Exit or Disposal Activities (Details Textual) (USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Exit or Disposal Activities (Textual) [Abstract]
Exit costs and severance costs charged to COGS and SG&A		$ 1,115
Adjustments to prior provisions for qualified exit costs	148	(223)	761
Facility Closing [Member]
Exit or Disposal Activities (Textual) [Abstract]
Exit costs and severance costs charged to COGS and SG&A		1,100
Adjustments to prior provisions for qualified exit costs		$ 300