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Restructuring Charges (Details 1) (2011 Severance Costs [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
2011 Severance Costs [Member]
   
Accrued severance reserves and the changes in the accruals    
Beginning Balance $ 53 $ 256
Assumption changes (22) (81)
Payments (14) (158)
Ending Balance $ 17 $ 17