Organization And Summary Of Significant Accounting Policies (Schedule Of Basic Weighted Average Shares) (Details) - shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Organization And Summary Of Significant Accounting Policies Schedule Of Basic Weighted Average Shares
Basic and Diluted weighted average shares outstanding	46,337,198	46,863,467

Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

No definition available.

Name:	us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration