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Organization and Summary of Significant Accounting Policies Organization and Summary of Significant Accounting Policies - Share-Based Compensation (Details)
12 Months Ended
Dec. 31, 2018
$ / shares
Accounting Policies [Abstract]  
Volatility 47.71%
Risk-free interest rate 2.98%
Dividend rate 0.00%
Expected life of options 9 years 9 months 3 days
Weighted average fair value (in dollars per share) $ 38,640