Quarterly report pursuant to Section 13 or 15(d)

Streamlining and Restructuring Charges (Details)

v2.4.0.6
Streamlining and Restructuring Charges (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]      
Number of positions eliminated     84
Number of positions eliminated (in hundredths)     34.00%
Number of positions eliminated immediately     52
Restructuring charges $ 17 $ 3,777  
Employee Severance and Other Benefits [Member]
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   2,100  
Asset Impairment and Accelerated Depreciation [Member]
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   $ 1,700