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v3.23.1

Benefit Plans (Fair value of our pension benefits plan assets) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Other Investments | $ 5,387 | $ 5,383 | $ 5,555
Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 208,357 | 348,320 |
Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Other Defined Benefit Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Insurance Contract | 5,387 | 5,383 |
Trading Securities, Cost | 48,137 | 66,416 |
Cash and Cash Equivalents, Fair Value Disclosure | 338 | 559 |
Other Investments | 10,285 | 14,231 |
Defined Benefit Plan, Plan Assets, Amount | 107,089 | 142,172 | $ 145,452
Debt Securities, Trading | 42,942 | 55,583 |
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Insurance Contract | 0 | 0 |
Cash and Cash Equivalents, Fair Value Disclosure | 338 | 559 |
Other Investments | 0 | 0 |
Defined Benefit Plan, Plan Assets, Amount | 338 | 559 |
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Insurance Contract | 0 | 0 |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Other Investments | 10,285 | 14,231 |
Defined Benefit Plan, Plan Assets, Amount | 10,285 | 14,231 |
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Insurance Contract | 5,387 | 5,383 |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Other Investments | 0 | 0 |
Defined Benefit Plan, Plan Assets, Amount | $ 5,387 | $ 5,383 |

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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