Consolidated Balance Sheets - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 6,490,000	$ 7,897,000
Marketable securities	19,994,000	12,971,000
Trade accounts receivable, net of allowance for doubtful accounts of $287 and $151, as of December 31, 2017 and 2016, respectively	4,005,000	4,364,000
Other current assets	2,438,000	906,000
Total current assets	32,927,000	26,138,000
Marketable securities, long term	14,883,000	25,597,000
Equity method investments	1,937,000	0
Fixed assets, net	7,272,000	6,234,000
Deferred tax asset	126,000	54,000
Other long-term assets	39,000	17,000
Total assets	57,184,000	58,040,000
Current liabilities
Accounts payable	2,089,000	2,756,000
Accrued liabilities	911,000	436,000
Income tax payable		124,000
Total current liabilities	3,000,000	3,316,000
Other long-term liabilities	6,000	2,000
Deferred tax liability		243,000
Total liabilities	3,006,000	3,561,000
Commitments and contingencies (Note 8)
Stockholders’ equity
Common stock, $0.0001 par value per share, 50,000 and 200,000 shares authorized, 17,847 and 17,676 shares issued and outstanding at December 31, 2017 and 2016, respectively.	2,000	2,000
Preferred stock, $0.0001 par value per share, 1,000 shares authorized, no shares issued or outstanding at December 31, 2017 and 2016
Additional paid-in capital	111,884,000	109,734,000
Accumulated other comprehensive income (loss)	(44,000)	(103,000)
Accumulated deficit	(57,664,000)	(55,154,000)
Total stockholders’ equity	54,178,000	54,479,000
Total liabilities and stockholders’ equity	$ 57,184,000	$ 58,040,000