Basis of Presentation and Accounting Policy Information - Correction of an Error (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Mar. 31, 2021 |
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| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||
| Accrued liabilities | $ 23,589 | $ 22,048 | $ 23,888 | $ 23,589 | $ 23,888 | ||
| Income taxes payable | 254 | ||||||
| Deferred income taxes | 19,404 | 21,798 | 21,006 | 19,404 | 21,006 | ||
| Retained earnings | 183,574 | 183,095 | 183,436 | 183,574 | 183,436 | ||
| Sales | 71,155 | 73,323 | 276,181 | ||||
| Cost of sales | 49,601 | 44,617 | 46,461 | $ 37,475 | 94,218 | $ 70,204 | 159,309 |
| Gross profit | $ 31,721 | 26,538 | 26,862 | $ 28,931 | $ 58,259 | $ 53,050 | 116,872 |
| Net income/(loss) | $ (340) | $ (1,051) | $ 877 | ||||
| Basic (in dollars per share) | $ 0.01 | $ (10.00) | $ (30.00) | $ 0.06 | $ 0.00 | $ (0.13) | $ 30.00 |
| Diluted (in dollars per share) | $ 0.01 | $ (10.00) | $ (30.00) | $ 0.06 | $ 0.00 | $ (0.13) | $ 30.00 |
| as reported | |||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||
| Accrued liabilities | $ 20,046 | $ 23,517 | $ 23,517 | ||||
| Income taxes payable | 678 | ||||||
| Deferred income taxes | 21,880 | 21,088 | 21,088 | ||||
| Retained earnings | 184,591 | 183,725 | 183,725 | ||||
| Sales | 71,155 | 73,323 | 276,181 | ||||
| Cost of sales | 42,986 | 46,090 | 158,938 | ||||
| Gross profit | 28,169 | 27,233 | 117,243 | ||||
| Net income/(loss) | $ 867 | $ (763) | $ 1,165 | ||||
| Basic (in dollars per share) | $ 30.00 | $ (20.00) | $ 40.00 | ||||
| Diluted (in dollars per share) | $ 30.00 | $ (20.00) | $ 30.00 | ||||
| Adjustments | |||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||
| Accrued liabilities | $ 2,002 | $ 371 | $ 371 | ||||
| Income taxes payable | (424) | ||||||
| Deferred income taxes | (82) | (82) | (82) | ||||
| Retained earnings | (1,496) | (289) | (289) | ||||
| Sales | 0 | 0 | 0 | ||||
| Cost of sales | 1,631 | 371 | 371 | ||||
| Gross profit | (1,631) | (371) | (371) | ||||
| Net income/(loss) | $ (1,207) | $ (288) | $ (288) | ||||
| Basic (in dollars per share) | $ (40.00) | $ (10.00) | $ (10.00) | ||||
| Diluted (in dollars per share) | $ (40.00) | $ (10.00) | $ 0.00 | ||||
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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