SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Segment Reporting Information
Net sales to external customers	$ 284,466	$ 263,443	$ 515,887	$ 485,967
Operating income (loss)	39,128	40,706	65,088	63,872
Total assets	1,166,377		1,166,377		1,051,873
Water Systems
Segment Reporting Information
Net sales to external customers	226,700	213,700	411,300	390,200
Operating income (loss)	41,700	42,700	71,000	71,400
Total assets	849,000		849,000		714,700
Fueling Systems
Segment Reporting Information
Net sales to external customers	57,800	49,700	104,600	95,800
Operating income (loss)	13,500	10,800	22,500	17,100
Total assets	260,100		260,100		247,900
Other
Segment Reporting Information
Net sales to external customers	0	0	0	0
Operating income (loss)	(16,100)	(12,800)	(28,400)	(24,600)
Total assets	$ 57,300		$ 57,300		$ 89,300