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
	(Restated)		(Restated)		(Restated)		(Restated)
	(in thousands, except per share data)
Net sales	$	250,366	$	200,790	$	228,116	$	184,266
Gross profit	65,128		42,104		51,297		46,803
Net income	22,189		10,159		16,646		12,270
Basic earnings per share	0.86		0.39		0.64		0.47
Diluted earnings per share	0.85		0.39		0.64		0.47

	Quarter ended
	May 31, 2015		August 31, 2015		November 30, 2015		February 29, 2016
	(Restated)		(Restated)		(Restated)		(Restated)
	(in thousands, except per share data)
Net sales	$	240,440	$	199,670	$	241,596	$	207,694
Gross profit	63,704		49,702		61,288		53,424
Net income	22,674		14,866		22,822		15,182
Basic earnings per share	0.88		0.58		0.88		0.59
Diluted earnings per share	0.88		0.57		0.88		0.58