v2.4.0.6
Notes Receivable Backed by Real Estate (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Property
Summary of notes receivable backed by real estate    
Beginning balance $ 322,834  
Elimination upon acquisition of NAIF II (78,864)  
Accrued interest, (interest payments received), net 1,684  
Ending balance 245,654  
Purchased debt securitized by properties   12
$188 million Preferred Equity Interest [Member]
   
Summary of notes receivable backed by real estate    
Beginning balance 188,000  
Accrued interest, (interest payments received), net 1,694  
Ending balance 189,694  
$55 million preferred equity interest [Member]
   
Summary of notes receivable backed by real estate    
Beginning balance 55,970  
Accrued interest, (interest payments received), net (10)  
Ending balance 55,960  
NAIF II Secured Mortgage Receivable [Member]
   
Summary of notes receivable backed by real estate    
Beginning balance 78,864  
Elimination upon acquisition of NAIF II $ (78,864)