Business Combinations - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2017	Jan. 28, 2017
Restructuring Cost and Reserve [Line Items]
Total Restructuring costs identified	$ (128)
Hi-Tech
Restructuring Cost and Reserve [Line Items]
Contract termination costs	302	$ 386
Leases, net of sublease	1,629	1,920
Severance costs	788	1,270
Service costs	113	206
Total restructuring costs identified	2,832	$ 3,782
Contract termination costs	(84)
Leases, net of sublease	(291)
Severance costs	(482)
Service costs	(93)
Total Restructuring costs identified	$ (950)