Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue
Total revenue	$ 75,720,000	$ 33,419,000
Operating expenses
Selling, general and administrative	35,386,000	38,428,000
Research and development	5,014,000	23,010,000
Total operating expenses	53,889,000	69,257,000
Income (loss) from operations	21,831,000	(35,838,000)
Other (expense) income
Interest expense	(10,458,000)	(10,051,000)
Interest income	7,000	235,000
Other income—related party	7,596,000	6,279,000
Other income (expense)	733,000	(46,000)
Total other (expense) income, net	(2,122,000)	(3,583,000)
Income (loss) before income taxes	19,709,000	(39,421,000)
Provision for income taxes	49,000	0
Net income (loss)	$ 19,660,000	$ (39,421,000)
Earnings (loss) per share
Basic	$ 0.72	$ (1.44)
Diluted	$ 0.58	$ (1.44)
Shares used in computing earnings (loss) per share
Basic	27,436	27,329
Diluted	34,179	27,329
Product Sales
Revenue
Revenue	$ 43,532,000	$ 33,419,000
Operating expenses
Cost of product sales, license revenue	8,976,000	$ 7,819,000
License and Other Revenue
Revenue
Revenue	32,188,000
Operating expenses
Cost of product sales, license revenue	$ 4,513,000