Restructuring - Schedule of restructuring activity (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2023	Mar. 31, 2023	Mar. 31, 2021	Dec. 31, 2023
Restructuring Reserve [Roll Forward]
Accrued liability, beginning of period		$ 0		$ 0
Charges	$ 99,000	$ 42,000	$ 35,000	141,000
Payments				(39,000)
Accrued liability, end of period	$ 102,000			$ 102,000