SHAREHOLDERS' EQUITY (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Jan. 02, 2016
Equity [Abstract]
Common shares, authorized	65,000,000	65,000,000
Common shares, par value (in dollars per share)	$ 0.10	$ 0.1
Stock repurchased and retired during period, value	$ 0	$ 3,800,000	$ 46,300,000
Stock repurchased and retired during period, shares	0	144,600	1,568,731
Share-based Compensation
Increase in shareholders' equity as a result of stock options exercised	$ 0		$ 1,400,000
Stock Options
Share-based Compensation
Shares retired that were received by employees as payment for the exercise price of their stock options and taxes owed upon exercise of their stock options and release of their restricted awards (in shares)	87,679	96,929	65,209
Stock Awards
Share-based Compensation
Shares forfeited during period	14,033	16,391	958