Income Taxes (Details 1) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets:
Allowance for receivables	$ 103,085	$ 350,738
Deferred revenue	2,344,449	3,104,017
Share-based compensation	4,032,431	6,236,175
Accrued expenses and other liabilities	559,495	669,844
Domestic net operating loss carryforwards	22,553,301	16,526,224
Foreign net operating loss carryforwards	49,651	405,818
Tax credit carryforwards	581,046	654,966
AMT tax credit carryforwards	484,920	485,817
Capital loss carryforwards	79,140	80,055
Fixed assets	736,436	957,107
Intangibles	2,643,806	3,195,185
Sub-total	34,167,760	32,665,946
Valuation allowance	(33,870,014)	(32,186,965)
Total Deferred Tax Assets	297,746	478,981
Deferred Tax Liabilities:
Foreign withholding taxes	(101,713)	(96,360)
Total Deferred Tax Liabilities	(101,713)	(96,360)
Net Deferred Tax Assets	$ 196,033	$ 382,621