Credit risk related to accounts receivables (Tables)

12 Months Ended

Mar. 31, 2020

As of March 31, 2019 and 2020, the aging analysis of accounts receivables is as follows (in thousands):


			Gross			Allowance for doubtful accounts			Net
2019
Not past due	$	12,455		$	(74)		$	12,381
Past due by 1 to 30 days	4,935			(131)			4,804
Past due by 31 to 60 days	1,831			(74)			1,757
Past due by more than 60 days	4,543			(2,440)			2,103
Total	$	23,764		$	(2,719)		$	21,045


			Gross			Allowance for doubtful accounts			Net
2020
Not past due	$	11,670		$	(366)		$	11,304
Past due by 1 to 30 days	7,309			(321)			6,988
Past due by 31 to 60 days	2,799			(158)			2,641
Past due by more than 60 days	5,924			(2,757)			3,167
Total	$	27,702		$	(3,602)		$	24,100

The movements in the allowance for doubtful accounts are as follows (in thousands):


	As of March 31,
	2019			2020

Opening balance		$	1,482		$	2,719
Adjustment on initial application of ASU 2016-13*					301
Opening balance – restated		1,482			3,020
Bad debt provision		2,098			3,941
Write-offs, net of recoveries**		(572)			(2,655)
Foreign currency translation differences		(289)			(704)
Closing balance		$	2,719		$	3,602

* Comparatives have not been restated

** Amounts written off are not subject to enforcement activity.