Consolidated Statements of Comprehensive Income Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023	Mar. 31, 2022
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ 27	$ (5)	$ (56)	$ (49)	$ 22	$ (105)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	15,813		14,114	8,391	25,088	22,505
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(9,683)	2,901	(10,781)	(8,701)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	86	(176)	(1,509)	(812)	(90)	(2,375)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	208	(42)	(166)	(146)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			537
Stock Issued During Period, Value, Stock Options Exercised	265	225	206	415
Stock-based compensation		1,981		751	5,264	3,629
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 152	$ 1,805	$ 62	$ 1,313
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	19,653,000	87,496	31,313	52,276,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	9,556,000	8,485	9,531	18,907,000			133,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (265)	$ 541	$ 4,686	$ 2,689
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	853,998	846,957	784,384	775,181	853,998	784,384	$ 833,797	$ 772,803
All Other Individuals
Stock-based compensation	2,696		2,341
Director
Stock-based compensation	587
Retained Earnings
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	15,813	9,275	14,114	8,391	25,088	22,505
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	0	0	0	0
Stock-based compensation	0	0	0	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0	0	0	0
Retained Earnings | Director
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			0
Stock-based compensation	0
AOCI Attributable to Parent
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(9,683)	2,901	(10,781)	(8,701)	(6,782)	(19,482)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	208	(42)	(166)	(146)	166	(312)
Stock Issued During Period, Value, Stock Options Exercised	0	0	0	0
Stock-based compensation	0	0	0	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(265)	541	4,686	2,689	$ 276	$ 7,375
AOCI Attributable to Parent | Director
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			0
Stock-based compensation	0
Common Stock [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	0	0	0	0
Stock-based compensation	0	0	0	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	(1)	0	1
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0	0	0	0
Common Stock [Member] | Director
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			0
Stock-based compensation	0
Additional Paid-in Capital [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	265	225	206	415
Stock-based compensation	2,696	1,981	2,341	751
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	152	1,806	62	1,314
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0	0	0	$ 0
Additional Paid-in Capital [Member] | Director
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			$ 537
Stock-based compensation	587
Treasury Stock
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	0	0
Stock Issued During Period, Value, Stock Options Exercised	0	0
Stock-based compensation	0	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0	$ 0
Treasury Stock | Director
Stock-based compensation	$ 0