SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Supplement Disclosures Related to Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Accounting Policies [Abstract]
Total interest costs incurred	$ 43,912	$ 45,692
Interest capitalized	3,516	1,448
Interest expense	40,396	44,244
Cash paid for interest, net of amounts capitalized	37,557	41,189
Cash paid for income taxes	319	868
Accounts payable and accrued liabilities for construction in progress	8,982	3,188
Accrued leasing commissions	(124)	488
Reduction to Capital for Prepaid Offering Costs	$ 0	$ 437