CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 35,363,024	$ 39,829,653
Marketable securities	23,090,209	21,793,550
Accounts receivable, less reserve for doubtful accounts of $40,644 and $10,000 respectively	7,760,382	4,946,132
Royalties and other receivables	239,890	6,730,818
Inventories, net	12,383,633	11,798,638
Deferred tax asset, net	4,928	1,984
Prepaid expenses and other current assets	2,103,576	1,249,824
Total current assets	80,945,642	86,350,599
Property, plant and equipment, at cost:
Leasehold improvements	9,108,214	8,973,615
Equipment	13,115,630	13,684,954
Furniture and fixtures	2,270,347	2,116,017
Construction in progress	3,847,746	21,647
Total property, plant and equipment, at cost	28,341,937	24,796,233
Less: Accumulated depreciation	(13,815,697)	(12,287,010)
Property, plant and equipment, net	14,526,240	12,509,223
Long-term deferred tax asset, net		184,848
Long-term marketable securities	3,550,210	12,218,602
Intangible assets, net	14,636,307	6,187,632
Goodwill	14,184,835	994,000
Restricted cash	450,000	200,000
Total assets	128,293,234	118,644,904
Current liabilities:
Accounts payable	3,863,350	1,721,459
Accrued liabilities	6,819,063	9,579,712
Total current liabilities	10,682,413	11,301,171
Other long-term liabilities	5,879,013	3,457,631
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 80,000,000 shares authorized, 32,774,374 shares at December 31, 2014 and 31,925,741 shares at December 31, 2013 issued and outstanding	327,744	319,257
Additional paid-in capital	198,064,414	190,625,937
Accumulated other comprehensive income (loss)	(5,773,142)	1,998,330
Accumulated deficit	(80,887,208)	(89,057,422)
Total stockholders' equity	111,731,808	103,886,102
Total liabilities and stockholders' equity	$ 128,293,234	$ 118,644,904