Organization And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	Dec. 31, 2011 segments	Dec. 31, 2011	Dec. 31, 2010
Accounting Policies [Abstract]
Number of Business Segments, Prior	2	2
Number of Segments	1	1
Equity Method Investment Ownership Percentage Acquired	21.10%	21.10%	21.10%
Business Acquisition, Cost of Acquired Entity, Purchase Price		$ 1,603,000
Line of Credit Facility, Maximum Borrowing Capacity		$ 450,000,000