Consolidated Income Statements (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Admissions advisory and related expenses to related parties	$ 953	$ 645	$ 2,574	$ 1,666