |
Return to accrual | 668 |  |  |  |
Other, net | 1,296 |  |  |  |
Income tax expense (benefit), Total | $ (1,234) |  | $ 4,680 |  | $ 6,397

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