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Summary of acquired identifiable intangible assets (Details) (USD $)
|
Dec. 31, 2013
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Dec. 31, 2012
|
|---|---|---|
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Acquired Technology
|
||
| Weighted Average Amortization Period | 8 | |
| Weighted Average Amortization Period | 8 | |
| Gross Carrying Amount | $ 17,134,953 | |
| Accumulated Amortization | (12,156,049) | |
| Total Value | 4,978,904 | |
| Weighted Average Amortization Period | 8 | |
| Gross Carrying Amount | 17,036,835 | |
| Accumulated Amortization | (14,301,907) | |
| Total Value | 2,734,928 | |
|
Customer Relationships
|
||
| Weighted Average Amortization Period | 8 | |
| Weighted Average Amortization Period | 8 | |
| Gross Carrying Amount | 1,000,000 | |
| Accumulated Amortization | (708,333) | |
| Total Value | 291,667 | |
| Weighted Average Amortization Period | 8 | |
| Gross Carrying Amount | 1,000,000 | |
| Accumulated Amortization | (833,333) | |
| Total Value | 166,667 | |
|
Total intangible assets
|
||
| Gross Carrying Amount | 18,134,953 | |
| Accumulated Amortization | 12,864,382 | |
| Total Value | 5,270,571 | |
| Gross Carrying Amount | 18,036,835 | |
| Accumulated Amortization | (15,135,240) | |
| Total Value | $ 2,901,595 |