Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 28, 2017	Jan. 30, 2016
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 125,451	$ 92,605
Less accumulated depreciation and amortization	(42,342)	(30,173)
Total property and equipment, net	83,109	62,432
Furniture, fixtures, and equipment
Property Plant And Equipment [Line Items]
Total property and equipment, gross	52,719	41,833
Leasehold improvements
Property Plant And Equipment [Line Items]
Total property and equipment, gross	61,986	45,179
Construction in progress
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 10,746	$ 5,593