RESTRUCTURING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Jul. 01, 2014
Restructuring Cost and Reserve
Restructuring expense	$ 1,304	$ 1,086	$ 2,525	$ 1,517
Restructuring reserves	3,600	$ 300	3,600	$ 300
Employee Severance
Restructuring Cost and Reserve
Restructuring expense	600		1,000
Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	100		400
Other
Restructuring Cost and Reserve
Restructuring expense	600		1,100
Water Systems
Restructuring Cost and Reserve
Restructuring expense	1,300		2,200
Water Systems | Employee Severance
Restructuring Cost and Reserve
Restructuring expense	600		700
Water Systems | Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	100		400
Water Systems | Other
Restructuring Cost and Reserve
Restructuring expense	600		1,100
Fueling Systems
Restructuring Cost and Reserve
Restructuring expense	0		300
Fueling Systems | Employee Severance
Restructuring Cost and Reserve
Restructuring expense	0		300
Fueling Systems | Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	0		0
Fueling Systems | Other
Restructuring Cost and Reserve
Restructuring expense	0		0
Other
Restructuring Cost and Reserve
Restructuring expense	0		0
Other | Employee Severance
Restructuring Cost and Reserve
Restructuring expense	0		0
Other | Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	0		0
Other | Other
Restructuring Cost and Reserve
Restructuring expense	$ 0		$ 0
Wittlich Facility Closure
Restructuring Cost and Reserve
Restructuring and related cost, expected cost					$ 19,400