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Stock Repurchase (Details) (USD $)
 1 Months Ended 12 Months Ended
Sep. 28, 2013
Mar. 28, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 28, 2012
Sep. 21, 2012
Stock Repurchase (Textual) [Abstract]              
Stock repurchase in cash     $ 25,432,000 $ 4,778,000 $ 3,415,000    
Stock repurchase from issued shares of series A nonconvertible     0 0      
Stock Repurchase (Additional Textual) [Abstract]              
Repurchase common stock held by promoter, one   2,485,929          
Repurchase common stock held by promoter, two   500,000          
Repurchase share price per share   $ 20          
Total consideration   59,700,000          
Non-Voting Redeemable Preferred Stock with a liquidation preference     $ 1,000        
Professional and legal fees   514,000          
Redemption of outstanding shares of Series A Nonconvertible, Non-Voting Redeemable Preferred Stock             34,800,000
Decrease in dividend obligation after redemption of preferred stock           870,000  
Dividend rate on preferred stock paid semi annually 5.00%            
Series A Nonconvertible Non Voting Redeemable Preferred Stock [Member]
              
Stock Repurchase (Textual) [Abstract]              
Stock repurchase from issued shares of series A nonconvertible     34,800        
Cash [Member]
              
Stock Repurchase (Textual) [Abstract]              
Stock repurchase in cash     $ 24,900,000