Supplemental Cash Flow Information and Schedule of Non-Cash Investing and Financing Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Supplemental cash flow information [Abstract]
Cash paid for interest	$ 9,625	$ 10,311
Cash paid for income taxes	51	9
Supplemental schedule of non-cash investing and financing activity [Abstract]
Mortgage note payable transferred to purchaser	0	(163,497)
Restricted shares and deferred incentive share units issued (forfeited)	(287)	(274)
Stock Issued Pursuant to TPG Management Services Agreement	$ 75	$ 0