CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 2,650,628	$ 3,523,948
Accounts receivable, net of allowance for doubtful accounts of $126,000 and $265,000, respectively	2,878,345	3,277,095
Inventories, net	7,551,597	6,141,179
Prepaid expenses and other current assets	943,491	671,192
Total current assets	14,024,061	13,613,414
Property and equipment, net	5,397,750	6,918,944
Patents and licensed technologies, net	6,352,093	6,813,528
Goodwill	19,569,200	19,569,200
Other intangible assets, net	1,558,350	1,688,352
Other assets	772,840	892,280
Total assets	47,674,294	49,495,718
Current liabilities:
Current portion of notes payable	408,384	77,796
Current portion of long-term debt	1,338,619	2,867,720
Accounts payable	4,468,172	2,801,568
Accrued compensation and related expenses	1,601,240	1,782,793
Accrued interest payable	739,577	699,025
Other accrued liabilities	2,504,555	1,765,523
Deferred revenues	728,689	496,443
Total current liabilities	11,789,236	10,490,868
Long-term liabilities:
Notes payable	0	13,817
Long-term debt	794,594	29,933
Convertible debt	20,506,507	19,344,136
Warrants related to convertible debt	2,249,033	938,623
Total liabilities	35,339,370	30,817,377
Stockholders' equity:
Common stock, $.01 par value, 35,000,000 shares authorized; 3,117,755 and 2,843,749 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	31,177	28,437
Additional paid-in capital	143,812,632	143,106,355
Accumulated deficit	(131,618,398)	(124,564,120)
Accumulated other comprehensive income	109,513	107,669
Total stockholders' equity	12,334,924	18,678,341
Total liabilities and stockholders' equity	$ 47,674,294	$ 49,495,718