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Income Taxes - Reconciliation of Benefit from (Provision for) Income Taxes to Amount Computed by Applying Statutory Federal Income Tax Rate to (Loss) Income before Income Taxes (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Provision Benefit For Income Taxes [Line Items] |  |  |
Tax benefit (provision) at federal statutory rate | $ 23,201 | $ 22,149 | $ (8,885)
State tax benefit (provision), net of federal benefit | 1,815 | 2,605 | (1,681)
Tax credits, net of valuation allowance | 26,836 | 21,898 | 15,121
Non-deductible compensation | (4,527) | (2,852) | (2,659)
Non-deductible transaction costs | (70) |  | (645)
Non-deductible meals and entertainment | (929) | (727) | (794)
Stock-based compensation | 180 | 799 | (886)
Foreign effective tax rate differential, net of valuation allowance | (1,552) | (2,054) | (2,391)
Unremitted subsidiary gains | (1,388) | (864) | 162
Other | (1,868) | (167) | (542)
Total benefit from (provision for) income taxes | 41,014 | 35,217 | (3,617)
Federal [Member] |  |  |
Provision Benefit For Income Taxes [Line Items] |  |  |
Change in effective tax rate |  | (5,335) |
State [Member] |  |  |
Provision Benefit For Income Taxes [Line Items] |  |  |
Change in effective tax rate | $ (684) | $ (235) | $ (417)

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 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(h)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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