Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (1,697,665)	$ (2,311,843)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	43,941	12,218
Stock-based compensation	125,930	329,067
Change in assets and liabilities:
Royalty receivables	(552,064)	(175,015)
Prepaid expenses and other current assets	26,596	71,476
Deferred revenue	22,722	(2,500)
Accounts payable and accrued expenses and other	(116,590)	167,873
Net cash used in operating activities	(2,147,130)	(1,908,724)
Cash flows from investing activities:
Purchases of fixed assets	(310,796)	(44,520)
Change in investments	(7,315)	(2,545)
Net cash used in investing activities	$ (318,111)	(47,065)
Cash flows from financing activities:
Net proceeds from sale of common stock		3,278,250
Net proceeds from exercise of options and warrants	$ 490,623	304,788
Net cash provided by financing activities	490,623	3,583,038
Net (decrease) increase in cash and cash equivalents	(1,974,618)	1,627,249
Cash and cash equivalents at beginning of year	7,569,537	5,866,123
Cash and cash equivalents at end of period	$ 5,594,919	$ 7,493,372