Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 14,184	$ 13,775
Marketable investments	21,728	40,299
Accounts receivable, net of allowance for doubtful accounts of $9 and $21, respectively	20,777	16,547
Inventories	28,782	14,977	[1]
Other current assets and prepaid expenses	2,903	2,251
Total current assets	88,374	87,849
Property and equipment, net	2,096	1,907
Deferred tax assets	19,055	377
Intangibles, net		2
Goodwill	1,339	1,339
Other long-term assets	374	380
Total assets	111,238	91,854
Current liabilities:
Accounts payable	7,002	2,598
Accrued liabilities	26,848	17,397
Deferred revenue	9,461	8,394
Total current liabilities	43,311	28,389
Deferred revenue, net of current portion	2,195	1,705
Income tax liability	379	168
Other long-term liabilities	460	582
Total liabilities	46,345	30,844
Commitments and contingencies (Note 12)
Stockholders’ equity:
Convertible preferred stock, $0.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: none
Common stock, $0.001 par value: Authorized: 50,000,000 shares; Issued and outstanding: 13,477,973 and 13,773,389 shares at December 31, 2017 and 2016, respectively	13	14
Additional paid-in capital	62,025	88,114
Retained earnings (accumulated deficit)	2,947	(27,046)
Accumulated other comprehensive loss	(92)	(72)
Total stockholders’ equity	64,893	61,010
Total liabilities and stockholders’ equity	$ 111,238	$ 91,854

[1] The Raw materials balance in prior year was reclassified for consistency with current year.