CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 16,329,093	$ 5,850,224
Accounts receivable, net	1,321,329	1,430,997
Prepaid expenses and other current assets	1,656,634	1,804,610
Short-term investments	18,537,000	27,837,000
Total Current Assets	37,844,056	36,922,831
Long-term investments	4,527,763	4,626,763
Property and equipment, net	1,149,353	1,247,343
Intangible assets, net	2,563,855	2,518,041
Deferred income taxes, net	12,758,304	11,782,197
Total Assets	58,843,331	57,097,175
Current Liabilities
Accounts payable	1,123,574	556,342
Accrued liabilities	2,969,802	2,079,555
Deferred revenue	706,487	360,004
Total Current Liabilities	4,799,863	2,995,901
Commitments and contingencies (Note 4)
Stockholders' Equity
Preferred stock-$0.001 par value; 2,000,000 shares authorized; no shares issued and outstanding
Common stock-$0.001 par value; 56,000,000 shares authorized; 15,171,946 shares issued and 14,323,715 shares outstanding at March 31, 2012 and 15,154,926 shares issued and 14,306,695 shares outstanding at December 31, 2011	15,173	15,156
Additional paid-in capital	73,369,311	72,615,408
Treasury stock at cost, 848,231 shares at March 31, 2012 and December 31, 2011	(5,905,422)	(5,905,422)
Accumulated deficit	(13,435,594)	(12,623,868)
Total Stockholders' Equity	54,043,468	54,101,274
Total Liabilities and Stockholders' Equity	$ 58,843,331	$ 57,097,175