Acquisition of Donna Karan International (Detail Textuals) - USD ($) $ in Thousands		1 Months Ended
	Dec. 01, 2016	Dec. 01, 2016	Apr. 30, 2017	Jan. 31, 2017	Apr. 30, 2016
Business Acquisition [Line Items]
Goodwill	$ 220,600	$ 220,600	$ 266,901	$ 269,262	$ 50,406
Other intangible assets			$ 47,797	$ 48,558	$ 10,738
Donna Karan International Inc. ("DKI")
Business Acquisition [Line Items]
Initial purchase price	669,800
Reduction in Goodwill due to unrecorded indemnification assets	2,700
Goodwill	$ 217,947	217,947
Goodwill deductible period for tax purposes	15 years
Other intangible assets	$ 410,000	410,000
Donna Karan International Inc. ("DKI") | Tradenames
Business Acquisition [Line Items]
Other intangible assets	370,000	$ 370,000
Donna Karan International Inc. ("DKI") | Customer relationships
Business Acquisition [Line Items]
Intangible assets, estimated useful lives		17 years
Other intangible assets	$ 40,000	$ 40,000