COMMON STOCK AND STOCK PLANS - Share Repurchase (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013	Aug. 31, 2015	Apr. 30, 2015
Equity, Class of Treasury Stock [Line Items]
Treasury stock, acquried (in shares)	6,494,482	1,594,115	580,219
Treasury stock, acquired	$ 8,434	$ 7,603	$ 1,793
Share Repurchase Program 2015
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				$ 15,000	$ 7,000
Treasury stock, acquried (in shares)	6,100,000
Repurchase weighted average price (in dollars per share)	$ 1.28
Treasury stock, acquired	$ 7,800