Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets

Schedule of intangible assets

        Intangible assets consist of the following (in thousands):

		December 31,
	Useful Life in Years
		2015			2014
Trade name	15 - 20	$	1,186		$	1,293
Patents and know-how	5 - 12		4,002			4,529
Customer relationships	4 - 8		724			837
			5,912			6,659
Less accumulated amortization			(4,011	)		(3,997	)
		$	1,901		$	2,662

Schedule of estimated amortization expense

Estimated amortization expense for existing intangible assets for each of the next five years is as follows (in thousands):

Years ending December 31:
2016	$	434
2017	$	425
2018	$	161
2019	$	161
2020	$	161