Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 6,009	$ 4,430
Restricted cash	5	5
Accounts receivable, net	1,726	1,599
Inventories	1,268	1,015
Prepaid expenses and other current assets	377	298
Total current assets	9,385	7,347
Property, plant and equipment, net	310	176
Deferred income taxes	675
Intangibles, net	44	13
Other assets	57	26
Total assets	10,471	7,562
Current liabilities:
Accounts payable	324	484
Accrued liabilities	334	304
Accrued income taxes	104
Deferred revenue, current	111	71
Total current liabilities	873	859
Deferred revenue, long term		40
Total liabilities	873	899
Commitments and contingencies (See note 9)
Stockholders' equity:
Preferred stock, $0.01 par value: 1,000 shares authorized, no shares issued or outstanding
Common stock, $0.001 par value: 30,000 shares authorized, 7,328 and 7,326 shares issued and outstanding at December 31, 2016 and December 31, 2015, respectively	7	7
Additional paid-in-capital	60,370	60,251
Accumulated deficit	(50,708)	(53,601)
Accumulated other comprehensive (loss) income	(71)	6
Total stockholders' equity	9,598	6,663
Total liabilities and stockholders' equity	$ 10,471	$ 7,562