CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, at Cost [Member]	Non-controlling Interest [Member]	Total
Balance at Mar. 31, 2022	$ 34.2	$ 261.6	$ 344.4	$ (149.5)	$ (40.0)	$ 7.4	$ 458.1
Balance (in shares) at Mar. 31, 2022	54.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 0.0	0.0	14.3	0.0	0.0	0.0	14.3
Other comprehensive loss	0.0	0.0	0.0	(23.8)	0.0	(0.4)	(24.2)
Stock options and awards	$ 0.1	0.0	0.0	0.0	0.0	0.0	0.1
Stock options and awards (in shares)	0.1
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.7)	0.0	(1.7)
Stock-based compensation expense	0.0	1.1	0.0	0.0	0.0	0.0	1.1
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.6)	(0.6)
Balance at Jun. 30, 2022	$ 34.3	262.7	358.7	(173.3)	(41.7)	6.4	447.1
Balance (in shares) at Jun. 30, 2022	54.9
Balance at Mar. 31, 2023	$ 34.6	270.8	497.5	(161.1)	(49.0)	6.8	$ 599.6
Balance (in shares) at Mar. 31, 2023	55.4						55.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 0.0	0.0	44.8	0.0	0.0	0.5	$ 45.3
Other comprehensive loss	0.0	0.0	0.0	(0.5)	0.0	(0.2)	(0.7)
Stock options and awards	$ 0.1	0.4	0.0	0.0	0.0	0.0	0.5
Stock options and awards (in shares)	0.2
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.2)	0.0	(1.2)
Stock-based compensation expense	0.0	1.5	0.0	0.0	0.0	0.0	1.5
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.5)	(0.5)
Balance at Jun. 30, 2023	$ 34.7	$ 272.7	$ 542.3	$ (161.6)	$ (50.2)	$ 6.6	$ 644.5
Balance (in shares) at Jun. 30, 2023	55.6						55.6