SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Supplement Disclosures Related to Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Accounting Policies [Abstract]
Total interest costs incurred	$ 29,121	$ 30,326
Interest capitalized	2,050	846
Interest expense	27,071	29,480
Cash paid for interest, net of amounts capitalized	25,244	27,021
Cash paid for income taxes	319	585
Accounts payable and accrued liabilities for construction in progress	656	(1,407)
Accrued leasing commissions	154	389
Reduction to Capital for Prepaid Offering Costs	$ 0	$ 437