CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 3,763	$ 3,928
Accounts receivable, net of allowance for doubtful accounts of $131 and $135, respectively	3,288	3,390
Inventories	2,670	2,817
Prepaid expenses and other current assets	804	617
Total current assets	10,525	10,752
Property and equipment, net	9,975	10,180
Intangible assets, net	13,858	13,412
Goodwill	8,803	8,803
Other assets	46	46
Total assets	43,207	43,193
Current liabilities:
Note payable	239	339
Current portion of long-term debt	2,571	1,714
Accounts payable	2,206	1,853
Other accrued liabilities	2,214	1,992
Deferred revenues	334	235
Total current liabilities	7,564	6,133
Long-term liabilities:
Long-term debt, net	8,948	9,752
Senior secured convertible debentures, net	12,695	12,028
Warrant liability	237	105
Deferred tax liability	419	359
Other liabilities	752	97
Total liabilities	30,615	28,474
Commitment and contingencies
Stockholders' equity:
Preferred Stock, $.10 par value, 10,000,000 shares authorized; 6,000 shares issued and outstanding	1	1
Common Stock, $.001 par value, 150,000,000 shares authorized; 2,181,898 and 2,166,898 shares issued and outstanding, respectively	2	2
Additional paid-in capital	225,397	225,289
Accumulated deficit	(212,810)	(210,575)
Accumulated other comprehensive income	2	2
Total stockholders' equity	12,592	14,719
Total liabilities and stockholders' equity	$ 43,207	$ 43,193