Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income (loss)	$ (4,104)	$ 16,599	$ (7,073)	$ 35,178
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	6,631	(8,470)	9,433	(7,075)
Change in derivatives qualifying as hedges, net of taxes of $(24), $69, $(20), $322	82	(206)	69	(964)
Change in pension liability and postretirement obligation, net of taxes of $(2,817), $(96), $(3,339), $(62)	10,071	282	11,940	183
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	16,784	(8,394)	21,442	(7,856)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 12,680	$ 8,205	$ 14,369	$ 27,322