Organization and Summary of Significant Accounting Policies - Summary of Activity Product Returns and Discounts and Rebates (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Balance at December 31, 2018	$ 81
Provision	976
Payments/credits	(248)
Balance at December 31, 2019	809
Product Returns Allowance [Member]
Balance at December 31, 2018	33
Provision	752
Payments/credits	(64)
Balance at December 31, 2019	721
Discounts and Rebates Allowance [Member]
Balance at December 31, 2018	48
Provision	224
Payments/credits	(184)
Balance at December 31, 2019	88
Allowance for Doubtful Accounts [Member]
Balance at December 31, 2018	0
Provision	63
Payments/credits	0
Balance at December 31, 2019	$ 63