Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (4,413,722)	$ (6,040,611)	$ (3,169,560)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	31,824	45,212	34,963
Stock based compensation	1,042,917	2,914,904	984,537
Bad debts	131,250	81,198
Change in assets and liabilities:
Royalty receivables	(439,306)	(260,042)	(354,268)
Prepaid expenses and other current assets	2,866	94,544	(107,218)
Accounts payable and accrued expenses	345,356	(80,064)	(67,547)
Deferred revenue	(25,000)
Net cash used in operating activities	(3,323,815)	(3,244,859)	(2,679,093)
Cash flows from investing activities:
Purchases of fixed assets	(627,660)	(50,536)	(11,576)
Purchase of investments	(3,005,079)	(24,009)	(3,797,865)
Proceeds from sale of investments	5,076,930
Note and interest receivable on SPD Control Systems			224,903
Net cash provided by (used in) investing activities	1,444,191	(74,545)	(3,584,538)
Cash flows from financing activities:
Net proceeds from issuances of common stock and exercise of options and warrants	3,583,038	795,294	12,250,500
Net cash provided by financing activities	3,583,038	795,294	12,250,500
Net increase (decrease) in cash and cash equivalents	1,703,414	(2,524,110)	5,986,869
Cash and cash equivalents at beginning of year	5,866,123	8,390,233	2,403,364
Cash and cash equivalents at end of year	$ 7,569,537	$ 5,866,123	$ 8,390,233