Restructuring Costs and Other Expense (Income), Net (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Other Income (Expense) [Abstract]
Depreciation expense	$ 307,000
Pre-tax gain from sale of real estate		2,282,000	1,033,000
Proceeds from sale of other real estate			2,583,000
Curtailment gain on pension liability			219,000
Number of employees reduced due to restructuring			25
2011 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	408,000	0
Provision (reversal)	(67,000)	408,000
Usage	(256,000)
Currency translation	3,000
Balance at end of period	88,000	408,000
2008 Restructuring Plan [Member]
Restructuring Costs [Abstract]
Restructuring costs				4,373,000
Restructuring Reserve [Roll Forward]
Balance at beginning of period	354,000	433,000	1,334,000
Provision (reversal)	(8,000)		142,000
Usage	(182,000)	(94,000)	(1,060,000)
Currency translation	2,000	15,000	17,000
Balance at end of period	166,000	354,000	433,000	1,334,000
2009 Restructuring Plan [Member]
Restructuring Costs [Abstract]
Restructuring costs				3,858,000
Restructuring Reserve [Roll Forward]
Balance at beginning of period			2,302,000
Provision (reversal)			105,000
Usage			(2,233,000)
Currency translation			(174,000)
Balance at end of period			0	2,302,000
Employee Severance [Member] | 2011 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	408,000	0
Provision (reversal)	(67,000)	408,000
Usage	(256,000)
Currency translation	3,000
Balance at end of period	88,000	408,000
Employee Severance [Member] | 2008 Restructuring Plan [Member]
Restructuring Costs [Abstract]
Restructuring costs				4,059,000
Restructuring Reserve [Roll Forward]
Balance at beginning of period	354,000	433,000	1,334,000
Provision (reversal)	(8,000)		71,000
Usage	(182,000)	(94,000)	(989,000)
Currency translation	2,000	15,000	17,000
Balance at end of period	166,000	354,000	433,000	1,334,000
Employee Severance [Member] | 2009 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			2,302,000
Provision (reversal)			105,000
Usage			(2,233,000)
Currency translation			(174,000)
Balance at end of period			0
Other Cost [Member] | 2011 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	0
Provision (reversal)	0	0
Usage	0
Currency translation	0
Balance at end of period	0	0
Other Cost [Member] | 2008 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	0	0
Provision (reversal)	0		71,000
Usage	0	0	(71,000)
Currency translation	0	0	0
Balance at end of period	0	0	0
Other Cost [Member] | 2009 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			0
Provision (reversal)			0
Usage			0
Currency translation			0
Balance at end of period			$ 0
Papermaking Systems Segment [Member] | Employee Severance [Member] | 2008 Restructuring Plan [Member]
Other Income (Expense) [Abstract]
Number of employees reduced due to restructuring				329
Papermaking Systems Segment [Member] | Employee Severance [Member] | 2009 Restructuring Plan [Member]
Other Income (Expense) [Abstract]
Number of employees reduced due to restructuring				133
Papermaking Systems Segment [Member] | Employee Severance [Member] | CHINA [Member] | 2011 Restructuring Plan [Member]
Other Income (Expense) [Abstract]
Number of employees reduced due to restructuring		73