Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Outstanding Ordinary Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning Balance, Amount at Jan. 31, 2022	$ 547,176	$ 17	$ 447,287	$ 0	$ 99,872
Beginning Balance, Shares at Jan. 31, 2022		37,302,818
Issuance of shares through employee equity plans, Amount	8,589	$ 0	8,589	0	0
Issuance of shares through employee equity plans, Shares		736,516
Issuance of shares through employee stock purchase plan, Amount	3,250	$ 0	3,250	0	0
Issuance of shares through employee stock purchase plan, Shares		43,545
Stock-based compensation expense	26,155	$ 0	26,155	0	0
Net loss	(10,822)	0	0	0	(10,822)
Ending Balance, Amount at Apr. 30, 2022	574,348	$ 17	485,281	0	89,050
Ending Balance, Shares at Apr. 30, 2022		38,082,879
Beginning Balance, Amount at Jan. 31, 2022	547,176	$ 17	447,287	0	99,872
Beginning Balance, Shares at Jan. 31, 2022		37,302,818
Other comprehensive gain (loss) - net of tax	(1,043)
Net loss	(54,281)
Ending Balance, Amount at Oct. 31, 2022	588,398	$ 17	543,833	(1,043)	45,591
Ending Balance, Shares at Oct. 31, 2022		38,746,179
Beginning Balance, Amount at Apr. 30, 2022	574,348	$ 17	485,281	0	89,050
Beginning Balance, Shares at Apr. 30, 2022		38,082,879
Issuance of shares through employee equity plans, Amount	1,204	$ 0	1,204	0	0
Issuance of shares through employee equity plans, Shares		323,572
Stock-based compensation expense	26,211	$ 0	26,211	0	0
Other comprehensive gain (loss) - net of tax	(2)	0	0	(2)	0
Net loss	(23,650)	0	0	0	(23,650)
Ending Balance, Amount at Jul. 31, 2022	578,111	$ 17	512,696	(2)	65,400
Ending Balance, Shares at Jul. 31, 2022		38,406,451
Issuance of shares through employee equity plans, Amount	386	$ 0	386	0	0
Issuance of shares through employee equity plans, Shares		278,687
Issuance of shares through employee stock purchase plan, Amount	3,386	$ 0	3,386	0	0
Issuance of shares through employee stock purchase plan, Shares		61,041
Stock-based compensation expense	27,365	$ 0	27,365	0	0
Other comprehensive gain (loss) - net of tax	(1,041)	0	0	(1,041)	0
Net loss	(19,809)	0	0		(19,809)
Ending Balance, Amount at Oct. 31, 2022	588,398	$ 17	543,833	(1,043)	45,591
Ending Balance, Shares at Oct. 31, 2022		38,746,179
Beginning Balance, Amount at Jan. 31, 2023	$ 606,088	$ 18	572,076	(492)	34,486
Beginning Balance, Shares at Jan. 31, 2023	39,043,000	39,043,000
Issuance of shares through employee equity plans, Amount	$ 5,198	$ 0	5,198	0	0
Issuance of shares through employee equity plans, Shares		467,996
Issuance of shares through employee stock purchase plan, Amount	4,448	$ 0	4,448	0	0
Issuance of shares through employee stock purchase plan, Shares		80,207
Stock-based compensation expense	26,249	$ 0	26,249	0	0
Other comprehensive gain (loss) - net of tax	110	0	0	110	0
Net loss	(35,902)	0	0	0	(35,902)
Ending Balance, Amount at Apr. 30, 2023	606,191	$ 18	607,971	(382)	(1,416)
Ending Balance, Shares at Apr. 30, 2023		39,591,203
Beginning Balance, Amount at Jan. 31, 2023	$ 606,088	$ 18	572,076	(492)	34,486
Beginning Balance, Shares at Jan. 31, 2023	39,043,000	39,043,000
Other comprehensive gain (loss) - net of tax	$ (727)
Net loss	(108,810)
Ending Balance, Amount at Oct. 31, 2023	$ 591,788	$ 18	667,313	(1,219)	(74,324)
Ending Balance, Shares at Oct. 31, 2023	40,229,267	40,229,267
Beginning Balance, Amount at Apr. 30, 2023	$ 606,191	$ 18	607,971	(382)	(1,416)
Beginning Balance, Shares at Apr. 30, 2023		39,591,203
Issuance of shares through employee equity plans, Amount	553	$ 0	553	0	0
Issuance of shares through employee equity plans, Shares		279,568
Stock-based compensation expense	27,320	$ 0	27,320	0	0
Other comprehensive gain (loss) - net of tax	(548)	0	0	(548)	0
Net loss	(31,198)	0	0	0	(31,198)
Ending Balance, Amount at Jul. 31, 2023	602,318	$ 18	635,844	(930)	(32,614)
Ending Balance, Shares at Jul. 31, 2023		39,870,771
Issuance of shares through employee equity plans, Amount	334	$ 0	334	0	0
Issuance of shares through employee equity plans, Shares		286,684
Issuance of shares through employee stock purchase plan, Amount	3,486	$ 0	3,486	0	0
Issuance of shares through employee stock purchase plan, Shares		71,812
Stock-based compensation expense	27,649	$ 0	27,649	0	0
Other comprehensive gain (loss) - net of tax	(289)	0	0	(289)	0
Net loss	(41,710)	0	0	0	(41,710)
Ending Balance, Amount at Oct. 31, 2023	$ 591,788	$ 18	$ 667,313	$ (1,219)	$ (74,324)
Ending Balance, Shares at Oct. 31, 2023	40,229,267	40,229,267