Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Income Statement [Abstract]
Revenues	$ 236,190	$ 222,787	$ 525,313	$ 485,023
Costs and Expenses
Cost of Revenue	183,504	175,883	406,520	379,414
Gross margin	52,686	46,904	118,793	105,609
Selling, general and administrative	30,479	29,799	65,612	64,808
Operating income	22,207	17,105	53,181	40,801
Interest expense	3,548	3,980	7,132	7,818
Other (income) expense, net	686	(857)	1,110	(1,148)
Income before income taxes	17,973	13,982	44,939	34,131
Income tax expense	2,415	2,738	8,097	7,169
Net income	$ 15,558	$ 11,244	$ 36,842	$ 26,962
Earnings Per Common Share
Basic Earnings Per Share (usd per share)	$ 0.59	$ 0.43	$ 1.41	$ 1.04
Diluted Earnings Per Share (usd per share)	0.59	0.43	1.40	1.03
Common Stock, Dividends, Per Share, Declared	$ 0.17	$ 0.17	$ 0.34	$ 0.34