v3.3.1.900
Supplemental Cash Flow Information of the Company (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other Significant Noncash Transactions [Line Items]      
Interest Paid, Net $ 54,747 $ 58,944 $ 65,157
Capital Expenditures Incurred but Not yet Paid 109,715 77,091 73,482
Tenant improvements funded directly by tenants to third parties 13,837 42,906 7,633
Noncash or Part Noncash Acquisition, Debt Assumed 0 0 95,496
Noncash or Part Noncash Acquisition, Other Liabilities Assumed 6,254 14,917 1,811
Release of Holdback Funds to Third Party 9,279 0 0
Noncash or Part Noncash Acquisition, Land Contributed, Net of Liabilities Assumed 0 0 (4,885)
Common Stockholders And Unitholders Dividends And Distributions Declared But Not Paid (33,336) (31,243) (29,378)
Preferred Stockholders And Unitholders Dividends And Distributions Declared But Not Paid 1,656 1,656 1,694
purchase price, value of shares issued to acquire land 0 21,631 0
Conversion of Stock, Amount Converted $ 1,223 $ 28 $ 450