SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Jan. 03, 2015
Segment Reporting Information
Net sales to external customers	$ 247,427	$ 284,466	$ 473,155	$ 515,887
Operating income (loss)	23,172	39,128	39,039	65,088
Total assets	1,069,865		1,069,865		$ 1,075,887
Water Systems
Segment Reporting Information
Net sales to external customers	191,600	226,700	370,900	411,300
Operating income (loss)	24,300	41,700	43,700	71,000
Total assets	754,000		754,000		757,500
Fueling Systems
Segment Reporting Information
Net sales to external customers	55,800	57,800	102,300	104,600
Operating income (loss)	12,400	13,500	22,000	22,500
Total assets	250,200		250,200		252,700
Other
Segment Reporting Information
Net sales to external customers	0	0	0	0
Operating income (loss)	(13,500)	$ (16,100)	(26,700)	$ (28,400)
Total assets	$ 65,700		$ 65,700		$ 65,700