Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue
Total revenue	$ 10,425,000	$ 34,137,000
Operating expenses
Selling, general and administrative	10,274,000	8,755,000
Research and development	27,000	1,558,000
Total operating expenses	12,471,000	16,644,000
(Loss) income from operations	(2,046,000)	17,493,000
Other income (expense)
Interest expense	(2,402,000)	(2,609,000)
Gain on forgiveness of Paycheck Protection Program loan	2,325,000
Other income—related party	1,583,000	0
Other income (expense)	543,000	(448,000)
Total other income (expense), net	2,049,000	(3,057,000)
Income before income taxes	3,000	14,436,000
Provision for income taxes	1,000	18,000
Net income	$ 2,000	$ 14,418,000
Earnings per share
Basic	$ 0.00	$ 0.53
Diluted	$ 0.00	$ 0.42
Shares used in computing earnings per share
Basic	26,163	27,427
Diluted	32,916	34,183
Product Sales
Revenue
Revenue	$ 10,409,000	$ 8,637,000
Operating expenses
Cost of product sales, license revenue	2,165,000	2,731,000
License and Other Revenue
Revenue
Revenue	16,000	25,500,000
Operating expenses
Cost of product sales, license revenue	$ 5,000	$ 3,600,000