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Income Taxes - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 22, 2017 | Dec. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Income taxes paid |  |  |  |  |  | $ 53,866,000 | $ 28,044,000 | $ 45,332,000
Blended rate |  |  |  |  | 21.00% | 31.55% | 35.00% | 35.00%
Impact of Tax Act |  |  | $ 4,106,000 | $ 77,347,000 | $ (13,483,000) | $ 83,400,000 | $ 0 |
Provisional Transition Tax liability | $ 97,500,000 |  |  |  |  |  |  |
Tax Act - Transition Tax |  |  | 7,800,000 |  | 5,290,000 | 7,800,000 |  |
Tax Act - Transition Tax |  |  | 89,700,000 |  | 55,489,000 | 89,700,000 |  |
Net operating loss carryforwards carried forward indefinitely |  |  |  |  | 102,792,000 |  |  |
Net operating loss carryforwards subject to expiration |  |  |  |  | (66,114,000) |  |  |
Valuation allowance |  |  | 15,255,000 |  | 17,519,000 | 15,255,000 |  |
Income Tax Expense (Benefit) |  | $ (13,483) |  |  | $ (21,584,000) | $ (118,493,000) | $ (54,472,000) |
Effective income tax rates |  |  |  |  |  | 11.90% | 49.70% | 25.60%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent |  |  |  |  | 12.30% | 5.20% | 13.50% |
Income (Loss) from Continuing Operations before Income Taxes, Foreign |  |  |  |  | $ 128,872,000 | $ 163,886,000 | $ 132,259,000 |
Undistributed earnings of foreign subsidiaries |  |  | 1,167,000,000 |  |  | 1,167,000,000 | $ 1,260,000,000 |
Estimated change in unrecognized tax benefit in fiscal 2015 |  |  |  |  | 2,275,000 |  |  |
Tax related interest and penalties |  |  |  |  | $ 75,000 | $ 116,000 |  |
Tax Rate of Swiss Subsidiary |  |  |  |  | 4.00% | 8.00% | 5.00% |
Income tax expense (benefit) |  |  |  |  | $ 13,483,000 |  |  |
Domestic Tax Authority |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Increase (decrease) in tax rate |  |  |  |  | 2.20% |  |  |
Foreign |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
United States federal net operating loss carryforwards |  |  |  |  | $ 168,906,000 |  |  |
Valuation allowance |  |  | 13,730,000 |  | 15,594,000 | $ 13,730,000 |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  |  |  |  | 1,864,000 |  |  |
Income Tax Expense (Benefit) |  |  |  |  | $ 2,876,000 |  |  |
Increase (decrease) in tax rate |  |  |  |  | (0.90%) |  |  |
Federal |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
United States federal net operating loss carryforwards |  |  |  |  | $ 1,438,000 |  |  |
Net operating loss carryforwards subject to expiration |  |  |  |  | 630,000 |  |  |
Valuation allowance |  |  | 630,000 |  | 1,027,000 | 630,000 |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  |  |  |  | 397,000 |  |  |
State |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
United States federal net operating loss carryforwards |  |  |  |  | 33,900,000 |  |  |
Valuation allowance |  |  | $ 895,000 |  | 898,000 | $ 895,000 |  |
Foreign Currency Translation Adjustment And Offset Adjustment To Net Operating Losses | Foreign |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  |  |  |  | 1,012,000 |  |  |
Alpha | Federal |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  |  |  |  | $ 1,027,000 |  |  |

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