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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings per share
     Three Months Ended
     March 31,
     2013 2012
(Dollars and shares in thousands, except per share amounts)      
Basic earnings per share attributable to TDS shareholders:     
 Net income available to common shareholders of TDS used in basic earnings per share$ 1,407 $ 52,242
Adjustments to compute diluted earnings:     
 Noncontrolling interest adjustment  (28)   (345)
 Preferred dividend adjustment  -   12
 Net income attributable to common shareholders of TDS used in diluted earnings per share$ 1,379 $ 51,909
          
Weighted average number of shares used in basic earnings per share:     
  Common Shares  101,095   101,534
  Series A Common Shares  7,160   7,119
   Total  108,255   108,653
          
Effects of dilutive securities:     
 Stock options  112   202
 Restricted stock units  326   180
 Preferred shares  -   63
Weighted average number of shares used in diluted earnings per share  108,693   109,098
          
Basic earnings per share attributable to TDS shareholders$ 0.01 $ 0.48
          
Diluted earnings per share attributable to TDS shareholders$ 0.01 $ 0.48
Summary of antidilutive shares
  Three Months Ended
  March 31,
  2013 2012
(Shares in thousands)   
Stock options 6,672  4,301
     
Preferred shares 61  -