CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 49,958,339	$ 45,443,759
Accounts receivable, net of allowance for doubtful accounts of $237,138 as of March 31, 2014 and $202,207 as of December 31, 2013	3,657,421	4,502,344
Marketable securities	8,184,460	9,426,875
Other receivables, net	445,960	299,687
Prepaid expenses and other current assets	1,216,283	1,167,029
Restricted cash	139,750	139,750
Total current assets	63,602,213	60,979,444
Property and equipment, net of accumulated depreciation and amortization of $16,349,181 as of March 31, 2014 and $16,035,351 as of December 31, 2013	4,427,359	4,400,404
Marketable securities	1,500,000	3,670,860
Other assets	43,054	21,800
Goodwill	27,997,286	27,997,286
Other intangibles, net of accumulated amortization of $7,416,801 as of March 31, 2014 and $6,994,772 as of December 31, 2013	10,250,629	10,662,983
Restricted cash	1,161,250	1,161,250
Total assets	108,981,791	108,894,027
Current Liabilities:
Accounts payable	2,895,948	2,352,521
Accrued expenses	3,582,969	4,338,423
Deferred revenue	23,837,275	22,122,763
Other current liabilities	998,546	957,741
Total current liabilities	31,314,738	29,771,448
Deferred tax liability	288,000	288,000
Other liabilities	4,916,074	4,671,421
Total liabilities	36,518,812	34,730,869
Stockholders’ Equity
Preferred stock; $0.01 par value; 10,000,000 shares authorized; 5,500 issued and outstanding as of March 31, 2014 and December 31, 2013; the aggregate liquidation preference totals $55,000,000 as of March 31, 2014 and December 31, 2013	55	55
Common stock; $0.01 par value; 100,000,000 shares authorized; 41,383,501 shares issued and 34,357,273 shares outstanding as of March 31, 2014, and 41,058,246 shares issued and 34,044,339 shares outstanding as of December 31, 2013	413,835	410,582
Additional paid-in capital	273,426,423	273,861,536
Accumulated other comprehensive loss	(286,594)	(178,183)
Treasury stock at cost; 7,026,228 shares as of March 31, 2014 and 7,013,907 shares as of December 31, 2013	(12,398,243)	(12,364,460)
Accumulated deficit	(188,692,497)	(187,566,372)
Total stockholders’ equity	72,462,979	74,163,158
Total liabilities and stockholders’ equity	$ 108,981,791	$ 108,894,027