Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

Intangible assets consist of the following (in thousands):

	Useful Life in Years	March 31, 2017			December 31, 2016
Trade name	15 - 20	$	1,208		$	1,204
Patents and know-how	5 - 12	4,113			4,090
Customer relationships	4 - 8	731			721
		6,052			6,015
Less accumulated amortization		(4,675		)	(4,532		)
		$	1,377		$	1,483

Schedule of estimated amortization expense

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

Years ending December 31:
Remainder of 2017	$	324
2018	161
2019	161
2020	161
2021	161
Thereafter	409
	$	1,377