Condensed Consolidated Balance Sheets (unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 9,711,320	$ 5,624,860
Short-term investments	7,794,683	6,966,964
Accounts receivable	3,089,229	5,004,418
Income tax receivable	751,151	255,708
Deferred tax assets	110,010	94,992
Prepaid expenses and other current assets	382,745	326,519
Total current assets	21,839,138	18,273,461
Deferred royalty buy-down	3,247,554	3,350,000
Deferred tax assets - long term	1,375,525	1,412,784
Patent costs, net	307,907	215,999
Total assets	26,770,124	23,252,244
Current liabilities:
Accounts payable and accrued expenses	517,228	634,277
Deferred revenue	62,546	69,130
Accrued liabilities of discontinued operations	78,138	78,138
Total current liabilities	657,912	781,545
Long-term deferred revenue	97,934	138,260
Stockholders' equity:
Series A Preferred stock, $.50 par value, 700,000 shares authorized; none outstanding	0	0
Common stock, $.001 par value; 10,000,000 shares authorized ; 6,830,167 and 6,655,168 shares issued at September 30, 2014 and December 31, 2013, respectively	6,830	6,655
Additional paid-in capital	22,657,340	20,951,796
Retained earnings	7,701,737	4,975,018
Treasury stock, 329,455 and 300,739 shares at cost at September 30, 2014 and December 31, 2013, respectively	(4,351,629)	(3,601,030)
Total stockholders' equity	26,014,278	22,332,439
Total liabilities and stockholders' equity	$ 26,770,124	$ 23,252,244