Acquisition of Vilebrequin - Summary of components of preliminary purchase price allocation (Details) In Thousands, unless otherwise specified				1 Months Ended
	Jul. 31, 2013 USD ($)	Jan. 31, 2013 USD ($)	Jul. 31, 2012 USD ($)	Aug. 07, 2012 Vilebrequin USD ($)	Aug. 07, 2012 Vilebrequin EUR (€)	Jul. 31, 2013 Vilebrequin USD ($)
Purchase price:
Cash paid				$ 87,573	€ 70,500
Notes issued				18,633	15,000
Fair value of contingent consideration	5,711	5,787		5,452		5,700
Total consideration paid by the company in business acquisition				111,658
Allocation:
Current assets				25,793
Property, plant and equipment				5,724
Identifiable intangible assets				68,847
Other non-current assets, net				15,274
Assumed liabilities				(12,938)
Deferred income taxes				(17,820)
Goodwill	54,153	60,396	26,100	26,778
Business acquisition, purchase price allocation, assets acquired (liabilities assumed), net, total				$ 111,658