Accumulated other comprehensive loss 2 of 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassification	$ 15,017	$ 29,030
Amounts reclassified from other comprehensive loss to net income	$ (4,930)	$ 25,334