Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents of which $5,715,302 in 2012 and $5,215,349 in 2011 is interest bearing	$ 10,185,582	$ 10,114,163
Short term investments	15,379,011	15,023,999
Accounts receivable, net of allowances for doubtful accounts of $100,000 in 2012 and 2011 (including amounts from related party: 2012 - $1,622,278; 2011 - $1,760,304),	4,866,249	4,695,410
Inventories	3,706,702	3,635,730
Prepaid expenses and other current assets	503,731	667,927
Total current assets	34,641,275	34,137,229
Property and equipment, net	2,019,996	1,481,071
Other assets	38,878	464,286
TOTAL ASSETS	36,700,149	36,082,586
LIABILITIES AND SHAREHOLDERS'S EQUITY:
Accounts payable (including amounts due to related party; 2012 - $17,313; 2011 - $503,763)	2,183,304	3,526,171
Accrued expenses	2,431,629	3,016,596
Mandatorily Redeemable Preferred Stock, Fair Value Disclosure	550,000	600,000
Deferred revenue	0	93,750
Total current liabilities	5,164,933	7,236,517
Deferred revenue	36,760	46,416
Common stock warrant liability	2,769,277	8,168,846
TOTAL LIABILITIES	7,970,970	15,451,779
Preferred stock, $.01 par value;1,000,000 shares authorized
Series B convertible preferred stock, 130 shares issued and outstanding (liquidation preference of $13,000)	1	1
Series E convertible preferred stock, 22,740 shares issued and outstanding (liquidation preference of $2,274,000)	227	227
Common stock $.01 par value; 150,000,000 authorized; 87,543,781 and 87,367,313 shares issued in 2012 and 2011, respectively	875,437	873,673
Capital in excess of par value	278,695,861	278,060,138
Less cost of 36,448 treasury shares	(125,381)	(125,381)
Accumulated deficit	(250,996,822)	(258,282,753)
Accumulated other comprehensive income	279,856	104,902
Shareholders' equity	28,729,179	20,630,807
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 36,700,149	$ 36,082,586