Summary of Significant Accounting Policies - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Restructuring and related cost percent			7.00%
Restructuring charges	$ 1,100	$ 300	$ 2,600				$ 11,700
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense						Selling, General and Administrative Expense
Severance and related costs			4,300		$ 1,268	$ 4,211	$ 7,578
Accelerated equity compensation expense			$ 500	$ 2,200	$ 300		2,200
Write off of capitalized software development costs							1,200
Accelerated amortization expenses							$ 700