RESTRUCTURING (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	$ (73,000)	$ 418,000
Restructuring Reserves	0	0
Phase IV
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	(73,000)
Phase IV | Restructuring Costs | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2,600,000
Percentage of non-cash charges related to restructuring (as a percent)	50.00%
Phase IV | Restructuring Costs | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	5,200,000
Percentage of non-cash charges related to restructuring (as a percent)	60.00%
Phase IV | Facility Closing | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,200,000
Phase IV | Facility Closing | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	3,500,000
Phase IV | Equipment Relocation
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	100,000
Phase IV | Asset write-off
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	200,000
Phase IV | Asset sale
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	(400,000)
Phase IV | Man Hours Transfer
Restructuring Cost and Reserve [Line Items]
Manufacturing Activity, Man Hours	260,000
Water Systems
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense		418,000
Water Systems | Phase IV
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	(100,000)
Water Systems | Phase IV | Equipment Relocation
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	100,000
Water Systems | Phase IV | Asset write-off
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	200,000
Water Systems | Phase IV | Asset sale
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	(400,000)
Fueling Systems | Phase IV
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Fueling Systems | Phase IV | Equipment Relocation
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Fueling Systems | Phase IV | Asset write-off
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Fueling Systems | Phase IV | Asset sale
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Other | Phase IV
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Other | Phase IV | Equipment Relocation
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Other | Phase IV | Asset write-off
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	0
Other | Phase IV | Asset sale
Restructuring Cost and Reserve [Line Items]
Restructuring (income)/expense	$ 0