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Other Income (Expenses) (Tables)
 12 Months Ended
Dec. 31, 2013
Other Income and Expenses [Abstract]  
Principal components of other income (expense), net
The principal components of other income (expense), net are as follows (in thousands):
    
 
Year Ended December 31,
 
2013
 
2012
 
2011
Interest and investment income
$
148

 
$
336

 
$
1,621

Income tax expense
(645
)
 
(1,016
)
 
(831
)
Loss from real estate joint ventures
—

 
—

 
(188
)
Acquisition related expenses
—

 
(152
)
 
(434
)
Fee income from real estate joint ventures
—

 
—

 
44

Other non-operating income
10

 
203

 
—

Total other income (expense)
$
(487
)
 
$
(629
)
 
$
212