Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2014	Jun. 30, 2015
Goodwill [Line Items]
Impairment of Intangible Assets, Finite-lived	$ 1,200
Goodwill	50,630	$ 50,740
Indefinite-Lived Trademarks	2,165	2,165
Goodwill [Roll Forward]
Goodwill, Balance beginning of period		96,251
Accumulated Impairment Loss	(45,621)	(44,385)
Additions		0
Translation and purchase accounting djustments		110
Goodwill, Balance end of period	96,251	95,125
GETS [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss	10,900
Goodwill [Roll Forward]
Goodwill, Balance beginning of period		35,713
Accumulated Impairment Loss	(11,051)	(11,051)
Additions		0
Translation and purchase accounting djustments		0
Goodwill, Balance end of period	35,713	35,713
PSS [Member]
Goodwill [Roll Forward]
Goodwill, Balance beginning of period		44,298
Accumulated Impairment Loss	(27,904)	(26,612)
Additions		0
Translation and purchase accounting djustments		90
Goodwill, Balance end of period	44,298	43,096
MRI [Member]
Goodwill [Roll Forward]
Goodwill, Balance beginning of period		16,240
Accumulated Impairment Loss	(6,666)	(6,722)
Additions		0
Translation and purchase accounting djustments		20
Goodwill, Balance end of period	$ 16,240	$ 16,316