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, 2013	Jun. 30, 2012
Accounting Policies [Abstract]
Total interest costs incurred	$ 30,326	$ 28,136
Interest capitalized	846	207
Interest expense	29,480	27,929
Cash paid for interest, net of amounts capitalized (including discontinued operations)	27,021	27,113
Cash paid for income taxes	585	954
Accounts payable and accrued liabilities for construction in progress	(1,407)	3,203
Acquisition of working capital deficit, net of cash	0	(190)
Reduction to capital for prepaid Offering costs	437	0
Accrued leasing commissions	$ 389	$ 0