Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 2,315,306	$ 2,693,623
Investments	30,000	30,000
Trade accounts receivable, less allowance for doubtful accounts of $6,000 on March 31, 2012 and December 31, 2011	1,177,629	878,600
Other receivables	331,010	13,712
Inventories, net	1,271,005	1,338,210
Prepaid expenses and other current assets	344,069	391,466
Total current assets	5,469,019	5,345,611
Equipment and leasehold improvements, net	3,498,098	3,713,082
Other assets, net	31,697	32,318
Total assets	8,998,814	9,091,011
LIABILITIES AND STOCKHOLDERS' EQUITY
Current portion of capital lease obligations	5,438
Deferred other revenue	279,000
Accounts payable	683,473	319,706
Accrued expenses	349,823	383,425
Accrued discount liability	85,815	116,103
Total current liabilities	1,403,549	819,234
Long-term portion of capital lease obligations	26,063
Long-term deferred rent	635,110	647,404
Asset retirement obligations	149,828	148,515
Total long-term liabilities	811,001	795,919
Stockholders' equity:
Preferred stock, $.01 par value, 24,088 shares authorized and no shares issued and outstanding
Common stock, $.01 par value, 35,000,000 shares authorized; 21,208,162 shares issued and outstanding on March 31, 2012 and December 31, 2011	212,082	212,082
Additional paid-in capital	93,153,507	93,070,979
Accumulated deficit	(86,581,325)	(85,807,203)
Total stockholders' equity	6,784,264	7,475,858
Total liabilities and stockholders' equity	$ 8,998,814	$ 9,091,011