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Company and Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]  
Schedule Of Estimated Useful Lives Of Property Plant And Equipment [Table Text Block] Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows:
Computer Equipment3 years
Office Equipment
3 - 10 years
Furniture and Fixtures
5 - 10 years
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The Company used the following assumptions for stock options granted under the 2011 Equity Incentive Plans during the three and six months ended June 30, 2021 and 2020:
Three Months EndedSix Months Ended
2011 Equity Incentive Plans AssumptionsJune 30,
2021		June 30,
2020		June 30,
2021		June 30,
2020
Expected term6 years6 years6 years6 years
Weighted average volatility120.35%101.38%119.43%101.40%
Weighted average risk-free interest rate1.12%0.44%0.95%0.49%
Expected dividends————
Weighted average expected forfeiture rate10.23%8.21%13.89%8.5%