Organization and Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at the beginning	$ 1,528	$ 2,290
Provision related to current period sales		7,627
Adjustment related to prior period sales	199	(362)
Credit or payments made during the period	(466)	(8,027)
Balance at the end	1,261	1,528
Chargebacks, Discounts and Fees
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at the beginning	375	992
Provision related to current period sales		6,402
Adjustment related to prior period sales	116	(81)
Credit or payments made during the period	(264)	(6,938)
Balance at the end	227	375
Government and Other Rebates
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at the beginning	292	352
Provision related to current period sales		704
Adjustment related to prior period sales	121	168
Credit or payments made during the period	(202)	(932)
Balance at the end	211	292
Returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at the beginning	861	946
Provision related to current period sales		521
Adjustment related to prior period sales	(38)	(449)
Credit or payments made during the period		(157)
Balance at the end	$ 823	$ 861
TRC
Movement in Valuation Allowances and Reserves [Roll Forward]
Percentage of equity interest	85.00%