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Stock-Based Compensation, Restricted Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Compensation Expense [Abstract] |  |  |
Stock-based compensation expense (benefit) | $ 5.7 | $ 6.3 | $ 6.6
Restricted Stock [Member] |  |  |
Compensation Expense [Abstract] |  |  |
Stock-based compensation expense (benefit) | 5.0 | 4.3 | 4.5
Fair value of awards vesting | 4.4 | $ 4.5 | 4.4
Unrecognized compensation costs | $ 6.0 |  |
Weighted average period recognized | 2 years 4 months 24 days |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Award vesting period | 4 years |  |
Restricted Stock Activity [Roll Forward] |  |  |
Non-vested balance, beginning of year (in shares) | 0.7 |  |
Granted (in shares) | 0.4 |  |
Vested (in shares) | (0.3) |  |
Forfeited (in shares) | (0.1) |  |
Non-vested balance, end of year (in shares) | 0.7 | 0.7 |
Weighted Average Price [Rollforward] |  |  |
Non-vested balance, beginning of year (in dollars per share) | $ 10.05 |  |
Granted (in dollars per share) | 15.13 |  |
Vested (in dollars per share) | 12.05 |  |
Forfeited (in dollars per share) | 12.44 |  |
Non-vested balance, end of year (in dollars per share) | $ 11.61 | $ 10.05 |
Restricted Stock [Member] | Tranche One [Member] |  |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Annual vesting percentage | 25.00% |  |
Restricted Stock [Member] | Tranche Two [Member] |  |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Annual vesting percentage | 25.00% |  |
Restricted Stock [Member] | Tranche Three [Member] |  |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Annual vesting percentage | 25.00% |  |
Restricted Stock [Member] | Tranche Four [Member] |  |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Annual vesting percentage | 25.00% |  |
Performance Stock Awards [Member] |  |  |
Compensation Expense [Abstract] |  |  |
Stock-based compensation expense (benefit) | $ (0.4) | $ 1.1 | $ 0.8
Unrecognized compensation costs | $ 0.0 |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Award vesting period | 3 years |  |
Weighted Average Price [Rollforward] |  |  |
Performance period | 3 years |  |
Period of time to average cash flow return on invested capital | 3 years |  |
Period of time to average revenue growth | 3 years |  |
Period of time to average EBITDA growth | 3 years |  |

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- Definition The period of time revenue growth is averaged as a performance metric for cash awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The period of time performance is measured for cash awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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