- Summarized Statements of Operations for Unconsolidated Investments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments in and Advances to Affiliates [Line Items]
Total expenses	$ 130,479	$ 137,262	$ 532,092
Net loss	4,966	5,990	(330,308)
Statements Of Operations
Investments in and Advances to Affiliates [Line Items]
Total expenses	1,014	1,042	1,031
Net loss	$ 1,014	$ 1,042	$ 1,031