Annual report pursuant to Section 13 and 15(d)

Employee Benefits (Details Textual)

v2.4.0.6
Employee Benefits (Details Textual) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Mar. 31, 2012
Employee Stock Ownership Plan [Member]
Mar. 31, 2011
Employee Stock Ownership Plan [Member]
Dec. 29, 2012
Employee Stock Ownership Plan [Member]
Dec. 31, 2011
Employee Stock Ownership Plan [Member]
Jan. 01, 2011
Employee Stock Ownership Plan [Member]
Mar. 31, 2012
United Kingdom [Member]
Mar. 31, 2011
United Kingdom [Member]
Jun. 30, 2012
Germany [Member]
Dec. 29, 2012
Germany [Member]
Employee Benefits (Textual) [Abstract]                        
Company contributed shares into ESOP       132,398 84,974              
Dividend declared percentage on wages           10.50%            
Retirement benefit expense under the ESOP           $ 3,011 $ 3,849 $ 2,255        
Shares issued, shared distribution, Shares                 13,977 8,061 13,284  
Distribution paid in cash                       50.00%
Distribution paid in kind of shares                       50.00%
Employee Benefits (Additional Textual) [Abstract]                        
Employer contribution under Retirement plan 4,309 5,026 3,304                  
Supplemental pension benefits 330 336 353                  
Company Funded percentage 100.00%                      
Foreign operations recognized expense 633 795 483                  
Recognized compensation expenses $ 44 $ 45 $ 45