Taxes on Income - Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands	Feb. 03, 2018	Jan. 28, 2017
Deferred tax assets: Current
Valuation Allowance	$ (16,500)
Deferred tax assets: Non-Current
Deferred revenue	213	$ 478
Amortization	5,967
Other	1,578	2,691
State income taxes		85
Employee compensation	543	1,630
Net operating loss and credit carryforwards	18,778	12,754
Valuation Allowance	(27,079)	(14,889)
Total deferred income tax assets		2,749
Deferred tax liabilities: Non-Current
Amortization	(10,466)	(10,376)
Depreciation		(91)
Total deferred income tax liabilities	(10,466)	(10,467)
Net deferred tax assets
Net deferred income tax liabilities	$ (10,466)	$ (7,718)