Organization And Summary Of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) segment $ / shares shares	Dec. 31, 2015 USD ($) $ / shares
Organization And Summary Of Significant Accounting Policies [Line Items]
Held-to-maturity Securities, Unrecognized Holding Gain	$ 0	$ 0
Held-to-maturity Securities, Unrecognized Holding Loss	$ 0	0
Short-term investment, maturity date	Jul. 31, 2017
Interest income, net	$ 86,000	76,000
Advertising costs	46,000	22,000
Cash and cash equivalents	$ 11,730,000	9,600,000
Vesting period	1 year
Proceeds from issuance of common stock, net	$ 181,000	275,000
Other comprehensive income (loss)	$ (228,000)	(6,000)
Operating segments | segment	1
Disposal Group, Not Discontinued Operations [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Total sale price	$ 10,000
Cash payment	7,500
Gain on foreign subsidiary	$ 230,000	183,000
Sales Revenue, Net [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
A single customer accounts for 10% of revenue	12.00%
Software Licenses [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	2 years
Computer Equipment [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Furniture and Fixtures [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	4 years
Foreign [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 1,800,000	$ 3,400,000
Employee Stock Purchase Plan [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of shares available for Future Issuance | shares	92,207
Weighted-average fair value of the employee purchase right | $ / shares	$ 1.50	$ 1.40
Employee Stock Purchase Plan [Member] | Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Employee Stock Purchase Plan Purchase Price Percent Of Fair Value During Offerring Period	85.00%
Maximum employee subscription rate	15.00%
Maximum employee subscription amount	$ 25,000
Amended And Restated 2006 Equity Incentive Plan [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of shares authorized for future issuance | shares	1,223,824
Amended And Restated 2006 Equity Incentive Plan [Member] | Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Minmum stock option exercise price	100.00%
Number of shares subject to vesting that will become exercisable per year	20.00%
Amended And Restated 2006 Equity Incentive Plan [Member] | Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation contractual term	10 years
2000 Non-Officer Plan [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of shares authorized for future issuance | shares	106,666
Vesting period	2 years
Number of shares available for Future Issuance | shares	72,625
2000 Non-Officer Plan [Member] | Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Minmum stock option exercise price	85.00%
2000 Non-Officer Plan [Member] | Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation contractual term	10 years
Employee Stock Option [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of shares available for Future Issuance | shares	385,666
Expected dividend	0.00%	0.00%