Consolidated Statements of Cash Flows (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net loss	$ (1,216,377)us-gaap_NetIncomeLoss	$ (1,169,985)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	8,617	6,075
Stock-based compensation	67,963us-gaap_ShareBasedCompensation	73,256us-gaap_ShareBasedCompensation
Change in assets and liabilities:
Royalty receivables	20,776	6,732
Prepaid expenses and other current assets	42,479	43,937
Deferred revenue	32,722	31,250
Accounts payable and accrued expenses	(66,058)	202,533
Net cash used in operating activities	(1,109,878)	(806,202)
Cash flows from investing activities:
Purchases of fixed assets	(176,224)	(43,245)
Change in investments	(2,382)	(1,040)
Net cash used in investing activities	(178,606)	(44,285)
Cash flows from financing activities:
Net proceeds from exercise of options and warrants	245,873	82,288
Net cash provided by financing activities	245,873	82,288
Net decrease in cash and cash equivalents	(1,042,611)	(768,199)
Cash and cash equivalents at beginning of year	7,569,537	5,866,123
Cash and cash equivalents at end of year	$ 6,526,926	$ 5,097,924

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.