STOCK PLANS (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 30, 2012
RSUs
RSU's
Nonvested at the beginning of the period (in shares)	1,102,000
Granted (in shares)	472,650
Vested (in shares)	(320,000)
Forfeited (in shares)	(2,100)
Nonvested at the end of the period (in shares)	1,252,550
Weighted Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 2.98
Granted (in dollars per share)	$ 2.46
Vested (in dollars per share)	$ 4.08
Forfeited (in dollars per share)	$ 2.46
Outstanding at the end of the period (in dollars per share)	$ 2.50
Additional disclosures
Total fair value	$ 800,000
Stock options and SARs
Options/SARs
Outstanding at the beginning of the period (in shares)	6,511,500	6,194,500
Granted (in shares)	775,000
Exercised (in shares)	(387,000)
Forfeited (in shares)	(11,000)
Expired (in shares)	(60,000)
Outstanding at the end of the period (in shares)	6,511,500	6,194,500
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 11.45
Granted (in dollars per share)	$ 2.46
Exercised (in dollars per share)	$ 1.71
Forfeited (in dollars per share)	$ 3.17
Expired (in dollars per share)	$ 41.33
Outstanding at the end of the period (in dollars per share)	$ 10.69	$ 11.45
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	1,522,000	1,846,000
Exercised (in dollars)	$ 658,000