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v3.21.1

Stock-Based Compensation, Restricted Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Compensation Expense [Abstract] |  |  |
Stock-based compensation expense | $ 6.3 | $ 6.6 | $ 7.9
Restricted Stock [Member] |  |  |
Restricted Stock Activity [Roll Forward] |  |  |
Non-vested balance, beginning (in shares) | 0.5 |  |
Granted (in shares) | 0.8 |  |
Vested (in shares) | (0.5) |  |
Forfeited (in shares) | (0.1) |  |
Non-vested balance, ending (in shares) | 0.7 | 0.5 |
Weighted Average Price [Rollforward] |  |  |
Non-vested balance, beginning (in dollars per share) | $ 14.48 |  |
Granted (in dollars per share) | 7.53 |  |
Vested (in dollars per share) | 9.64 |  |
Forfeited (in dollars per share) | 13.40 |  |
Non-vested balance, ending (in dollars per share) | $ 10.05 | $ 14.48 |
Compensation Expense [Abstract] |  |  |
Stock-based compensation expense | $ 4.3 | $ 4.5 | 4.3
Fair value of awards vesting | 4.5 | 4.4 | 4.3
Unrecognized compensation costs | $ 6.1 |  |
Weighted average period recognized | 2 years 8 months 12 days |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Award vesting period | 4 years |  |
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 | $ 1.1 | $ 0.8 | $ 2.4
Unrecognized compensation costs | $ 0.5 |  |
Weighted average period recognized | 1 year |  |
Assumptions for Stock Awards Granted [Abstract] |  |  |
Award vesting period | 3 years |  |
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 |  |

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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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