SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013
Segment Reporting Information
Net sales to external customers	$ 278,053	$ 249,844	$ 793,940	$ 735,811
Operating income (loss)	32,430	37,728	97,518	101,600
Total assets	1,145,398		1,145,398		1,051,873
Water Systems
Segment Reporting Information
Net sales to external customers	216,600	197,900	627,800	588,100
Operating income (loss)	28,300	36,000	99,300	107,300
Total assets	811,900		811,900		714,700
Fueling Systems
Segment Reporting Information
Net sales to external customers	61,500	51,900	166,100	147,700
Operating income (loss)	15,400	14,000	37,900	31,100
Total assets	259,500		259,500		247,900
Other
Segment Reporting Information
Net sales to external customers	0	0	0	0
Operating income (loss)	(11,300)	(12,300)	(39,700)	(36,800)
Total assets	$ 74,000		$ 74,000		$ 89,300