Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 25,441	$ 34,640
Trade accounts receivable less allowances of $88 and $155, respectively	5,186	10,110
Inventories, net	14,594	7,732
Prepaid and other current assets	1,704	740
Total current assets	46,925	53,222
Property and equipment, net	3,139	2,429
Other assets	42	51
Total assets	50,106	55,702
Current liabilities:
Accounts payable	7,470	7,295
Accrued liabilities	997	355
Accrued payroll and related benefits	645	1,243
Accrued sales commissions	395	1,005
Accrued warranty reserve	298	314
Deferred revenue	67	93
Total current liabilities	9,872	10,305
Other liabilities	101	77
Total liabilities	9,973	10,382
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: 11,690,030 at June 30, 2016 and 11,648,978 at December 31, 2015	1	1
Additional paid-in capital	126,086	125,369
Accumulated other comprehensive income	1	0
Accumulated deficit	(85,955)	(80,050)
Total stockholders' equity	40,133	45,320
Total liabilities and stockholders' equity	$ 50,106	$ 55,702