Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 29, 2017	Jan. 31, 2016	Jan. 25, 2015	Mar. 04, 2015	Mar. 07, 2012
Commitments And Contingencies [Line Items]
Rent expense	$ 6,700,000	$ 7,700,000	$ 8,800,000
Sublease income	131,000	135,000	142,000
Earn-out liability	6,068,000	6,259,000
Earn-out liability expected to be paid within twelve months	$ 1,426,000
Description of prior year immaterial error corrected in current year	Although the Swiss Plan originated in prior years, the Company accounted for the Swiss Plan in accordance with ASC 715-30 Defined Benefit Plans - Pensions starting in 2017. The Company evaluated the impact of not recording the net pension obligation in the Consolidated Balance Sheets and corresponding charges in net income and total comprehensive income in the Consolidated Statements of Income and Comprehensive Income in the historical periods presented, and concluded that the effect was immaterial. The Company corrected the immaterial error in 2017 by recording an out of period expense of $1.5 million reflected in net income, an increase in the pension obligation of $4.7 million, an increase in deferred income tax assets of $0.7 million, and a decrease to accumulated other comprehensive income of $2.4 million.
Deferred compensation expense (benefit), net of forfeitures	$ 4,300,000	(800,000)	2,300,000
Other assets
Commitments And Contingencies [Line Items]
Cash surrender value of life insurance	$ 18,900,000	16,800,000
Environmental Issue [Member]
Commitments And Contingencies [Line Items]
Lease duration	40 years
US Plan
Commitments And Contingencies [Line Items]
Employer contribution to defined contribution plan	$ 1,200,000	1,300,000	1,300,000
Foreign Plan
Commitments And Contingencies [Line Items]
Employer contribution to defined contribution plan	1,000,000	1,100,000	$ 1,300,000
Cycleo [Member]
Commitments And Contingencies [Line Items]
Earn-out liability	6,068,000	6,259,000
Earn-out liability expected to be paid within twelve months	1,426,000
Potential payments under earn-out arrangements, high estimate					$ 16,000,000
Triune Systems
Commitments And Contingencies [Line Items]
Earn-out liability	0	0
Earn-out liability expected to be paid within twelve months	0
Earn-out Payable Within First Three Fiscal Years Of Acquisition Date [Member] | Triune Systems
Commitments And Contingencies [Line Items]
Potential payments under earn-out arrangements, high estimate				$ 70,000,000
Additional Earn-out Payable After Third Fiscal Year From Acquisition Date [Member] | Triune Systems
Commitments And Contingencies [Line Items]
Potential payments under earn-out arrangements, high estimate				$ 16,000,000
Minimum | Environmental Issue [Member]
Commitments And Contingencies [Line Items]
Estimate of probable loss		5,000,000
Maximum | Environmental Issue [Member]
Commitments And Contingencies [Line Items]
Estimate of probable loss		$ 7,200,000
Foreign Plan
Commitments And Contingencies [Line Items]
Employer contribution to defined benefit plan	700,000
Unfunded net pension obligation	4,700,000
Pension plan assets	18,200,000
Projected benefit obligation of pension plan	22,800,000
Net periodic pension expense	700,000
Net Income Correction
Commitments And Contingencies [Line Items]
Impact of immaterial prior year error corrected in current year	1,400,000
Pension Obligation Correction
Commitments And Contingencies [Line Items]
Impact of immaterial prior year error corrected in current year	5,800,000
Deferred Income Tax Assets Correction
Commitments And Contingencies [Line Items]
Impact of immaterial prior year error corrected in current year	1,300,000
Accumulated Other Comprehensive Income Correction
Commitments And Contingencies [Line Items]
Impact of immaterial prior year error corrected in current year	$ 3,100,000