Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended		3 Months Ended			9 Months Ended		12 Months Ended
	Jan. 01, 2023	Apr. 05, 2016	May 31, 2023	Feb. 28, 2023	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation					$ 953	$ 731		$ 2,701	$ 6,711
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock remaining for future issuance (in shares)					192,079			192,079
Purchase price of common stock, percentage		85.00%
Maximum portion of earning an employee may contribute to the ESPP Plan		15.00%
Maximum annual amount of fair market value of the company's common stock that a participant may accrue the rights to purchase		$ 25
Shares of common stock for future issuance (in shares)		41,667
Automatic increase to shares authorized as percentage of outstanding stock at end of preceding year		1.00%
Increase in shares available (in shares)	41,667
Service-based options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation					$ 900			$ 2,600
Granted (in shares)								760,272
Outstanding intrinsic value					$ 0			$ 0
Options vested (in shares)								300,000
Weighted average exercise price (in dollars per share)					$ 12.78			$ 12.78
Fair value of options vested in period								$ 2,200
Compensation not yet recognized					$ 3,600			$ 3,600
Period for recognition								1 year 6 months
Exercisable stock options (in shares)					1,755,793			1,755,793		1,345,532
Weighted average share price (in dollars per share)					$ 14.47			$ 14.47		$ 28.24
Weighted average remaining contractual term								8 years 4 months 24 days		6 years 8 months 12 days
Service-based options \| Special Advisor To The Board
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation							$ 4,300
Service-based options \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year	4 years
Granted (in shares)			300,000	300,000
Market Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable stock options (in shares)					100,000			100,000
Weighted average share price (in dollars per share)					$ 39.53			$ 39.53
Weighted average remaining contractual term								8 months 12 days
Granted (in shares)								0
Exercise of stock options (in shares)								0
Forfeited (in shares)								0
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation					$ 48			$ 100
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual share reserve increase								4.00%
Increase in number of shares reserved for issuance (in shares)	377,221
Common stock remaining for future issuance (in shares)					51,284			51,284
2016 Plan \| Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period								10 years
2016 Plan \| Equity Option \| Maximum \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								3 years
2016 Plan \| Equity Option \| Maximum \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								4 years
2016 Plan \| Equity Option \| Minimum \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								1 year