CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Income Statement [Abstract]
Net sales	$ 529,042	$ 457,403
Cost of goods sold	327,186	291,734
Gross profit	201,856	165,669
Selling, general and administrative expenses	197,411	153,105
Depreciation and amortization	9,838	7,193
Operating profit (loss)	(5,393)	5,371
Equity income (loss) in unconsolidated affiliates	(1,152)	269
Interest and financing charges, net	(9,949)	(1,242)
Income (loss) before income taxes	(16,494)	4,398
Income tax expense (benefit)	(6,103)	1,627
Net income (loss)	$ (10,391)	$ 2,771
Basic:
Net income (loss) per common share (in dollars per share)	$ (0.21)	$ 0.06
Weighted average number of shares outstanding (in shares)	48,648	45,549
Diluted:
Net income (loss) per common share (in dollars per share)	$ (0.21)	$ 0.06
Weighted average number of shares outstanding (in shares)	48,648	46,942
Net income (loss)	$ (10,391)	$ 2,771
Other comprehensive income (loss):
Foreign currency translation adjustments	68	6,032
Other comprehensive income	68	6,032
Comprehensive income (loss)	$ (10,323)	$ 8,803