XML 46 R43.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies (Changes in Allowance for Doubtful Accounts) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Concentration Risk [Line Items]      
Balance at beginning of period $ 1,662 $ 3,342 $ 3,692
Charged to expense 116 210 272
Deductions (72) (1,863) (558)
Effect of foreign currency exchange rates 26 (27) (64)
Balance at end of period $ 1,732 $ 1,662 $ 3,342
Fastweb S.p.A. [Member] | Network Integration segment [Member] | Accounts Receivable [Member]
     
Concentration Risk [Line Items]      
Percentage of Accounts Receivable (excceds percentage) 10.00%    
Telecom Italia S.p.A. [Member] | Network Integration segment [Member] | Accounts Receivable [Member]
     
Concentration Risk [Line Items]      
Percentage of Accounts Receivable (excceds percentage)   10.00%