Noncontrolling Interests In Subsidiaries (Changes Of Noncontrolling Interests In Subsidiaries) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 04, 2013	Jan. 05, 2012
Noncontrolling Interests In Subsidiaries [Abstract]
Balance, Beginning	12,197,122	13,007,668	13,495,036	12,141,836	12,197,122
Redemption of common units for shares of common stock	(55,286)	(810,546)	(487,368)
Balance, Ending	12,141,836	12,197,122	13,007,668	12,141,836	12,197,122