Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

Income Taxes (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Income Taxes (Additional Textual) [Abstract]        
Likelihood of being realized upon ultimate settlement   Greater than 50 percent likelihood of being realized upon ultimate settlement    
Material unrecognized tax benefits interest or penalties   $ 0    
Extension period 1 year      
Additional income taxes provided 0      
Effective tax rate   2.50% 9.10% (715.30%)
Change in valuation allowance   14,080,000 5,728,000 13,610,000
Impairment loss on intangible assets     5,100,000  
Annual usage limitation   135,000    
Amount of tax benefit of the federal and state NOL carryforwards which was created by the exercise of stock options   700,000    
Period of cumulative losses analysis.   3 years    
Valuation allowance   36,900,000    
Accrued expenses related to income taxes payable   25,000 93,000 95,000
WAG [Member]
Income Taxes (Textual) [Abstract]        
Net operating loss   2,700,000    
Period of adjusted loss position   3 years    
Tax holiday [Member]
Income Taxes (Textual) [Abstract]        
Decreased amount in foreign taxes   72,000 144,000 182,000
Federal [Member]
Income Taxes (Textual) [Abstract]        
Net operating loss   39,200,000    
Federal NOL carryforwards expire date   2029    
State [Member]
Income Taxes (Textual) [Abstract]        
Net operating loss   $ 53,936,000    
State NOL carryforwards expire date   2016