Notes Payable - Long-term debt (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
Long-term Debt
Debt Instrument [Line Items]
Subtotal	$ 434,931	$ 427,860	$ 588,243
Less: Net debt issuance costs (1)	(6,095)	(7,402)	(8,708)
Debt discount	(20,116)	(22,991)	(25,734)
Current portion of long-term debt	(3,717)	(673)	(683)
Total	405,003	396,794	553,118
Secured notes
Debt Instrument [Line Items]
Subtotal	300,000
Secured notes \| Long-term Debt
Debt Instrument [Line Items]
Subtotal	300,000	300,000	300,000
Revolving credit facility
Debt Instrument [Line Items]
Debt issuance costs	3,300	4,600	5,800
Revolving credit facility \| Long-term Debt
Debt Instrument [Line Items]
Subtotal			160,000
LVMH Note
Debt Instrument [Line Items]
Debt discount	(40,000)
LVMH Note \| Long-term Debt
Debt Instrument [Line Items]
Subtotal	125,000	125,000	125,000
Unsecured Loan \| Long-term Debt
Debt Instrument [Line Items]
Subtotal	6,401	$ 2,860	$ 3,243
Overdraft facilities \| Long-term Debt
Debt Instrument [Line Items]
Subtotal	$ 3,530

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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