SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Segment Reporting Information
Net sales to external customers	$ 231,421	$ 222,524
Operating income (loss)	25,960	23,166
Total assets	1,089,740		1,051,873
Water Systems
Segment Reporting Information
Net sales to external customers	184,600	176,400
Operating income (loss)	29,200	28,700
Total assets	772,300		714,700
Fueling Systems
Segment Reporting Information
Net sales to external customers	46,800	46,100
Operating income (loss)	9,100	6,200
Total assets	252,800		247,900
Other
Segment Reporting Information
Net sales to external customers	0	0
Operating income (loss)	(12,300)	(11,700)
Total assets	$ 64,600		$ 89,300