SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012
Segment Reporting Information
Net sales to external customers	$ 249,844	$ 237,557	$ 735,811	$ 686,177
Operating income (loss)	37,728	33,492	101,600	92,000
Total assets	1,044,802		1,044,802		976,379
Water Systems
Segment Reporting Information
Net sales to external customers	197,900	189,800	588,100	557,500
Operating income (loss)	36,000	35,100	107,300	102,000
Total assets	732,400		732,400		692,000
Fueling Systems
Segment Reporting Information
Net sales to external customers	51,900	47,800	147,700	128,700
Operating income (loss)	14,000	11,400	31,100	26,000
Total assets	245,400		245,400		252,000
Other
Segment Reporting Information
Net sales to external customers	0	0	0	0
Operating income (loss)	(12,300)	(13,000)	(36,800)	(36,000)
Total assets	$ 67,000		$ 67,000		$ 32,400