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, 2020	$ 33.3	$ 245.1	$ 469.9	$ (223.3)	$ (37.1)	$ 5.7	$ 493.6
Balance (in shares) at Mar. 31, 2020	53.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	(8.6)	0.0	0.0	0.2	(8.4)
Other comprehensive income	0.0	0.0	0.0	7.5	0.0	0.1	7.6
Stock options and awards	$ 0.2	(0.2)	0.0	0.0	0.0	0.0	0.0
Stock options and awards (in shares)	0.3
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(0.8)	0.0	(0.8)
Stock-based compensation expense	0.0	0.7	0.0	0.0	0.0	0.0	0.7
Balance at Jun. 30, 2020	$ 33.5	245.6	461.3	(215.8)	(37.9)	6.0	492.7
Balance (in shares) at Jun. 30, 2020	53.7
Balance at Mar. 31, 2021	$ 33.9	255.0	259.2	(161.2)	(38.2)	7.4	$ 356.1
Balance (in shares) at Mar. 31, 2021	54.3						54.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	2.3	0.0	0.0	0.5	$ 2.8
Other comprehensive income	0.0	0.0	0.0	8.0	0.0	0.2	8.2
Stock options and awards	$ 0.1	0.7	0.0	0.0	0.0	0.0	0.8
Stock options and awards (in shares)	0.2
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.0)	0.0	(1.0)
Stock-based compensation expense	0.0	1.2	0.0	0.0	0.0	0.0	1.2
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.9)	(0.9)
Balance at Jun. 30, 2021	$ 34.0	$ 256.9	$ 261.5	$ (153.2)	$ (39.2)	$ 7.2	$ 367.2
Balance (in shares) at Jun. 30, 2021	54.5						54.5