Stock-Based Compensation - Equity Incentive Plans (Details) - shares		6 Months Ended
	Jun. 23, 2022	Jun. 30, 2022	Dec. 31, 2021
Class of Stock
Common stock options outstanding		5,274,668	5,202,006
Options outstanding under earlier plans		145,968
Grant of inducement stock option		325,000
2013 Stock Incentive Plan
Class of Stock
Common stock, shares reserved for future issuance	10,253,057
Common shares available for grant		4,648,994
Maximum number of additional common shares	155,968
Common stock options outstanding		4,803,700
Restricted stock units outstanding		548,491
Additional number of shares reserved for issuance	4,600,000
2017 Employee Stock Purchase Plan
Class of Stock
Common shares available for grant		720,067
Maximum number of additional common shares		600,000