SHAREHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Income Per Share
Weighted-average number of common shares used in basic income per share	40,602	43,068	40,553	43,649
Dilutive securities - Restricted stock shares and restricted stock units	315	832	301	838
Weighted-average number of common shares and dilutive securities used in diluted income per share	40,917	43,900	40,854	44,487
Stock options
Stock-based Compensation
Options outstanding (in shares)		0		0
Restricted stock shares/units
Stock-based Compensation
Number of options or units that were excluded from the computation of diluted income per share	538		544
Stock options
Stock-based Compensation
Number of options or units that were excluded from the computation of diluted income per share	323		323