Organization And Summary Of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) segment entity shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Number of subsidiaries | entity	2
Foreclosed real estate	$ 0	$ 0
Other-than-temporary impairment charges	$ 0	0	$ 0
Number of reporting units with goodwill | segment	1
Goodwill impairment	$ 0	$ 0
Potentially dilutive shares of common stock | shares	76,632	72,320	77,620
Shares excluded from calculation of diluted earnings per share | shares	0	36,000	9,000
Standby Letters Of Credit [Member]
Maximum potential amount of future payments	$ 3,700,000	$ 3,800,000
Guaranty liabilities	$ 0	$ 0
Minimum [Member]
Properties and equipment estimated useful life	3 years
Maximum [Member]
Properties and equipment estimated useful life	39 years