Quarterly Financial Information, Unaudited (Tables)

12 Months Ended

Feb. 28, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	Quarter ended
	May 31, 2016		August 31, 2016		November 30, 2016		February 28, 2017
	(in thousands, except per share data)
Net sales	$	242,667	$	195,045	$	227,459	$	193,759
Gross profit	63,327		41,886		53,866		45,705
Net income	21,063		10,023		18,251		11,584
Basic earnings per share	0.81		0.39		0.70		0.45
Diluted earnings per share	0.81		0.38		0.70		0.44

	Quarter ended
	May 31, 2015		August 31, 2015		November 30, 2015		February 29, 2016
	(in thousands, except per share data)
Net sales	$	228,888	$	214,246	$	242,447	$	217,611
Gross profit	59,304		53,505		62,448		54,854
Net income	19,924		17,243		23,547		16,076
Basic earnings per share	0.77		0.67		0.91		0.62
Diluted earnings per share	0.77		0.67		0.91		0.62