Stock-Based Compensation, Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Compensation Expense [Abstract]
Stock-based compensation expense	$ 5.7	$ 6.3	$ 6.6
Stock Options [Member]
Compensation Expense [Abstract]
Stock-based compensation expense	1.1	0.9	1.3
Fair value of awards vesting	0.9	$ 1.3	$ 1.2
Unrecognized compensation costs	$ 2.0
Weighted average period recognized	2 years 8 months 12 days
Assumptions for Stock Awards Granted [Abstract]
Fair value of options (in dollars per share)	$ 8.79	$ 3.46	$ 5.56
Expected life of awards in years	6 years 1 month 6 days	6 years 1 month 6 days	6 years 3 months 18 days
Risk-free interest rate	1.10%	0.40%	2.20%
Expected volatility of the Company's stock	56.50%	54.10%	39.20%
Expected dividend yield on the Company's stock	0.00%	0.00%	0.00%
Award vesting period	4 years
Stock Options Activity [Rollforward]
Outstanding, beginning of year (in shares)	1.1
Granted (in shares)	0.2
Exercised (in shares)	(0.1)
Forfeited or expired (in shares)	(0.2)
Outstanding, end of year (in shares)	1.0	1.1
Exercisable, ending (in shares)	0.5
Weighted Average Exercise Price [Rollforward]
Outstanding, beginning of year (in dollars per share)	$ 11.63
Granted (in dollars per share)	16.64
Exercised (in dollars per share)	13.72
Forfeited or expired (in dollars per share)	13.51
Outstanding, end of year (in dollars per share)	12.12	$ 11.63
Exercisable, ending (in dollars per share)	$ 12.47
Summary of Stock Option Activity [Abstract]
Options, Outstanding, Weighted average remaining contractual term	6 years 9 months 18 days
Options, Outstanding, Aggregate intrinsic value	$ 0.7
Options, Exercisable, Weighted average remaining contractual term	5 years 1 month 6 days
Options, Exercisable, Aggregate intrinsic value	$ 0.2
Additional Information Related to Stock Options Exercised [Abstract]
Intrinsic value of stock options exercised	0.1	$ 1.4	$ 0.1
Proceeds from stock options exercised	$ 1.4	$ 4.1	$ 0.1
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	25.00%
Stock Options [Member] \| Tranche Two [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	25.00%
Stock Options [Member] \| Tranche Three [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	25.00%
Stock Options [Member] \| Tranche Four [Member]
Assumptions for Stock Awards Granted [Abstract]
Annual vesting percentage	25.00%

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