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DSL Service Assurance Hardware Exit (Tables)
6 Months Ended
Jun. 30, 2012
Costs Associated With Exit [Abstract]  
Schedule of Exit cost activities
 
Balance
Balance
Balance
December
March
June
31, 2011
Expense
Utilization
31, 2012
Expense
Utilization
30, 2012
Exit costs
$ 0 $ 181 $ 104 $ 77 $ 101 - $ 178