CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 9,324	$ 11,805
Restricted cash	779	839
Trade accounts receivable, net	3,506	2,925
Inventories, net	6,415	5,957
Prepaid expenses and other current assets	536	516
Total current assets	20,560	22,042
Property and equipment, net	6,536	6,810
Brand name and trademark	1,510	1,510
Purchased technology and license rights, net	269	323
Goodwill	185	185
Deposits	123	123
Deferred tax asset	21	25
Other assets	386	430
Total assets	29,590	31,448
Current liabilities:
Accounts payable	1,774	1,214
Accrued payroll	378	321
Accrued vacation	380	228
Current portion of mortgage note payable	239	239
Accrued and other liabilities	1,844	2,119
Total current liabilities	4,615	4,121
Mortgage note payable, net of current portion	2,814	2,934
Notes payable	140	140
Deferred rents	17	18
Deferred tax liability	564	564
Derivative liabilities	139	267
Total liabilities	8,289	8,044
Commitments and Contingencies (see Notes 9 and 10)
Stockholders' equity:
Series B convertible preferred stock, par value $.001; 3,588,139 issued and 1,975,639 outstanding as of June 30, 2016 and December 31, 2015, respectively	2	2
Common stock, par value $.001 par value; 40,000,000 shares authorized; 27,194,251 issued and 27,051,172 outstanding as of June 30, 2016 and December 31, 2015, respectively	27	27
Additional paid-in capital	43,219	42,859
Accumulated deficit	(21,947)	(19,484)
Total stockholders' equity	21,301	23,404
Total liabilities and stockholders' equity	$ 29,590	$ 31,448