Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 3)

v3.4.0.3
Fair Value Measurements (Details 3) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Assets and liabilities measured at fair value on a non-recurring basis    
Impairment losses $ 2,446 $ 0
Fair value measurement on a recurring basis    
Assets and liabilities measured at fair value on a non-recurring basis    
Assets 5,671  
Assets Held For Sale | Fair value measurement on a nonrecurring basis    
Assets and liabilities measured at fair value on a non-recurring basis    
Assets 14,886  
Assets Held For Sale | Fair value measurement on a nonrecurring basis | Significant Unobservable Inputs (Level 3)    
Assets and liabilities measured at fair value on a non-recurring basis    
Assets 14,886  
Colorado Springs | Real Estate Investment Properties, Net | Fair value measurement on a nonrecurring basis    
Assets and liabilities measured at fair value on a non-recurring basis    
Impairment losses 1,600  
White Marsh, Maryland | Real Estate Investment Properties, Net | Fair value measurement on a nonrecurring basis    
Assets and liabilities measured at fair value on a non-recurring basis    
Impairment losses $ 847