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Long Term Investments (Tables)
3 Months Ended
Mar. 31, 2013
Long-term Investments [Abstract]  
Long-term investments
Long-term investments accounted for at cost:

 
March 31, 2013
 
December 31, 2012
 
Carrying
 
Fair
 
Carrying
 
Fair
 
Value
 
Value
 
Value
 
Value
Investment partnerships
$
15,540

 
$
17,548

 
$
15,540

 
$
16,962

Real estate partnership
827

 
1,361

 
827

 
1,391

Investments accounted for at cost
$
16,367

 
$
18,909

 
$
16,367

 
$
18,353

Schedule of Equity Method Investments
Long-term investment partnerships accounted for under the equity method:
 
March 31,
2013
 
December 31,
2012
Investment partnerships
$
7,367

 
$
6,432