Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 32	$ 216	$ 238		$ 216
Charges		119		$ 460	119	$ 460
Payments/Settlements	$ (32)	(303)	(238)	(222)
Balance at end of period		32		238
Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	14	190	15		190
Charges		119		60
Payments/Settlements	(14)	(295)	(15)	(45)
Balance at end of period		14		15
Facility Costs And Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	18	$ 26	223		$ 26
Charges				400
Payments/Settlements	$ (18)	$ (8)	$ (223)	(177)
Balance at end of period		$ 18		$ 223