Supplemental Cash Flow Information and Schedule of Non-Cash Investing and Financing Activity (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental cash flow information:
Cash paid for interest	$ 19,939	$ 19,689
Cash paid for income taxes	76	1,120
Supplemental schedule of non-cash investing and financing activity:
Mortgage note payable transferred to purchaser	0	(224,498)
Stock options, profits interest units, restricted shares and deferred incentive share units issued	(287)	(654)
Shares issued pursuant to TPG Management Services Agreement	200	75
Shares issued in lieu of Director's fees	220	263
Operating partnership unit converted to common stock	$ 0	$ 15,112