CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Income Statement [Abstract]
Net sales	$ 457,403	$ 432,965
Cost of goods sold	291,734	278,538
Gross profit	165,669	154,427
Selling, general and administrative expenses	153,105	137,034
Depreciation and amortization	7,193	5,687
Operating profit	5,371	11,706
Equity income in joint venture	269
Interest and financing charges, net	(1,242)	(975)
Income before income taxes	4,398	10,731
Income tax expense	1,627	3,971
Net income	$ 2,771	$ 6,760
Basic:
Net income per common share (in dollars per share)	$ 0.06	$ 0.15
Weighted average number of shares outstanding (in shares)	45,549	44,965
Diluted:
Net income per common share (in dollars per share)	$ 0.06	$ 0.15
Weighted average number of shares outstanding (in shares)	46,942	46,210
Net income	$ 2,771	$ 6,760
Other comprehensive income (loss):
Foreign currency translation adjustments	6,032	(11,124)
Other comprehensive income (loss)	6,032	(11,124)
Comprehensive income (loss)	$ 8,803	$ (4,364)