CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 43,019,559	$ 44,077,751
Accounts receivable, net	18,966,543	16,092,836
Inventory, net	3,639,094	3,880,776
Prepaid expenses and other current assets	2,278,996	1,337,408
Total current assets	67,904,192	65,388,771
Property and equipment, net of accumulated depreciation	4,288,743	4,086,106
Goodwill	4,040,443	4,040,443
Intangible assets, net of accumulated amortization	11,115,188	11,178,573
Total assets	87,348,566	84,693,893
Current liabilities:
Accounts payable	2,618,753	2,490,531
Accrued compensation	5,413,595	5,588,811
Accrued expenses	1,369,048	1,405,974
Other current liabilities	192,522	122,551
Total current liabilities	9,593,918	9,607,867
Other liabilities	1,516,464	1,517,956
Total liabilities	11,110,382	11,125,823
Commitments and contingencies (Note 12)	0	0
Stockholders' equity:
Preferred stock; $.001 par value; 5,000,000 shares authorized and 0 shares issued and outstanding	0	0
Common stock; $.001 par value; 130,000,000 shares authorized; 105,843,137 issued and 105,793,137 outstanding as of March 31, 2014 and 104,425,614 issued and 104,375,614 outstanding as of December 31,2013	105,843	104,426
Additional paid-in capital	150,874,988	147,284,219
Treasury stock (50,000 shares at cost)	(25,000)	(25,000)
Accumulated deficit	(74,717,647)	(73,795,575)
Total stockholders' equity	76,238,184	73,568,070
Total liabilities and stockholders' equity	$ 87,348,566	$ 84,693,893