Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Intangible Assets [Abstract]

Schedule Of Intangible Assets

	2013
	Gross Carrying Amount		Accumulated Amortization		Net Value
Patents and copyrights	$	18,943,020	$	10,397,136	$	8,545,884
Prepaid licensing fees		574,000		567,452		6,548
	$	19,517,020	$	10,964,588	$	8,552,432
	2012
	Gross Carrying Amount		Accumulated Amortization		Net Value
Patents and copyrights	$	18,290,991	$	9,329,438	$	8,961,553
Prepaid licensing fees		574,000		557,452		16,548
	$	18,864,991	$	9,886,890	$	8,978,101

Schedule of Amortization Expense

		Amortization Expense
	Weighted average estimated life (in years)
		2013		2012		2011
Patents and copyrights	17	$	1,067,698	$	1,049,446	$	1,013,681
Prepaid licensing fees	2		10,000		3,452		0
Total amortization		$	1,077,698	$	1,052,898	$	1,013,681

Schedule Of Expected Amortization Expense

2014	$	1,054,955
2015		953,970
2016		917,996
2017		915,396
2018		859,572
2019 and thereafter		3,850,543
Total	$	8,552,432