Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 10,761	$ 16,629
Trade accounts receivable, less allowances of $42 and $236, respectively	3,595	5,640
Inventories, net	5,718	9,469
Prepaid and other current assets	596	882
Assets held for sale	225	0
Total current assets	20,895	32,620
Property and equipment, net	1,097	2,325
Other assets	159	33
Total assets	22,151	34,978
Current liabilities:
Accounts payable	1,630	3,257
Accrued liabilities	992	1,676
Deferred revenue	5	0
Total current liabilities	2,627	4,933
Other liabilities	232	107
Total liabilities	2,859	5,040
STOCKHOLDERS’ EQUITY
Preferred stock, par value $0.0001 per share: Authorized: 2,000,000 shares in 2016 and 2015 Issued and outstanding: no shares in 2016 and 2015	0	0
Common stock, par value $0.0001 per share: Authorized: 30,000,000 shares in 2016 and 2015 Issued and outstanding: 11,710,549 at December 31, 2016 and 11.648,978 at December 31, 2015	1	1
Additional paid-in capital	127,493	126,875
Accumulated other comprehensive loss	2	(1)
Accumulated deficit	(108,204)	(96,937)
Total stockholders' equity	19,292	29,938
Total liabilities and stockholders' equity	$ 22,151	$ 34,978