Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 1,861,522	$ 1,622,642	$ 1,404,033
Cost of good sold	1,341,908	1,214,287	1,061,367
Gross Profit	519,614	408,355	342,666
Equity in Earnings of Unconsolidated Joint Venture	32,488	37,441	42,585
Corporate General and Administrative Expense	(46,801)	(49,511)	(65,410)
Premium Paid on Early Retirement of Senior Notes	(8,407)
Gain on Sale of Businesses		51,973
Impairment Losses			(25,131)
Other Non-Operating Income (Loss)	9,073	20,274	(594)
Interest Expense, net	(30,873)	(44,420)	(38,421)
Earnings from Continuing Operations Before Income Taxes	475,094	424,112	255,695
Income Taxes	(100,847)	(89,946)	(24,504)
Earnings from Continuing Operations	374,247	334,166	231,191
Earnings (Loss) from Discontinued Operations, net of Income Taxes		5,278	(160,297)
Net Earnings	$ 374,247	$ 339,444	$ 70,894
BASIC EARNINGS (LOSS) PER SHARE
Continuing Operations	$ 9.23	$ 8.04	$ 5.50
Discontinued Operations		0.13	(3.81)
Net Earnings	9.23	8.17	1.69
DILUTED EARNINGS (LOSS) PER SHARE
Continuing Operations	9.14	7.99	5.47
Discontinued Operations		0.13	(3.79)
Net Earnings	$ 9.14	$ 8.12	$ 1.68
AVERAGE SHARES OUTSTANDING
Basic	40,547,048	41,543,067	42,021,892
Diluted	40,929,712	41,826,709	42,285,343
CASH DIVIDENDS PER SHARE	$ 0.75	$ 0.10	$ 0.40