Consolidated Statement of Operations (Parentheticals) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
(1) Included in interest expense: credits for the change in the estimated fair value of interest rate swaps.	$ 153	$ 166	$ 506	$ 496