Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 244,662	$ 295,732		$ 748,941	$ 856,286
Gross profit	46,827	54,488		140,244	158,048
Operating profit	(22,129)	8,482		(19,786)	20,155
Other income (expense), net	683	(133)		599	(207)
Income before income taxes	(21,446)	8,349		(19,187)	19,948
Restructuring Charges	566	0		613	72
Assets	349,764			349,764		$ 372,220
Loss on disposition of controlling interest	0	0		310	0
Asset impairment charges	21,537	0		21,537	0
CEO Compensation - Net Income			$ 900
CEO Compensation - Operating Charge			700
CEO Compensation - Operating Charge (after Tax)			400
CEO Separation - DTA Write-off			$ 500
Gain on sale of a non-operating corporate asset	800
Proceeds from sale of a non-operating corporate asset	1,200			1,220	66
GETS [Member]
Segment Reporting Information [Line Items]
Revenue	84,293	88,388		251,251	254,930
Gross profit	22,045	24,391		64,836	69,596
Operating profit	(9,798)	3,429		(7,963)	7,200
Restructuring Charges	235	0		235	419
Assets	111,632			111,632		120,223
Asset impairment charges	10,900
PSS [Member]
Segment Reporting Information [Line Items]
Revenue	146,864	192,426		457,682	557,295
Gross profit	18,166	23,141		55,751	67,896
Operating profit	(9,092)	7,367		(1,979)	20,379
Restructuring Charges	331	0		378	(249)
Assets	153,317			153,317		159,774
Asset impairment charges	10,700
MRI [Member]
Segment Reporting Information [Line Items]
Revenue	13,505	14,918		40,008	44,061
Gross profit	6,616	6,956		19,657	20,556
Operating profit	1,927	1,721		4,957	4,733
Restructuring Charges	0	0		0	0
Assets	23,528			23,528		23,539
Corporate [Member]
Segment Reporting Information [Line Items]
Operating profit	(5,166)	(4,035)		(14,801)	(12,157)
Restructuring Charges	0	$ 0		0	$ (98)
Assets	$ 61,287			$ 61,287		$ 68,684