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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for doubtful accounts
      
Changes in valuation and qualifying accounts      
Balance at beginning of period $ 10,796 $ 30,145 $ 32,176
Charged (credited) to costs and expenses (75) (1,148) 2,161
(Deductions) Adjustments 342 (576) (4,192)
Balance at end of period 11,063 10,796 30,145
Allowance for doubtful accounts | IPTV divestiture
      
Changes in valuation and qualifying accounts      
(Deductions) Adjustments   (17,625)  
Tax valuation allowance
      
Changes in valuation and qualifying accounts      
Balance at beginning of period 418,285 469,224 473,914
Charged (credited) to costs and expenses 36,324 (30,745) (3,877)
Charged (credited) to other accounts (31,820) (20,194) (813)
Balance at end of period $ 422,789 $ 418,285 $ 469,224