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