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Goodwill and Intangible Assets (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) Reporting_Unit | Jun. 30, 2018 USD ($) | Mar. 31, 2020 | Mar. 31, 2019 USD ($)
Goodwill [Line Items] |  |  |  |
Number of Reporting Units | Reporting_Unit | 2 |  |  |
Amortization of intangibles | $ 3,253,000 | $ 3,903,000 |  |
Goodwill | 325,301,000 |  |  | $ 322,816,000
Estimated amortization expense in 2019 | 13,000,000 |  |  |
Estimated amortization expense in 2020 | 13,000,000 |  |  |
Estimated amortization expense in 2021 | 13,000,000 |  |  |
Estimated amortization expense in 2022 | 13,000,000 |  |  |
Indefinite-Lived Trademarks | 47,239,000 |  |  | 46,981,000
Goodwill, Impaired, Accumulated Impairment Loss | 113,174,000 |  |  | 113,174,000
Rest of Products [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | 315,675,000 |  |  | 313,205,000
Duff Norton Group [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | $ 9,626,000 |  |  | $ 9,611,000
Scenario, Forecast [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 18 years |
Scenario, Forecast [Member] | Trademark |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 14 years |
Scenario, Forecast [Member] | Customer relationships |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 18 years |
Scenario, Forecast [Member] | Patented Technology [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 18 years |
Scenario, Forecast [Member] | Other Intangible Assets [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 6 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + 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 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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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