Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Outstanding Ordinary Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Beginning Balance, Amount at Jan. 31, 2020	$ 448,072	$ 15	$ 261,220	$ 768	$ 186,069
Beginning Balance, Shares at Jan. 31, 2020		33,805,609
Issuance of shares through employee equity plans, Shares		1,584,619
Issuance of shares through employee equity plans, Amount	15,684	$ 1	15,683	0	0
Issuance of shares through employee stock purchase plan, Amount	5,825		5,825
Issuance of shares through employee stock purchase plan, Shares		182,931
Stock repurchase, Amount	(1,000)	$ 0	(1,000)	0	0
Stock repurchase, Shares		(25,719)
Stock-based compensation expense	65,730	$ 0	65,730	0	0
Other comprehensive income (loss) - net of tax	451	0	0	451	0
Net loss	(59,786)	0	0	0	(59,786)
Ending Balance, Amount at Jan. 31, 2021	474,976	$ 16	347,458	1,219	126,283
Ending Balance, Shares at Jan. 31, 2021		35,547,440
Issuance of shares through employee equity plans, Shares		1,636,596
Issuance of shares through employee equity plans, Amount	12,195	$ 1	12,194	0	0
Issuance of shares through employee stock purchase plan, Amount	$ 7,208		7,208
Issuance of shares through employee stock purchase plan, Shares		118,782
Stock repurchase, Shares	0
Fair value of partially vested equity awards assumed in connection with acquisition	$ 407	$ 0	407	0	0
Stock-based compensation expense	80,020	0	80,020	0	0
Other comprehensive income (loss) - net of tax	(1,219)	0	0	(1,219)	0
Net loss	(26,411)	0	0	0	(26,411)
Ending Balance, Amount at Jan. 31, 2022	$ 547,176	$ 17	447,287	0	99,872
Ending Balance, Shares at Jan. 31, 2022	37,302,818	37,302,818
Issuance of shares through employee equity plans, Shares		1,635,596
Issuance of shares through employee equity plans, Amount	$ 11,409	$ 1	11,408	0	0
Issuance of shares through employee stock purchase plan, Amount	$ 6,636		6,636
Issuance of shares through employee stock purchase plan, Shares		104,586
Stock repurchase, Shares	0
Stock-based compensation expense	$ 106,745	$ 0	106,745	0	0
Other comprehensive income (loss) - net of tax	(492)	0	0	(492)	0
Net loss	(65,386)	0	0	0	(65,386)
Ending Balance, Amount at Jan. 31, 2023	$ 606,088	$ 18	$ 572,076	$ (492)	$ 34,486
Ending Balance, Shares at Jan. 31, 2023	39,043,000	39,043,000