Notes Payable (Details) - USD ($) $ in Thousands		Jul. 31, 2018	Jan. 31, 2018	Jul. 31, 2017
Debt Instrument [Line Items]
Subtotal		$ 536,426	$ 437,003	$ 618,955
Less: Net debt issuance costs	[1]	(11,320)	(12,626)	(13,932)
Debt discount		(30,900)	(33,333)	(36,189)
Total		494,206	391,044	568,834
Term loan
Debt Instrument [Line Items]
Subtotal		300,000	300,000	300,000
Revolving credit facility
Debt Instrument [Line Items]
Subtotal		111,426	12,003	193,955
Less: Net debt issuance costs		(8,300)	(9,500)	(10,800)
Note issued to LVMH
Debt Instrument [Line Items]
Subtotal		125,000	$ 125,000	$ 125,000
Debt discount		$ (40,000)

[1] Does not include debt issuance costs, net of amortization, totaling $8.3 million, $10.8 million and $9.5 million as of July 31, 2018, July 31, 2017 and January 31, 2018, respectively, related to the revolving credit facility. The debt issuance costs have been deferred and are classified within prepaid expenses and other current assets in the accompanying Condensed Consolidated Balance Sheets as required under Accounting Standards Update ("ASU") 2015-15.