Income Taxes (Details 1) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred Tax Assets:
Allowance for receivables	$ 42,861	$ 103,085
Deferred revenue	4,198,465us-gaap_DeferredTaxAssetsDeferredIncome	2,344,449us-gaap_DeferredTaxAssetsDeferredIncome
Share-based compensation	3,099,636	4,032,431
Accrued expenses and other liabilities	362,721us-gaap_DeferredTaxAssetsOther	559,495us-gaap_DeferredTaxAssetsOther
Domestic net operating loss carryforwards	23,386,049	22,553,301
Foreign net operating loss carryforwards	7,503	49,651
Tax credit carryforwards	574,998	581,046
AMT tax credit carryforwards	484,077	484,920
Capital loss carryforwards	75,607	79,140
Fixed assets	527,881	736,436
Intangibles	2,051,230	2,643,806
Sub-total	34,811,028us-gaap_DeferredTaxAssetsGross	34,167,760us-gaap_DeferredTaxAssetsGross
Valuation allowance	(34,625,398)	(33,870,014)
Total Deferred Tax Assets	185,630us-gaap_DeferredTaxAssetsNet	297,746us-gaap_DeferredTaxAssetsNet
Deferred Tax Liabilities:
Foreign withholding taxes	(111,291)	(101,713)
Total Deferred Tax Liabilities	(111,291)us-gaap_DeferredIncomeTaxLiabilities	(101,713)us-gaap_DeferredIncomeTaxLiabilities
Net Deferred Tax Assets	$ 74,339us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 196,033us-gaap_DeferredTaxAssetsLiabilitiesNet

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