Exit and Disposal Activities - Recorded Costs Associated with Exit and Disposal Activities (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 0	$ 2,000,000	$ 0	$ 5,400,000
Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		900,000		900,000
Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		1,100,000		4,500,000
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		1,500,000		4,700,000
Cost of Goods Sold [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		500,000		500,000
Cost of Goods Sold [Member] | Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		1,000,000		4,200,000
Operating Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		500,000		700,000
Operating Expenses [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		400,000		400,000
Operating Expenses [Member] | Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs		$ 100,000		$ 300,000