Summary Of Significant Accounting Policies (Schedule of Differences Between Book Value and Tax Basis of Net Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract]
Financial statement basis of net assets	$ 7,213	$ 7,292	$ 8,850
Tax basis of net assets (unaudited)	8,900	7,751
Difference	$ (1,687)	$ (459)