CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 3,417	$ 4,069
Accounts receivable, net of allowance for doubtful accounts of $171 and $172, respectively	2,491	3,141
Inventories	3,029	3,009
Prepaid expenses and other current assets	1,379	533
Total current assets	10,316	10,752
Property and equipment, net	6,916	7,703
Intangible assets, net	10,672	11,325
Goodwill	8,803	8,803
Other assets	48	48
Total assets	36,755	38,631
Current liabilities:
Note payable	252	357
Current portion of long-term debt	3,410	2,387
Accounts payable	2,658	2,277
Other accrued liabilities	2,216	2,360
Deferred revenues	440	291
Total current liabilities	8,976	7,672
Long-term liabilities:
Long-term debt, net	6,869	7,853
Deferred tax liability	454	414
Other liabilities	649	447
Total liabilities	16,948	16,386
Commitments and contingencies
Stockholders' equity:
Preferred Stock, $.10 par value, 10,000,000 shares authorized; 35,980 and 36,182 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	4	4
Common Stock, $.001 par value, 150,000,000 shares authorized; 4,379,425 and 4,304,425 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	4	4
Additional paid-in capital	251,662	251,643
Accumulated deficit	(231,863)	(229,406)
Total stockholders' equity	19,807	22,245
Total liabilities and stockholders' equity	$ 36,755	$ 38,631