Restructuring and Integration Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	$ 3,779
Restructuring and integration costs [Abstract]
Amount provided for during 2013	418
Cash payments	(475)
Exit activity liability, end of period	3,722
Workforce Reduction [Member]
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	2,226
Restructuring and integration costs [Abstract]
Amount provided for during 2013	406
Cash payments	(260)
Exit activity liability, end of period	2,372
Other Exit Costs [Member]
Restructuring and integration activities [Roll Forward]
Exit activity liability, beginning of period	1,553
Restructuring and integration costs [Abstract]
Amount provided for during 2013	12
Cash payments	(215)
Exit activity liability, end of period	$ 1,350