CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 45,443,759	$ 23,845,360
Accounts receivable, net of allowance for doubtful accounts of $202,207 as of December 31, 2013 and $165,291 as of December 31, 2012	4,502,344	5,750,753
Marketable securities	9,426,875	18,096,091
Other receivables	299,687	1,134,142
Prepaid expenses and other current assets	1,167,029	1,450,742
Restricted cash	139,750
Total current assets	60,979,444	50,277,088
Property and equipment, net of accumulated depreciation and amortization of $16,035,351 as of December 31, 2013 and $14,633,037 as of December 31, 2012	4,400,404	5,672,000
Marketable securities	3,670,860	17,298,227
Other assets	21,800	69,957
Goodwill	27,997,286	25,726,239
Other intangibles, net of accumulated amortization of $6,994,772 as of December 31, 2013 and $6,699,283 as of December 31, 2012	10,662,983	11,190,557
Restricted cash	1,161,250	1,301,000
Total assets	108,894,027	111,535,068
Current Liabilities:
Accounts payable	2,352,521	3,813,955
Accrued expenses	4,338,423	5,921,152
Deferred revenue	22,122,763	21,080,759
Other current liabilities	957,741	632,618
Total current liabilities	29,771,448	31,448,484
Deferred tax liability	288,000	288,000
Other liabilities	4,671,421	4,340,749
Total liabilities	34,730,869	36,077,233
Stockholders’ Equity
Preferred stock; $0.01 par value; 10,000,000 shares authorized; 5,500 issued and outstanding as of December 31, 2013 and December 31, 2012; the aggregate liquidation preference as of December 31, 2013 and December 31, 2012 totals $55,000,000	55	55
Common stock; $0.01 par value; 100,000,000 shares authorized; 41,058,246 shares issued and 34,044,339 shares outstanding as of December 31, 2013, and 39,855,468 shares issued and 33,027,752 shares outstanding as of December 31, 2012	410,582	398,555
Additional paid-in capital	273,861,536	270,943,151
Accumulated other comprehensive loss	(178,183)	(128,994)
Treasury stock at cost 7,013,907 shares as of December 31, 2013 and 6,827,716 shares as of December 31, 2012	(12,364,460)	(11,974,261)
Accumulated deficit	(187,566,372)	(183,780,671)
Total stockholders’ equity	74,163,158	75,457,835
Total liabilities and stockholders’ equity	$ 108,894,027	$ 111,535,068