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Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 28, 2023 | Sep. 18, 2020 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | May 17, 2022
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Purchase price of separate operating segment |  |  | $ 158,451 | $ 0 | $ 0 |
Gain on Sale of Businesses |  |  | 0 | 0 | 51,973 |
Allowance for doubtful accounts |  |  | 6,900 | 6,700 |  |
Bad debt expense |  |  | 300 | 300 | 700 |
Write-offs of accounts receivable |  |  | 100 | 1,600 | 1,200 |
Notes receivable, total |  |  | 8,500 |  |  |
Notes receivable, current |  |  | 1,100 |  |  |
Proceeds from collection of notes receivable | $ 8,500 |  |  |  |  |
Depreciable assets |  |  | $ 129,600 | $ 122,400 | 120,700 |
Basis of valuation |  |  | Property, Plant, and Equipment are stated at cost. |  |  |
Depreciation method |  |  | straight-line basis over the estimated useful lives |  |  |
Goodwill impairment more likely than not a likelihood as greater percentage of fair value of reportable unit exceeds its carrying value |  |  |  | 50.00% |  |
Intangible Assets, Amortization Expense |  |  | $ 6,800 | $ 4,400 | 4,500 |
Amortization expense, expected, for fiscal year 2024 |  |  | 6,800 |  |  |
Amortization expense, expected, for fiscal year 2025 |  |  | 6,600 |  |  |
Amortization expense, expected, for fiscal year 2026 |  |  | 6,600 |  |  |
Amortization expense, expected, for fiscal year 2027 |  |  | 6,400 |  |  |
Amortization expense, expected, for fiscal year 2028 |  |  | $ 6,300 |  |  |
Number of additional shares authorized to be repurchased |  |  |  |  |  | 7,500,000
Repurchase of shares |  |  | 3,075,788 | 3,982,657 |  |
Shares repurchased average price |  |  | $ 126.05 | $ 148.08 |  |
Stock repurchase remaining number of shares authorized to be repurchased |  |  | 7,747,204 |  |  |
Freight expense |  |  | $ 1,508,803 | $ 1,341,908 | 1,214,287 |
Accumulated other comprehensive loss |  |  | 3,547 | 3,175 |  |
Net of income taxes for accumulated other comprehensive loss |  |  | 1,000 |  |  |
Maintenance and repair expenses |  |  | $ 173,400 | $ 147,800 | $ 137,200 |
Stock options excluded from computation of diluted earnings per share |  |  | 52,375 | 6,053 | 569,431 |
Stock options, average exercise price per share |  |  | $ 127.06 | $ 139.80 | $ 89.11 |
Freight [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Freight expense |  |  | $ 229,600 | $ 199,100 | $ 177,500 |
Minimum [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Long term supply agreements term of termination notice period |  |  | 2 years |  |  |
Revenue from contract with customer collection terms |  |  | 30 days |  |  |
Maximum [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Long term supply agreements term of termination notice period |  |  | 3 years |  |  |
Revenue from contract with customer collection terms |  |  | 75 days |  |  |
Oil and Gas Proppants [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Purchase price of separate operating segment |  | $ 2,000 |  |  |  |
Discontinued Operations, Disposed of by Sale | Oil and Gas Proppants [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Gain on Sale of Businesses |  | $ 9,200 |  |  |  |

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