Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Statement of Income and Comprehensive Income [Abstract]
Net income (loss)	$ 115,266	$ 113,055	$ (11,906)
Other comprehensive income (loss):
Foreign currency translation adjustment	1,651	19,070	34,325
Change in unrealized gain (loss) on derivatives	1,620	(7,864)	(9,195)
Comprehensive income	118,537	124,261	13,224
Comprehensive loss (income) attributable to the noncontrolling interests	(38)	1,819	19,913
Comprehensive income attributable to Entertainment Properties Trust	$ 118,499	$ 126,080	$ 33,137