Discontinued Operations (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
	Nov. 14, 2011	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations [Abstract]
Pre-tax gain on sale of ownership interest	$ 27,100,000	$ 27,100,000		$ (27,085,000)
Proceeds from sale of business	49,800,000
Cumulative translation loss resulting from effects of foreign currency	2,800,000
Goodwill excluded from net assets transferred	$ 20,200,000
Lease expiration year			2019