Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 15,912	$ 12,508	$ 23,618	$ 24,164
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(1,320)	4,913	(12,566)	14,030
Change in derivatives qualifying as hedges, net of taxes of $182, $44, $237, $(967)	(544)	(86)	(708)	1,878
Change in pension liability and postretirement obligation, net of taxes of $(9), $63, $(220), $604	26	(123)	634	(1,172)
Adjustments for unrealized gain (loss) on investments (See Note 6):
Unrealized holding gain (loss) arising during the period, net of taxes of $0, $(49), $0, $(97)	0	95	0	189
Total Adjustments	0	95	0	189
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	(1,838)	4,799	(12,640)	14,925
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 14,074	$ 17,307	$ 10,978	$ 39,089