Charges Related To Restructuring Activities Narrative (Details) (USD $)	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	$ 1,884,000	$ 2,592,000	$ 2,522,000	$ 6,998,000	$ 11,395,000	$ 10,534,000
Restructuring Reserve, Settled with Cash	3,625,000	2,183,000	4,022,000	9,830,000	9,381,000	5,555,000
Restructuring and Related Activities, Expected Payout Period				12 months
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	1,434,000	2,506,000	2,436,000		6,775,000	8,352,000
Restructuring Reserve, Settled with Cash	2,873,000	2,132,000	3,101,000		6,469,000	3,447,000
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	292,000	86,000	86,000		1,725,000	1,788,000
Restructuring Reserve, Settled with Cash	642,000	49,000	766,000		174,000	1,714,000
Product Line Discontinuance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	0	0	0		491,000	277,000
Restructuring Reserve, Settled with Cash	0	0	151,000		340,000	277,000
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	158,000	0	0		2,404,000	117,000
Restructuring Reserve, Settled with Cash	110,000	2,000	4,000		2,398,000	117,000
Europe [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	541,000	65,000	115,000		2,093,000	5,466,000
Restructuring Reserve, Settled with Cash	(41,000)	182,000	461,000		3,314,000	3,650,000
Europe [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	739,000	65,000	115,000		817,000	3,288,000
Restructuring Reserve, Settled with Cash	157,000	182,000	461,000		1,964,000	1,546,000
Europe [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	0	0	0		53,000	1,788,000
Restructuring Reserve, Settled with Cash	0	0	0		127,000	1,714,000
Europe [Member] | Product Line Discontinuance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	0	0	0		0	277,000
Restructuring Reserve, Settled with Cash	0	0	0		0	277,000
Europe [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	(198,000)	0	0		1,223,000	113,000
Restructuring Reserve, Settled with Cash	(198,000)	0	0		1,223,000	113,000
Asia Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	97,000	566,000	539,000		5,020,000	186,000
Restructuring Reserve, Settled with Cash	1,600,000	180,000	1,539,000		2,369,000	186,000
Asia Pacific [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	15,000	480,000	453,000		1,681,000	186,000
Restructuring Reserve, Settled with Cash	1,040,000	129,000	618,000		812,000	186,000
Asia Pacific [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	79,000	86,000	86,000		1,667,000	0
Restructuring Reserve, Settled with Cash	557,000	49,000	766,000		42,000	0
Asia Pacific [Member] | Product Line Discontinuance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	0	0	0		491,000	0
Restructuring Reserve, Settled with Cash	0	0	151,000		340,000	0
Asia Pacific [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	3,000	0	0		1,181,000	0
Restructuring Reserve, Settled with Cash	3,000	2,000	4,000		1,175,000	0
NA/HME [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	1,210,000	1,948,000	1,679,000		4,247,000	4,759,000
Restructuring Reserve, Settled with Cash	2,014,000	1,795,000	2,005,000		3,592,000	1,667,000
NA/HME [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	644,000	1,948,000	1,679,000		4,242,000	4,755,000
Restructuring Reserve, Settled with Cash	1,624,000	1,795,000	2,005,000		3,587,000	1,663,000
NA/HME [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	213,000	0	0		5,000	0
Restructuring Reserve, Settled with Cash	85,000	0	0		5,000	0
NA/HME [Member] | Product Line Discontinuance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	0	0	0		0	0
Restructuring Reserve, Settled with Cash	0	0	0		0	0
NA/HME [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges including Inventory Markdowns	353,000	0	0		0	4,000
Restructuring Reserve, Settled with Cash	$ 305,000	$ 0	$ 0		$ 0	$ 4,000