Investments in Unconsolidated Affiliates - Schedule of Combined Financial Information for Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	May 31, 2024
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	$ 178,547		$ 244,225
Total assets	1,645,271		1,638,637
Current liabilities	166,238		178,376
Long-term debt	300,009		298,133
Other non-current liabilities	57,918		62,243
Equity	901,353		888,879
Total liabilities and equity	1,645,271		1,638,637
Net sales	257,308	$ 311,918
Gross profit	62,495	69,630
Net earnings	24,008	99,703
Equity Method Investment, Nonconsolidated Investee, Other
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	43,939		36,163
Other current assets	566,270		605,043
Noncurrent assets	368,543		360,261
Total assets	978,752		1,001,467
Current liabilities	216,817		264,963
Current maturities of long-term debt	6,583		13,450
Long-term debt	356,485		349,431
Other non-current liabilities	146,754		146,984
Equity	252,113		226,639
Total liabilities and equity	978,752		$ 1,001,467
Net sales	515,673	568,584
Gross profit	134,335	173,017
Operating income	94,346	131,447
Depreciation and amortization	8,006	7,576
Interest expense	4,758	5,739
Income tax expense	645	909
Net earnings	$ 90,682	$ 125,653