Consolidated Statements of Equity and Mezzanine Equity - USD ($) $ in Millions	Total	Common Shares	APIC	AOCI, Net of Tax	Retained Earnings	Total	NCI	Redeemable NCI
Balance at May. 31, 2024	$ 1,117.5	$ 0.0	$ 905.3	$ (6.1)	$ 86.1	$ 985.3	$ 132.2
Balance (in shares) at May. 31, 2024		49,331,514
Net earnings (loss)	32.2				28.4	28.4	3.8
Other comprehensive income (loss)	2.2			2.2		2.2
Common shares issued, net of withholding tax	(1.6)		(1.6)			(1.6)
Common shares issued, net of withholding tax (in shares)		93,217
Stock-based compensation	3.0		3.0			3.0
Dividends to noncontrolling interests	(1.9)						(1.9)
Cash dividends declared ($0.16) per common share	(8.2)				(8.2)	(8.2)
Balance at Aug. 31, 2024	1,143.2	$ 0.0	906.7	(3.9)	106.3	1,009.1	134.1
Balance (in shares) at Aug. 31, 2024		49,424,731
Balance at May. 31, 2024	1,117.5	$ 0.0	905.3	(6.1)	86.1	985.3	132.2
Balance (in shares) at May. 31, 2024		49,331,514
Net earnings (loss)	60.4
Other comprehensive income (loss)	(9.3)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	5.4
Balance at Feb. 28, 2025	1,143.1	$ 0.0	911.2	(15.4)	116.5	1,012.3	130.8
Balance (in shares) at Feb. 28, 2025		49,535,449
Balance at Aug. 31, 2024	1,143.2	$ 0.0	906.7	(3.9)	106.3	1,009.1	134.1
Balance (in shares) at Aug. 31, 2024		49,424,731
Net earnings (loss)	16.1				12.8	12.8	3.3
Other comprehensive income (loss)	(5.9)			(5.9)		(5.9)
Common shares issued, net of withholding tax	(0.1)		(0.1)			(0.1)
Common shares issued, net of withholding tax (in shares)		58,251
Theoretical Common Shares in Non-Qualified Deferred Compensation Plans	0.1		0.1			0.1
Stock-based compensation	2.9		2.9			2.9
Dividends to noncontrolling interests	(3.1)						(3.1)
Cash dividends declared ($0.16) per common share	(8.1)				(8.1)	(8.1)
Balance at Nov. 30, 2024	1,145.1	$ 0.0	909.6	(9.8)	111.0	1,010.8	134.3
Balance (in shares) at Nov. 30, 2024		49,482,982
Net earnings (loss)	12.1				13.8	13.8	(1.7)
Other comprehensive income (loss)	(5.6)			(5.6)		(5.6)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(1.7)
Common shares issued, net of withholding tax	(1.2)		(1.2)			(1.2)
Common shares issued, net of withholding tax (in shares)		52,467
Stock-based compensation	2.8		2.8			2.8
Dividends to noncontrolling interests	(1.8)						(1.8)
Cash dividends declared ($0.16) per common share	(8.3)				(8.3)	(8.3)
Balance at Feb. 28, 2025	1,143.1	$ 0.0	911.2	(15.4)	116.5	1,012.3	130.8
Balance (in shares) at Feb. 28, 2025		49,535,449
Balance at May. 31, 2025	1,197.9	$ 0.0	913.9	(4.0)	164.2	1,074.1	123.8
Balance (in shares) at May. 31, 2025		49,548,895
Mezzanine Equity, Balance at May. 31, 2025	0.0							$ 0.0
Acquisition (Note 2)								99.2
Contribution of Tempel Nagold (Note 2)	(0.7)		(0.7)			(0.7)		0.7
Net earnings (loss)	41.3				36.8	36.8	4.5
Net earnings (loss)								(2.7)
Other comprehensive income (loss)	0.6			0.6		0.6
Foreign currency translation								0.5
Common shares issued, net of withholding tax	(1.6)		(1.6)			(1.6)
Common shares issued, net of withholding tax (in shares)		86,349
Theoretical Common Shares in Non-Qualified Deferred Compensation Plans	0.1		0.1			0.1
Stock-based compensation	3.6		3.6			3.6
Cash dividends declared ($0.16) per common share	(8.0)				(8.0)	(8.0)
Balance at Aug. 31, 2025	1,233.2	$ 0.0	915.3	(3.4)	193.0	1,104.9	128.3
Balance (in shares) at Aug. 31, 2025		49,635,244
Mezzanine Equity, Balance at Aug. 31, 2025								97.7
Balance at May. 31, 2025	1,197.9	$ 0.0	913.9	(4.0)	164.2	1,074.1	123.8
Balance (in shares) at May. 31, 2025		49,548,895
Mezzanine Equity, Balance at May. 31, 2025	0.0							0.0
Net earnings (loss)	70.9
Other comprehensive income (loss)	6.1
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	4.9
Balance at Feb. 28, 2026	1,260.6	$ 0.0	916.7	2.1	205.7	1,124.5	136.1
Balance (in shares) at Feb. 28, 2026		49,910,958
Mezzanine Equity, Balance at Feb. 28, 2026	96.8							96.8
Balance at Aug. 31, 2025	1,233.2	$ 0.0	915.3	(3.4)	193.0	1,104.9	128.3
Balance (in shares) at Aug. 31, 2025		49,635,244
Mezzanine Equity, Balance at Aug. 31, 2025								97.7
Net earnings (loss)	22.1				18.8	18.8	3.3
Net earnings (loss)								(0.6)
Other comprehensive income (loss)	1.9			1.9		1.9
Foreign currency translation								1.1
Common shares issued, net of withholding tax	(3.2)		(3.2)			(3.2)
Common shares issued, net of withholding tax (in shares)		221,867
Stock-based compensation	3.0		3.0			3.0
Cash dividends declared ($0.16) per common share	(8.3)				(8.3)	(8.3)
Balance at Nov. 30, 2025	1,248.7	$ 0.0	915.1	(1.5)	203.5	1,117.1	131.6
Balance (in shares) at Nov. 30, 2025		49,857,111
Mezzanine Equity, Balance at Nov. 30, 2025								98.2
Net earnings (loss)	10.8
Net earnings (loss)	14.9				10.4	10.4	4.5
Net earnings (loss)								(4.1)
Other comprehensive income (loss)	3.6			3.6		3.6
Foreign currency translation								2.7
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	0.4
Common shares issued, net of withholding tax	(1.2)		(1.2)			(1.2)
Common shares issued, net of withholding tax (in shares)		53,847
Stock-based compensation	2.8		2.8			2.8
Cash dividends declared ($0.16) per common share	(8.2)				(8.2)	(8.2)
Balance at Feb. 28, 2026	1,260.6	$ 0.0	$ 916.7	$ 2.1	$ 205.7	$ 1,124.5	$ 136.1
Balance (in shares) at Feb. 28, 2026		49,910,958
Mezzanine Equity, Balance at Feb. 28, 2026	$ 96.8							$ 96.8