Restructuring and Cost Reduction Programs (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Summary of accruals related to restructuring and cost reduction programs
Balance at December 31, 2011	$ 3,637
Restructuring charges	5,039
Cash payments	(823)
Non-cash items	93
Balance at June 30, 2012	7,760
Employee Severance [Member]
Summary of accruals related to restructuring and cost reduction programs
Balance at December 31, 2011	218
Restructuring charges	4,888
Cash payments	(321)
Non-cash items	42
Balance at June 30, 2012	4,827
Asset Impairment [Member]
Summary of accruals related to restructuring and cost reduction programs
Restructuring charges	64
Non-cash items	64
Other Costs [Member]
Summary of accruals related to restructuring and cost reduction programs
Balance at December 31, 2011	3,419
Restructuring charges	87
Cash payments	(502)
Non-cash items	71
Balance at June 30, 2012	$ 2,933