Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 31, 2015
Current assets:
Cash and cash equivalents	$ 268,056	$ 170,291
Marketable securities	39,837	37,703
Accounts receivable, net	39,408	40,180
Inventories	18,167	21,693
Restricted cash	7	8
Deferred tax assets, current	0	1,990
Prepaid expenses and other current assets	4,170	3,506
Total current assets	369,645	275,371
Property and equipment, net	3,448	3,075
Deferred tax assets, non-current	4,626	3,936
Intangible assets, net	4,178	0
Goodwill	26,601	0
Other assets	2,117	1,902
Total assets	410,615	284,284
Current liabilities:
Accounts payable	14,175	21,036
Accrued liabilities	23,778	18,699
Income taxes payable	787	748
Deferred tax liabilities, current	0	92
Deferred revenue, current	10,077	4,907
Total current liabilities	48,817	45,482
Deferred revenue, non-current	0	198
Other long-term liabilities	12,342	1,393
Total liabilities	61,159	47,073
Commitments and contingencies (Note 14)	0	0
Shareholders' equity:
Preference shares, $0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at January 31, 2016 and January 31, 2015, respectively	0	0
Ordinary shares, $0.00045 par value per share, 200,000,000 shares authorized at January 31, 2016 and January 31, 2015, respectively; 32,333,359 shares issued and outstanding at January 31, 2016; 30,837,529 shares issued and outstanding at January 31, 2015	15	14
Additional paid-in capital	176,306	140,564
Accumulated other comprehensive loss	(7)	(1)
Retained earnings	173,142	96,634
Total shareholders’ equity	349,456	237,211
Total liabilities and shareholders' equity	$ 410,615	$ 284,284