Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Details 1)

v3.6.0.2
Share-Based Compensation and Other Compensation Matters (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-Based Compensation      
Share-based compensation cost $ 7,453 $ 7,398 $ 7,050
General, adminstrative and leasing expenses [Member]      
Share-Based Compensation      
Share-based compensation cost 5,816 5,574 5,307
Property operating expenses [Member]      
Share-Based Compensation      
Share-based compensation cost 1,027 1,000 857
Capitalized to development activities [Member]      
Share-Based Compensation      
Share-based compensation cost $ 610 $ 824 $ 886