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Significant Accounting Policies - Additional Information (Detail) | 2 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
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May 21, 2019 $ / shares shares | Mar. 31, 2019 USD ($) | Mar. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2018 USD ($) $ / shares shares | Mar. 31, 2017 USD ($) Customer $ / shares shares | Apr. 18, 2019 shares | Apr. 01, 2019 USD ($) | Mar. 31, 2016 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Impairment losses to property, plant, and equipment |  |  | $ 211,300,000 |  |  |  |  |
Impairment losses to goodwill and intangible asset impairment |  |  | 7,019,000 |  |  |  |  |
Impairment of long-lived and intangible assets |  |  | 220,265,000 | $ 0 | $ 0 |  |  |
Allowance for doubtful accounts |  | $ 9,900,000 | 9,900,000 | 8,600,000 |  |  |  |
Notes receivable, total |  | 3,600,000 | 3,600,000 |  |  |  |  |
Notes receivable, current |  | $ 700,000 | $ 700,000 |  |  |  |  |
Notes receivable interest rate |  | 4.50% | 4.50% |  |  |  |  |
Notes receivable, maturity description |  |  | Remaining unpaid amounts, plus accrued interest, mature in fiscal 2026. |  |  |  |  |
Inventories wrote down |  |  |  |  | 8,492,000 |  |  |
Depreciable assets |  |  | $ 118,200,000 | 109,600,000 | 86,000,000 |  |  |
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% |  |  |  |  |
Reduction of prepaid sand liability |  |  |  |  | 2,000,000 |  |  |
Intangible Assets, Amortization Expense |  |  | $ 4,300,000 | $ 4,400,000 | $ 4,800,000 |  |  |
Amortization expense, expected, for fiscal year 2020 |  | $ 2,200,000 | 2,200,000 |  |  |  |  |
Amortization expense, expected, for fiscal year 2021 |  | 1,700,000 | 1,700,000 |  |  |  |  |
Amortization expense, expected, for fiscal year 2022 |  | 1,700,000 | 1,700,000 |  |  |  |  |
Amortization expense, expected, for fiscal year 2023 |  | 1,700,000 | 1,700,000 |  |  |  |  |
Amortization expense, expected, for fiscal year 2024 |  | 1,700,000 | 1,700,000 |  |  |  |  |
Impairment losses to goodwill, intangible and other asset impairment |  |  | $ 9,000,000 |  |  |  |  |
Repurchase of shares | shares |  |  | 3,309,670 | 627,722 | 788,800 |  |  |
Shares repurchased average price | $ / shares |  |  | $ 82.18 | $ 97.30 | $ 76.08 |  |  |
Cost of Goods Sold |  |  | $ 1,066,673,000 | $ 1,047,764,000 | $ 899,175,000 |  |  |
Accumulated other comprehensive loss |  | 3,316,000 | 3,316,000 | 4,012,000 |  |  |  |
Net of income taxes for accumulated other comprehensive loss |  |  | 1,100,000 |  |  |  |  |
Interest payments |  |  | 28,200,000 | 28,900,000 | 19,000,000 |  |  |
Net payments made for federal and state income taxes |  |  | 40,000,000 | 69,400,000 | 76,100,000 |  |  |
Maintenance and repair expenses |  |  | $ 116,300,000 | $ 107,300,000 | $ 101,500,000 |  |  |
Stock options excluded from computation of diluted earnings per share | shares |  |  | 461,575 | 98,362 | 513,262 |  |  |
Stock options, average exercise price per share | $ / shares |  |  | $ 90.32 | $ 98.75 | $ 80.59 |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Long-term supply agreements maturity year |  |  | 2018 |  |  |  |  |
Revenue from contract with customer collection terms |  |  | 30 days |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Long-term supply agreements maturity year |  |  | 2025 |  |  |  |  |
Revenue from contract with customer collection terms |  |  | 65 days |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Number of additional shares authorized to be repurchased | shares |  |  |  |  |  | 10,000,000 |  |
Outstanding authorization shares | shares |  |  |  |  |  | 10,724,758 |  |
Repurchase of shares | shares | 1,031,110 |  |  |  |  |  |  |
Shares repurchased average price | $ / shares | $ 88.79 |  |  |  |  |  |  |
Stock repurchase remaining number of shares authorized to be repurchased | shares | 9,848,648 |  |  |  |  |  |  |
Subsequent Event [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Operating lease liability |  |  |  |  |  |  | $ 70,000,000 |
Operating lease right-of-use asset |  |  |  |  |  |  | 67,000,000 |
Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Operating lease liability |  |  |  |  |  |  | 75,000,000 |
Operating lease right-of-use asset |  |  |  |  |  |  | $ 72,000,000 |
Sand [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Customer advances |  |  |  |  |  |  |  | $ 2,000,000
Date of contract termination |  |  | Jun. 30, 2016 |  |  |  |  |
Freight [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Cost of Goods Sold |  |  | $ 169,600,000 | $ 158,300,000 | $ 138,000,000 |  |  |
Customer Contracts And Relationships [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible Assets, Net |  | 11,073,000 | 11,073,000 | 13,528,000 |  |  |  |
Oil and Gas Proppants [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Impairment losses to property, plant, and equipment |  |  | 211,300,000 |  |  |  |  |
Impairment of long-lived and intangible assets |  | 220,300,000 |  |  |  |  |  |
Goodwill, impairment loss |  | 6,800,000 |  |  |  |  |  |
Reduction of prepaid sand liability |  |  | 2,000,000 |  |  |  |  |
Number of customers terminated contract | Customer |  |  |  |  | 2 |  |  |
Settlement agreements, amount received |  |  |  |  | $ 12,900,000 |  |  |
Oil and Gas Proppants [Member] | Customer Contracts And Relationships [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible Assets, Net |  | $ 300,000 | $ 300,000 | $ 1,600,000 |  |  |  |
Intangible assets, wrote-off due to termination of contract |  |  |  |  | $ 1,300,000 |  |  |
Oil and Gas Proppants [Member] | Discount Rate [Member] | Discounted Cash Flow Model [Member] |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Estimated discount rate for goodwill impairment |  | 11.00% | 11.00% |  |  |  |  |

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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2611-110228 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 + Details
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093879-108312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093883-108312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66092785&loc=d3e4542-108314 + Details
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- Definition The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 + Details
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