Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Income Statement [Abstract]
Revenue, Net	$ 927,087	$ 810,430	$ 863,538
Costs and Expenses
Cost of Sales	728,466	650,121	658,206
Gross profit	198,621	160,309	205,332
Selling, General and Administrative	121,665	112,061	106,424
Operating Income (Loss)	76,956	48,248	98,908
Interest Expense	14,971	13,860	14,732
Other Expense (Income) - net	(1,020)	3,489	(1,121)
Income before income taxes	63,005	30,899	85,297
Income Tax Expense	11,797	(14,270)	24,033
Net Income	$ 51,208	$ 45,169	$ 61,264
Earnings Per Common Share
Basic Earnings Per Share (usd per share)	$ 1.97	$ 1.74	$ 2.36
Diluted Earnings Per Share (usd per share)	$ 1.96	$ 1.73	$ 2.35
Weighted average number common shares (shares)	26,038,000	25,970,000	25,965,000
Weighted average number common shares and potentially dilutive common shares (shares)	26,107,000	26,036,000	26,097,000
Common Stock, Dividends, Per Share, Declared	$ 0.68	$ 0.68	$ 0.64