Investments (Tables)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Equity Method Investments and Joint Ventures [Abstract]    
Equity Method Investments [Text Block]
 Investments consisted of the following at June 30, 2012, and December 31, 2011 (in thousands):
             
   Accounting  Percent  June 30,  December 31,
   Method  Ownership  2012  2011
 The Detroit Legal News Publishing, LLC Equity  35.0% $ 10,923 $ 11,334
 Other Equity  19.5%   539   567
  Total      $ 11,462 $ 11,901
             
  As of June 30, As of December 31,
  2012 2011
Carrying value of investment$10,923 $11,334
Underlying finite-lived customer list, net of amortization 5,152  5,906
             
Realized Gain (Loss) on Investments [Table Text Block]
             
 For the three and six months ended June 30, 2012, and 2011 , the equity (loss) in earnings of affiliates is as
 follows (in thousands):           
   Three Months Ended  Six Months Ended
   June 30,  June 30,
   2012  2011  2012  2011
 The Detroit Legal News Publishing, LLC$ 609 $ 459 $ 1,051 $ 1,216
 Other  (10)   (18)   (27)   (27)
  Total$ 599 $ 441 $ 1,024 $ 1,189

             
  Three Months Ended Six Months Ended
  June 30, June 30,
  2012 2011 2012 2011
Equity in earnings of DLNP, net of amortization            
 of customer list$609 $459 $1,051 $1,216
Distributions received 763  700  1,463  2,100
Amortization expense 377  377  754  754