Leases - Balance Sheet Components (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Feb. 01, 2019	Jan. 31, 2019
Finance Lease:
Property and equipment, net	$ 39,411	$ 43,400
Other accrued liabilities (current)	4,633
Other liabilities, non-current	59,257
Operating Leases:
Operating lease right-of-use assets	11,147		$ 0
Operating lease liabilities (current)	3,750		0
Operating lease liabilities, non-current	$ 8,113		$ 0