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Fair Value Measurements (Narratives) (Details) - USD ($) | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Indefinite-lived trademark | $ 46,670,000 | $ 46,981,000
Measurement Input, Long-term Revenue Growth Rate [Member] | Rest of Products [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.0191 |
Measurement Input, Long-term Revenue Growth Rate [Member] | Duff Norton Group [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.0568 |
Measurement Input, Cap Rate [Member] | Rest of Products [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.030 |
Measurement Input, Cap Rate [Member] | Duff Norton Group [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.035 |
Measurement Input, Discount Rate [Member] | Rest of Products [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.117 |
Measurement Input, Discount Rate [Member] | Duff Norton Group [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, Fair Value Disclosure | 0.122 |
Variable Annuity [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Other Assets, Fair Value Disclosure | 2,059,000 | 2,285,000
Variable Annuity [Member] | (Level 3) |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Other Assets, Fair Value Disclosure | 0 | 0
Variable Annuity [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Other Assets, Fair Value Disclosure | 0 | 0
Variable Annuity [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Other Assets, Fair Value Disclosure | $ 2,059,000 | $ 2,285,000

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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 Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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