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Organization and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($)
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Sublicense agreement $ 11,330,000 $ 0
Trademark license 6,030,000 0
Non-compete agreements 270,000 0
Accumulated amortization 0 0
Intangible assets, net $ 17,630,000 $ 0
Minimum | Licensing Agreements    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets useful life 11 years 1 month 6 days  
Maximum | Licensing Agreements    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets useful life 15 years