RESTRUCTURING (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Restructuring Cost and Reserve
Restructuring expense	$ 1,086,000	$ 828,000	$ 1,517,000	$ 2,235,000
Restructuring reserves	300,000	0	300,000	0
Employee severance
Restructuring Cost and Reserve
Restructuring expense	200,000		500,000
Equipment relocation
Restructuring Cost and Reserve
Restructuring expense	400,000		400,000
Asset write-off
Restructuring Cost and Reserve
Restructuring expense	100,000		200,000
Other
Restructuring Cost and Reserve
Restructuring expense	400,000		400,000
Water Systems
Restructuring Cost and Reserve
Restructuring expense	1,000,000		1,400,000
Water Systems | Employee severance
Restructuring Cost and Reserve
Restructuring expense	100,000		400,000
Water Systems | Equipment relocation
Restructuring Cost and Reserve
Restructuring expense	400,000		400,000
Water Systems | Asset write-off
Restructuring Cost and Reserve
Restructuring expense	100,000		200,000
Water Systems | Other
Restructuring Cost and Reserve
Restructuring expense	400,000		400,000
Fueling Systems
Restructuring Cost and Reserve
Restructuring expense	100,000		100,000
Fueling Systems | Employee severance
Restructuring Cost and Reserve
Restructuring expense	100,000		100,000
Fueling Systems | Equipment relocation
Restructuring Cost and Reserve
Restructuring expense	0		0
Fueling Systems | Asset write-off
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 | Asset write-off
Restructuring Cost and Reserve
Restructuring expense	0		0
Other | Other
Restructuring Cost and Reserve
Restructuring expense	$ 0		$ 0