Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 220,647	$ 231,403
Marketable debt securities	190,056	173,345
Accounts receivable, net	23,275	18,487
Inventories	23,907	22,971
Restricted cash	10	9
Prepaid expenses and other current assets	3,503	4,975
Total current assets	461,398	451,190
Property and equipment, net	5,027	5,614
Deferred tax assets, non-current	10,212	10,400
Intangible assets, net	16,088	17,826
Operating lease right-of-use assets, net	8,691	9,935
Goodwill	26,601	26,601
Other non-current assets	5,381	5,710
Total assets	533,398	527,276
Current liabilities:
Accounts payable	13,693	14,910
Accrued and other current liabilities	33,156	34,970
Operating lease liabilities, current	2,402	2,181
Income taxes payable	511	691
Deferred revenue, current	1,400	701
Total current liabilities	51,162	53,453
Operating lease liabilities, non-current	6,911	7,975
Other long-term liabilities	16,678	17,776
Total liabilities	74,751	79,204
Commitments and contingencies (Note 13)	0	0
Shareholders' equity:
Preference shares, $0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at July 31, 2020 and January 31, 2020, respectively	0	0
Ordinary shares, $0.00045 par value per share, 200,000,000 shares authorized at July 31, 2020 and January 31, 2020, respectively; 34,610,836 shares issued and outstanding at July 31, 2020; 33,805,609 shares issued and outstanding at January 31, 2020	15	15
Additional paid-in capital	301,195	261,220
Accumulated other comprehensive income	1,587	768
Retained earnings	155,850	186,069
Total shareholders’ equity	458,647	448,072
Total liabilities and shareholders' equity	$ 533,398	$ 527,276