Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Jul. 01, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill	$ 62,053		$ 62,280
Indefinite-Lived Trademarks	2,165		2,165
Goodwill [Roll Forward]
Goodwill, Balance beginning of period	99,553
Accumulated Impairment Loss	(36,088)		(37,273)
Additions	0
Translation and purchase accounting djustments	(227)
Goodwill, Balance end of period	98,141
GETS [Member]
Goodwill [Line Items]
Fair value in excess of carrying value (percent)		17.00%
Goodwill		15,600
Goodwill [Roll Forward]
Goodwill, Balance beginning of period	35,713
Accumulated Impairment Loss	(164)		(164)
Additions	0
Translation and purchase accounting djustments	0
Goodwill, Balance end of period	35,713
GETS AIE [Member]
Goodwill [Line Items]
Fair value in excess of carrying value (percent)		18.00%
Goodwill		10,400
PSS [Member]
Goodwill [Line Items]
Fair value in excess of carrying value (percent)		9.00%
Goodwill		11,800
Goodwill [Roll Forward]
Goodwill, Balance beginning of period	47,075
Accumulated Impairment Loss	(28,987)		(30,057)
Additions	0
Translation and purchase accounting djustments	(185)
Goodwill, Balance end of period	45,820
MRI [Member]
Goodwill [Roll Forward]
Goodwill, Balance beginning of period	16,765
Accumulated Impairment Loss	(6,937)		(7,052)
Additions	0
Translation and purchase accounting djustments	(42)
Goodwill, Balance end of period	$ 16,608