Intangible Assets (Details) (USD $)	0 Months Ended
Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015	Dec. 31, 2014
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Gross Carrying Amount	$ 19,016,835	$ 19,016,835	$ 19,016,835	$ 19,016,835
Accumulated amortization	(18,134,960)	(17,526,516)	(18,134,960)	(17,526,516)
Total	881,875us-gaap_FiniteLivedIntangibleAssetsNet	1,490,319us-gaap_FiniteLivedIntangibleAssetsNet	881,875us-gaap_FiniteLivedIntangibleAssetsNet	1,490,319us-gaap_FiniteLivedIntangibleAssetsNet
Acquired technology
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	8 years	8 years
Gross Carrying Amount	17,696,835	17,696,835	17,696,835	17,696,835
Accumulated amortization	(17,107,377)	(16,539,683)	(17,107,377)	(16,539,683)
Total	589,458	1,157,152	589,458	1,157,152
Customer relationships
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	8 years	8 years
Gross Carrying Amount	1,260,000	1,260,000	1,260,000	1,260,000
Accumulated amortization	(1,015,583)	(977,833)	(1,015,583)	(977,833)
Total	244,417	282,167	244,417	282,167
Trademark
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	5 years	5 years
Gross Carrying Amount	60,000	60,000	60,000	60,000
Accumulated amortization	(12,000)	(9,000)	(12,000)	(9,000)
Total	$ 48,000	$ 51,000	$ 48,000	$ 51,000

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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