5. Patents and Licenses (Tables)

3 Months Ended

Mar. 31, 2017

Patents And Licenses Tables

Patents and Licenses

March 31, 2017						December 31, 2016
Weighted Average Original Life (years)		Gross Carrying Amount		Accumulated Amortization		Weighted Average Original Life (years)		Gross Carrying Amount		Accumulated Amortization
	15.67	$	13,840	$	11,972		15.67	$	13,840	$	11,911

Future Amortization Expense

2018	$119
2019	$119

2020	$119
2021	$119

2022                                            $117