CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 40,663	$ 9,949
Restricted cash	0	719
Short term investments	55,480	0
Trade accounts receivable, net of allowance of $311 and $204	4,139	4,857
Inventories, net	6,037	4,274
Prepaid expenses and other current assets	627	433
Current assets of discontinued operations	0	2,315
Total current assets	106,946	22,547
Property and equipment, net	5,842	6,033
Purchased technology and license rights, net	32	67
Goodwill	185	185
Deposits	46	92
Other assets	122	67
Non-current assets of discontinued operations	0	1,997
Total assets	113,173	30,988
Current liabilities:
Accounts payable	2,348	1,583
Accrued severance and related	95	1,242
Accrued payroll	163	447
Current portion of mortgage note payable	0	239
Accrued expenses and other current liabilities	19,830	214
Current liabilities of discontinued operations	0	2,248
Total current liabilities	22,436	5,973
Mortgage note payable, net of current portion	0	2,455
Related party note payable	140	140
Deferred tax liability	0	368
Derivative liabilities	0	20
Total liabilities	22,576	8,956
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value; 75,000,000 shares authorized; 33,763,019 issued and 33,620,444 outstanding as of September 30, 2018 and 75,000,000 shares authorized; 33,021,170 issued and 32,878,091 outstanding as of December 31, 2017, respectively	33	33
Additional paid-in capital	51,798	50,495
Retained earnings (accumulated deficit)	38,766	(28,496)
Total stockholders’ equity	90,597	22,032
Total liabilities and stockholders’ equity	$ 113,173	$ 30,988