XML 91 R73.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments and Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable, net $ 153,829 $ 276,163
Mortgage and Other Notes Payable, net 1,424,409 1,488,718
Unsecured notes payable and Unsecured line of credit, net 473,735 432,990
Carrying Amount | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable, net 153,829 276,163
Mortgage and Other Notes Payable, net 909,174 1,055,728
Investment in non-traded equity securities 411 802
Carrying Amount | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unsecured notes payable and Unsecured line of credit, net 515,235 434,636
Estimated Fair Value | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable, net 151,712 272,052
Mortgage and Other Notes Payable, net 921,891 1,077,926
Investment in non-traded equity securities 22,824 25,194
Estimated Fair Value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unsecured notes payable and Unsecured line of credit, net $ 515,330 $ 435,779