SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015
Segment Reporting Information
Net sales to external customers	$ 232,485	$ 278,053	$ 705,640	$ 793,940
Operating income/(loss)	27,766	32,430	66,805	97,518
Total assets	1,036,189		1,036,189		$ 1,075,887
Water Systems
Segment Reporting Information
Net sales to external customers	173,500	216,600	544,300	627,800
Operating income/(loss)	23,100	28,300	66,800	99,300
Total assets	701,600		701,600		757,500
Fueling Systems
Segment Reporting Information
Net sales to external customers	59,000	61,500	161,300	166,100
Operating income/(loss)	15,400	15,400	37,400	37,900
Total assets	249,600		249,600		252,700
Other
Segment Reporting Information
Net sales to external customers	0	0	0	0
Operating income/(loss)	(10,700)	$ (11,300)	(37,400)	$ (39,700)
Total assets	$ 85,000		$ 85,000		$ 65,700