RESTRUCTURING (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Jul. 01, 2014
Restructuring Cost and Reserve
Restructuring expense	$ 758	$ 295	$ 1,221	$ 431
Restructuring reserves	4,300	$ 0	4,300	$ 0
Employee Severance
Restructuring Cost and Reserve
Restructuring expense	300		400
Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	200		300
Other
Restructuring Cost and Reserve
Restructuring expense	300		500
Water Systems
Restructuring Cost and Reserve
Restructuring expense	600		900
Water Systems | Employee Severance
Restructuring Cost and Reserve
Restructuring expense	100		100
Water Systems | Equipment Relocation
Restructuring Cost and Reserve
Restructuring expense	200		300
Water Systems | Other
Restructuring Cost and Reserve
Restructuring expense	300		500
Fueling Systems
Restructuring Cost and Reserve
Restructuring expense	200		300
Fueling Systems | Employee Severance
Restructuring Cost and Reserve
Restructuring expense	200		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