Stock-Based Compensation - Plan Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock based compensation
Compensation expense	$ 10.7	$ 15.5	$ 15.6
Director
Stock based compensation
Common shares granted to members of board of directors as compensation for director services	15,923	17,912	21,545
2012.
Stock based compensation
Number of additional awards permissible under the plan	0
2020 Plan
Stock based compensation
Number of awards approved for grant (in shares)	3,650,000
Common stock remaining available for issuance (in shares)	1,416,696