Organization and Summary of Significant Accounting Policies - Summary of Customer Allowances for Trade Promotions and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Trade promotions	$ 1,315	$ 943
Allowance for doubtful accounts	53	51
Trade promotions and allowance for doubtful accounts	$ 1,368	$ 994