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Patents (Tables)
 12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Intangible Assets

Patents, net consists of the following at December 31:

ExpirationEstimated
Original
Life		20132012
Patent (Various)Various5 
$
9 
$
9 
Patent (Various)Various7 476 476 
5544255201313 93 93 
5647017201414 187 187 
5818955201515 373 373 
6064751201717 1,213 1,213 
6091835201717 4,394 4,394 
6,745 6,745 
Less accumulated amortization(5,455)(5,090)
$
1,290 
$
1,655