Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Useful Life	March 31,	December 31,
	in Years	2015	2014
Trade name	15 - 20	$                1,239	$                 1,293
Patents and know-how	5 - 12	4,268	4,529
Customer relationships	4 - 8	767	837
Intangible assets, Gross		6,274	6,659
Less accumulated amortization		(3,871)	(3,997)
Intangible assets, Net		$                2,403	$                 2,662

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years ending December 31
Remainder of 2015	$	417
2016	$	463
2017	$	454
2018	$	163
2019	$	163
2020	$	163