Segment and Geographic Information (Details 1) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2018		Jan. 31, 2017		Jan. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales		$ 149,214	$ 190,693	$ 128,781	$ 99,265	$ 130,785	$ 179,818	$ 128,086	$ 114,063	$ 567,953	[1]	$ 552,752	[1]	$ 594,923	[1]
Operating (Loss) / Income	[2],[3],[4],[5],[6],[7]									43,200		53,981		70,107
Total Assets		645,380				607,802				645,380		607,802
Property, Plant and Equipment, Net		24,671				34,173				24,671		34,173
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	[1]									260,606		296,311		326,206
Operating (Loss) / Income	[2],[3],[4],[5],[6],[7]									(629)		16,917		29,867
Total Assets		188,346				207,246				188,346		207,246
Property, Plant and Equipment, Net		16,570				19,197				16,570		19,197
International
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	[1]									307,347		256,441		268,717
Operating (Loss) / Income	[2],[3],[4],[5],[6],[7]									43,829		37,064		$ 40,240
Total Assets		457,034				400,556				457,034		400,556
Property, Plant and Equipment, Net		$ 8,101				$ 14,976				$ 8,101		$ 14,976

[1] The United States and International net sales are net of intercompany sales of $268.1 million, $289.2 million and $309.1 million for the fiscal years ended January 31, 2018, 2017 and 2016, respectively.

[2] Fiscal 2016 Wholesale and United States and International operating income included a $4.0 million charge as a result of actions taken by the Company in fiscal 2016 to achieve greater operating efficiencies and streamline its operations.

[3] Fiscal 2017 Wholesale and United States operating income included a pre-tax charge of $1.8 million, as a result of the immediate vesting of stock awards and certain other compensation related to the announcement of the retirement of the Company’s former Vice Chairman and Chief Operating Officer, in fiscal 2017.

[4] Fiscal 2018 Wholesale and United States and International operating (loss) / income included a charge of $13.6 million as part of the Company’s cost savings initiatives. In fiscal 2018, the Company took actions to better align its global infrastructure with the current business environment by consolidating certain operations and streamlining functions to reduce costs and improve profitability. Also, in light of the changing retail landscape and the growing importance of digital marketing and online sales, the Company decided to cease its participation in the Baselworld Watch and Jewelry Show.

[5] Fiscal 2018 Wholesale and United States and International operating (loss) / income included a charge of $6.8 million related to transaction charges and the amortization of acquisition accounting adjustments associated with the purchase of the Olivia Burton brand.

[6] The International operating income included $41.5 million, $40.0 million and $44.5 million of certain intercompany profits related to the Company’s supply chain operations for the fiscal years ended January 31, 2018, 2017 and 2016, respectively.

[7] The United States operating income included $25.2 million, $26.3 million and $27.0 million of unallocated corporate expenses for the fiscal years ended January 31, 2018, 2017 and 2016, respectively.