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Patents (Tables)
 6 Months Ended
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Intangible Assets

The following table summarizes the patents:

Amortizable intangible assets:June 30, 2015December 31, 2014
Carrying
Amount		Accumulated
Amortization		Net ValueCarrying
Amount		Accumulative
Amortization		Net Value
Patents
$
6,745
$
(5,985)
$
760
$
6,745
$
(5,812)
$
933