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EMPLOYEE STOCK PLANS - Restricted Stock Units - (Details) (USD $)
3 Months Ended 12 Months Ended
Apr. 01, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   $ 1,565,000 $ 2,304,000 $ 2,744,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Time-based RSUs vesting percentage on each anniversary of the vesting commencement date   25.00%    
Restricted Stock Units
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   18,000 112,000 263,000
Number of Shares        
Outstanding at December 31, 2011 246,000 246,000    
Granted (in shares)   30,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 0.88    
Released (in shares)   (15,000)    
Expired (in shares)   (229,000)    
Outstanding at July 1, 2012   32,000 246,000  
Weighted Average Grant Date Fair Value        
Weighted Average Grant Date Fair Value, Outstanding at December 31, 2011 (in usd per share) 3.50 $ 3.50    
Weighted Average Grant Date Fair Value, Released (in usd per share)   $ 5.65    
Weighted Average Grant Date Fair Value, Expired (in usd per share)   $ 3.32    
Weighted Average Grant Date Fair Value, Outstanding at July 1, 2012 (in usd per share)   $ 1.28 $ 3.50  
Time-based Restricted Stock Units
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Common stock equivalent shares   1.75    
Performance-based Restricted Stock Units
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   0 0 0
Number of Shares        
Outstanding at December 31, 2011 200,000 200,000    
Expired (in shares) (200,000)      
Outstanding at July 1, 2012     200,000  
Employee Stock [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense   $ 20,000 $ 25,000 $ 39,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Shares issued in period   100,000 100,000 100,000