CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 18,389,977	$ 11,167,745
Marketable securities	11,918,020	15,421,436
Accounts receivable, less reserve for doubtful accounts of $10,000	7,636,346	2,825,414
Royalties receivable	3,962,704	3,206,840
Inventories, net	10,768,322	13,363,073
Prepaid expenses and other current assets	1,117,341	910,298
Total current assets	53,792,710	46,894,806
Property, plant and equipment, at cost:
Leasehold improvements	5,179,119	5,083,852
Equipment	12,648,183	12,011,154
Furniture and fixtures	1,763,973	1,244,451
Construction in progress	294,982	275,258
Total property, plant and equipment, at cost	19,886,257	18,614,715
Less: Accumulated depreciation	(9,769,919)	(7,877,296)
Property, plant and equipment, net	10,116,338	10,737,419
Long-term marketable securities	12,417,051	9,435,350
Intangible assets, net	7,376,533	7,795,239
Goodwill	994,000	994,000
Restricted cash	200,000	200,000
Total assets	84,896,632	76,056,814
Current liabilities:
Accounts payable	1,766,699	1,422,483
Accrued liabilities	7,269,086	6,041,038
Total current liabilities	9,035,785	7,463,521
Other long-term liabilities	1,900,102	2,469,412
Deferred tax liability	256,765	136,881
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 40,000,000 shares authorized, 31,054,765 shares at September 30, 2012 and 30,714,757 shares at December 31, 2011 issued and outstanding	310,548	307,148
Additional paid-in capital	186,500,090	184,872,839
Accumulated other comprehensive income	1,579,403	113,627
Accumulated deficit	(114,686,061)	(119,306,614)
Total stockholders' equity	73,703,980	65,987,000
Total liabilities and stockholders' equity	$ 84,896,632	$ 76,056,814