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Shareholders' Equity - Dividend Declared and Paid (Details) (USD $)
3 Months Ended 12 Months Ended 0 Months Ended
Mar. 30, 2013
Dec. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Oct. 01, 2011
Jul. 02, 2011
Mar. 30, 2013
Mar. 31, 2012
Apr. 02, 2011
Dec. 03, 2012
May 09, 2013
Subsequent event
Stockholders' Equity Note [Abstract]                          
Date Declared Feb. 07, 2013 Nov. 08, 2012 Aug. 09, 2012 May 10, 2012 Dec. 09, 2011                
Record Date Feb. 28, 2013 Nov. 21, 2012 Aug. 24, 2012 Jun. 04, 2012 Jan. 27, 2012                
Payment Date Mar. 14, 2013 Dec. 05, 2012 Sep. 10, 2012 Jun. 18, 2012 Feb. 17, 2012                
Amount per Share $ 0.08 $ 0.08 $ 0.08 $ 0.08 $ 0.08                
Special dividend per share declared                       $ 2.00  
Cash dividends paid to shareholders                 $ 68,077,000 $ 2,303,000 $ 0    
Subsequent Event [Line Items]                          
Dividends per outstanding common share - declared $ 0.08 $ 2.08 $ 0.08 $ 0.08 $ 0 $ 0.08 $ 0 $ 0         $ 0.08
Estimated dividends payable                         $ 2,400,000