Stock-Based Compensation and Employee Benefit Plans - Employee Stock Purchase Plan (Details) - 2018 ESPP - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock ownership plan (ESOP), compensation expense (reversal)	$ (1.1)	$ 6.5
Number of shares issued (in shares)	632,688	449,525
Number of additional shares authorized (in shares)	2,418,528	2,239,563
Number of common stock reserved for issuance (in shares)	16,990,424		15,204,584
Unrecognized stock-based compensation cost	$ 10.8		$ 8.8
Expense expected to be recognized over a weighted-average period	1 year 2 months 12 days		9 months 18 days