Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$ 824	$ 769
Operating cash flows used for finance leases	5	5
Financing cash flows used for finance leases	75	46
Right-of-use assets obtained In exchange for lease liabilities:
Operating leases	1,299	180
Finance leases	$ 62	$ 188