XML 97 R33.htm IDEA: XBRL DOCUMENT v2.4.0.8
Basis of Presentation (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Schedule of Equity Method Investments [Line Items]        
Reclassified from other income (expense) to equity in earnings $ 471,000 $ 284,000 $ 753,000 $ 438,000
Minimum [Member] | Majority-owned Subsidiaries [Member]
       
Schedule of Equity Method Investments [Line Items]        
Percentage of ownership, equity method (in hundredths) 20.00%   20.00%  
Maximum [Member] | Majority-owned Subsidiaries [Member]
       
Schedule of Equity Method Investments [Line Items]        
Percentage of ownership, equity method (in hundredths) 50.00%   50.00%