Selling, General and Administrative Expenses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Selling, General and Administrative Expenses
Selling, general and administrative expenses	$ 189,218	$ 225,875	$ 215,059
Selling, general and administrative, stock-based compensation	27,034	62,875	54,261
Park
Selling, General and Administrative Expenses
Selling, general and administrative expenses	121,735	118,162	118,887
Corporate
Selling, General and Administrative Expenses
Selling, general and administrative expenses	$ 67,483	$ 107,713	$ 96,172