CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 31, 2018	Oct. 31, 2017		Oct. 31, 2018	Oct. 31, 2017
Income Statement [Abstract]
Net sales	$ 1,072,982	$ 1,024,993	[1]	$ 2,309,423	$ 2,092,040	[1]
Cost of goods sold	690,882	633,897	[2]	1,461,252	1,296,239	[2]
Gross profit	382,100	391,096		848,171	795,801
Selling, general and administrative expenses	232,052	242,740		632,983	636,000
Depreciation and amortization	10,033	6,906		28,868	27,480
Operating profit	140,015	141,450		186,320	132,321
Other income (loss)	176	(2,072)		(303)	(2,935)
Interest and financing charges, net	(12,323)	(11,431)		(32,153)	(31,266)
Income before income taxes	127,868	127,947		153,864	98,120
Income tax expense	33,843	46,322		39,877	35,454
Net income	$ 94,025	$ 81,625		$ 113,987	$ 62,666
Basic:
Net income per common share (in dollars per share)	$ 1.91	$ 1.67		$ 2.32	$ 1.29
Weighted average number of shares outstanding (in shares)	49,231	48,846		49,176	48,729
Diluted:
Net income per common share (in dollars per share)	$ 1.86	$ 1.65		$ 2.26	$ 1.27
Weighted average number of shares outstanding (in shares)	50,494	49,528		50,345	49,410
Net income	$ 94,025	$ 81,625		$ 113,987	$ 62,666
Other comprehensive income:
Foreign currency translation adjustments	(1,979)	4,182		(10,044)	12,223
Other comprehensive income (loss)	(1,979)	4,182		(10,044)	12,223
Comprehensive income	$ 92,046	$ 85,807		$ 103,943	$ 74,889

[1] Certain reclassifications have been made between the wholesale operations segment and the elimination column as a result of sales eliminations within the wholesale operations segment being misclassified as inter-segment eliminations.

[2] Certain reclassifications have been made as a result of the Company’s reclassifying the impact of certain components of foreign currency gain (loss) from cost of goods sold and interest expense to other income.