Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019	Oct. 31, 2018
Level 2 | Senior secured term loan facility (the "Term Loan")
Debt Instrument [Line Items]
Debt instruments, carrying value	$ 300,000	$ 300,000	$ 300,000
Debt instruments, fair value	300,000	300,000	300,000
Level 2 | Revolving credit facility
Debt Instrument [Line Items]
Debt instruments, carrying value	279,880		309,599
Debt instruments, fair value	279,880		309,599
Level 2 | Unsecured Loan
Debt Instrument [Line Items]
Debt instruments, carrying value	2,948
Debt instruments, fair value	2,948
Level 3 | LVMH Note
Debt Instrument [Line Items]
Debt instruments, carrying value	100,623	96,618	95,345
Debt instruments, fair value	$ 100,825	$ 88,608	$ 95,345