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Stock-Based Compensation (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Stock-Based Compensation
Stock-based compensation expense	$ 3,500		$ 3,400		$ 6,200	$ 5,800
Proceeds from exercise of stock options					$ 789	$ 3,075
Common Stock
Stock-Based Compensation
Exercise of stock options (in shares)	25	41	72	268
Common Stock \| Employee Stock Purchase Plan
Stock-Based Compensation
Exercise of stock options (in shares)	200		300		400	700
Proceeds from exercise of stock options	$ 1,000		$ 1,100		$ 1,500	$ 3,600