Schedule of Intangible assets (Tables)
 12 Months Ended
Dec. 31, 2013
Schedule of Intangible assets:  
Schedule of acquired identifiable intangible assets

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of December 31, 2013 are as follows:

 

 

Weighted Average

 

Gross Carrying

 

Accumulated

 

 

 

 

Amortization Period

 

Amount

 

Amortization

 

Total

 

 

 

 

 

 

 

 

 

 

 

 

Acquired Technology

8 years

 

 

$

17,036,835 

 

$

(14,301,907)

 

$

2,734,928 

 

Customer Relationships

8 years

 

 

1,000,000 

 

(833,333)

 

166,667 

 

 

 

 

 

 

$

18,036,835 

 

$

(15,135,240)

 

$

2,901,595 
Schedule of accumulated amortization of the Company's acquired identifiable intangible assets

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of December 31, 2012 are as follows: 

 

 

Weighted Average

 

Gross Carrying

 

Accumulated

 

 

 

 

Amortization Period

 

Amount

 

Amortization

 

Total

 

 

 

 

 

 

 

 

 

 

 

 

Acquired Technology

8 years

 

 

$

17,134,953 

 

$

(12,156,049)

 

$

4,978,904 

 

Customer Relationships

8 years

 

 

1,000,000 

 

(708,333)

 

291,667 

 

 

 

 

 

 

$

18,134,953 

 

$

(12,864,382)

 

$

5,270,571 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Amortization expense for acquired identifiable intangible assets for the years ended December 31, 2013, 2012, and 2011 was $2.3 million, $2.3 million, and $2.3 million, respectively. Estimated amortization expense for subsequent years is as follows:

 

2014

$

2,263,776 

2015

637,819 

Total

$

2,901,595