SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 29, 2012
Segment Reporting Information
Net sales to external customers	$ 222,524	$ 201,924
Operating income (loss)	23,166	20,998
Total assets	996,457		976,379
Water Systems
Segment Reporting Information
Net sales to external customers	176,400	165,000
Operating income (loss)	28,700	26,800
Total assets	713,000		692,000
Fueling Systems
Segment Reporting Information
Net sales to external customers	46,100	36,900
Operating income (loss)	6,200	5,600
Total assets	258,100		252,000
Other
Segment Reporting Information
Net sales to external customers	0	0
Operating income (loss)	(11,700)	(11,400)
Total assets	$ 25,400		$ 32,400