Stock-Based Compensation, Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Compensation Expense [Abstract]
Stock-based compensation expense	$ 6.6	$ 5.7	$ 6.3
Stock Options [Member]
Compensation Expense [Abstract]
Stock-based compensation expense	1.2	1.1	0.9
Fair value of awards vesting	1.0	$ 0.9	$ 1.3
Unrecognized compensation costs	$ 2.3
Weighted average period recognized	2 years 1 month 6 days
Assumptions for Stock Awards Granted [Abstract]
Fair value of options (in dollars per share)	$ 6.99	$ 8.79	$ 3.46
Expected life of awards in years	6 years	6 years 1 month 6 days	6 years 1 month 6 days
Risk-free interest rate	3.00%	1.10%	0.40%
Expected volatility of the Company's stock	57.80%	56.50%	54.10%
Expected dividend yield on the Company's stock	0.00%	0.00%	0.00%
Award vesting period	3 years	4 years
Stock Options Activity [Rollforward]
Outstanding, beginning of year (in shares)	1.0
Granted (in shares)	0.2
Exercised (in shares)	(0.2)
Forfeited or expired (in shares)	(0.1)
Outstanding, end of year (in shares)	0.9	1.0
Exercisable, end of year (in shares)	0.4
Weighted Average Exercise Price [Rollforward]
Outstanding, beginning of year (in dollars per share)	$ 12.12
Granted (in dollars per share)	12.4
Exercised (in dollars per share)	11.77
Forfeited or expired (in dollars per share)	12.26
Outstanding, end of year (in dollars per share)	12.28	$ 12.12
Exercisable, end of year (in dollars per share)	$ 12.46
Weighted-Average Remaining Contractual Term [Abstract]
Weighted average remaining contractual term, outstanding at end of year	7 years 1 month 6 days
Weighted average remaining contractual term, exercisable at end of year	5 years 6 months
Aggregate Intrinsic Value [Abstract]
Aggregate intrinsic value, outstanding at end of year	$ 9.6
Aggregate intrinsic value, exercisable at end of year	4.3
Additional Information Related to Stock Options Exercised [Abstract]
Intrinsic value of stock options exercised	1.5	$ 0.1	$ 1.4
Proceeds from stock options exercised	$ 2.9	$ 1.4	$ 4.1
Stock Options [Member] \| Maximum [Member]
Assumptions for Stock Awards Granted [Abstract]
Stock option term	10 years
Stock Options [Member] \| Tranche One [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	33.00%	25.00%
Stock Options [Member] \| Tranche Two [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	33.00%	25.00%
Stock Options [Member] \| Tranche Three [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	34.00%	25.00%
Stock Options [Member] \| Tranche Four [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage		25.00%

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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