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Restructuring Costs and Other Income, Net (Details) (USD $)
 3 Months Ended 6 Months Ended 18 Months Ended 6 Months Ended 18 Months Ended 6 Months Ended 18 Months Ended 6 Months Ended 18 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Papermaking Systems [Member]
2013 Restructuring Plan [Member]
Jun. 29, 2013
Papermaking Systems [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
SWEDEN [Member]
2013 Restructuring Plan [Member]
Jun. 29, 2013
Papermaking Systems [Member]
CHINA [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Employee Severance [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Employee Severance [Member]
SWEDEN [Member]
2013 Restructuring Plan [Member]
Jun. 29, 2013
Papermaking Systems [Member]
Employee Severance [Member]
SWEDEN [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Employee Severance [Member]
SWEDEN [Member]
2013 Restructuring Plan [Member]
Employee
Jun. 29, 2013
Papermaking Systems [Member]
Employee Severance [Member]
BRAZIL [Member}
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Employee Severance [Member]
BRAZIL [Member}
2013 Restructuring Plan [Member]
Employee
Jun. 28, 2014
Papermaking Systems [Member]
Other Cost [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Other Cost [Member]
SWEDEN [Member]
2013 Restructuring Plan [Member]
Jun. 28, 2014
Papermaking Systems [Member]
Other Cost [Member]
BRAZIL [Member}
2013 Restructuring Plan [Member]
Restructuring Costs And Other Income and Expenses [Abstract]                                    
Restructuring Costs $ 66,000 $ 218,000 $ 394,000 $ 218,000                            
Pre-tax gain from sale of real estate                 1,740,000                  
Number of employees reduced due to restructuring                         25   22      
Restructuring Reserve [Roll Forward]                                    
Balance at beginning of period         467,000         467,000           0    
Provision         394,000 1,958,000 2,237,000 394,000   (11,000) 405,000 628,000 497,000 1,330,000 1,158,000 405,000 (11,000) 582,000
Usage         (773,000)         (370,000)           (403,000)    
Currency translation         (14,000)         (12,000)           (2,000)    
Balance at end of period         $ 74,000   $ 74,000     $ 74,000           $ 0