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Employee Retirement Plans (Narrative) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined contribution plan, minimum annual contributions per participating employee (as percent) |  |  | 1.00% |  |
Defined contribution plan, maximum annual contributions per employee (as percent) |  |  | 70.00% |  |
Defined contribution plan, cost recognized |  |  | $ 2,000 | $ 1,900 | $ 1,700
Lump sum settlement of terminated plan |  | $ 13,800 |  |  |
Payment for settlement, purchase of annuity contract |  | 31,100 |  |  |
Settlement gain (loss) |  | $ (400) |  |  |
Projected benefit obligations |  |  | $ 3,381 | $ 3,646 | $ 51,507
Expected return on plan assets, net of administrative fees (as percent) | 2.75% |  | 0.00% | 2.75% | 2.25%
Contribution Tranche One |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined contribution plan, employer matching contribution, percent of match (as percent) |  |  | 100.00% |  |
Defined contribution plan, employer matching contribution, percent of employees pay (as percent) |  |  | 3.00% |  |
Contribution Tranche Two |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined contribution plan, employer matching contribution, percent of match (as percent) |  |  | 50.00% |  |
Defined contribution plan, employer matching contribution, percent of employees pay (as percent) |  |  | 3.00% |  |

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- Definition Defined Benefit Plan, Plan Assets, Payment For Settlement, Lump Sum + References No definition available. + Details
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- Definition Defined Benefit Plan, Plan Assets, Payment For Settlement, Purchase Of Annuity Contract + References No definition available. + Details
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- Definition Defined Contribution Plan, Minimum Annual Contributions Per Participating Employee, Percent + References No definition available. + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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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. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- Definition Amount, before tax, of increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 15 -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-15 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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