Restructuring and Other Exit Cots (Narratives) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2012 Restructuring Plan 2012 [Member]	Sep. 30, 2014 Restructuring Plan December 2013 [Member]	Dec. 31, 2013 Restructuring Plan December 2013 [Member]	Dec. 31, 2012 Employee Severance [Member] Restructuring Plan 2012 [Member]	Sep. 30, 2013 Employee Severance [Member] Restructuring Plan 2013 [Member]	Sep. 30, 2014 Employee Severance [Member] Restructuring Plan December 2013 [Member]	Dec. 31, 2013 Employee Severance [Member] Restructuring Plan December 2013 [Member]	Sep. 30, 2014 Fixed Assets Write Off [Member] Restructuring Plan December 2013 [Member]	Dec. 31, 2013 Fixed Assets Write Off [Member] Restructuring Plan December 2013 [Member]	Dec. 31, 2012 Other Costs [Member] Restructuring Plan 2012 [Member]	Sep. 30, 2014 Other Costs [Member] Restructuring Plan December 2013 [Member]	Dec. 31, 2013 Other Costs [Member] Restructuring Plan December 2013 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	$ 97	$ 96	$ 349	$ 51	$ 323	$ 469	$ 2,100	$ 312	$ 96	$ 199	$ 2,100	$ 13	$ 0	$ 11	$ 257	$ 0
Restructuring number of positions eliminated, percent							13.00%