SEC Schedule, Article 12-09, Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Allowance for doubtful accounts, foreign currency translation gain			$ 700
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of the year	$ 5,577	$ 3,602	2,719
Net additions / (decreases) - charged to costs and expenses	2,559	2,961	3,941
Net additions / (decreases) - charged to other accounts	145	670	(403)
Deductions	(2,855)	(1,656)	(2,655)
Balance at end of the year	5,426	5,577	3,602
Allowance for doubtful accounts | Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-13
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of the year			300
Deferred taxation valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of the year	511	748	1,010
Net additions / (decreases) - charged to costs and expenses	349	19	64
Net additions / (decreases) - charged to other accounts	(266)	(4)	(131)
Deductions	53	(252)	(195)
Balance at end of the year	$ 647	$ 511	$ 748