Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Restructuring Charges	$ 0	$ (298)	$ 47	$ 72
Revenue	246,821	284,282	504,279	560,554
Gross profit	46,647	52,797	93,417	103,560
Operating profit	1,203	6,988	2,343	11,673
Other income (expense), net	(97)	8	(84)	(74)
Assets	375,534		375,534		$ 372,220
Income before income taxes	1,106	6,996	2,259	11,599
CEO Compensation - Net Income		900
CEO Compensation - Operating Charge		700
CEO Compensation - Operating Charge (after Tax)		400
CEO Separation - DTA Write-off		500
GETS [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	86	0	419
Revenue	84,437	84,288	166,958	166,542
Gross profit	21,849	22,805	42,791	45,205
Operating profit	1,487	2,215	1,835	3,771
Assets	124,822		124,822		120,223
PSS [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	(286)	47	(249)
Revenue	149,392	184,730	310,818	364,869
Gross profit	18,326	22,809	37,585	44,755
Operating profit	2,957	6,867	7,113	13,012
Assets	154,333		154,333		159,774
MRI [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	0	0	0
Revenue	12,992	15,264	26,503	29,143
Gross profit	6,472	7,183	13,041	13,600
Operating profit	1,574	1,752	3,030	3,012
Assets	22,548		22,548		23,539
Corporate [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	(98)	0	(98)
Operating profit	(4,815)	$ (3,846)	(9,635)	$ (8,122)
Assets	$ 73,831		$ 73,831		$ 68,684

CEO Compensation - Net Income: Net Income impact of CEO separation cost

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CEO Compensation - Operating Charge: CEO pre-tax compensation change to operations

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CEO Compensation - Operating Charge (after Tax): : CEO after-tax compensation change to operations

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CEO Separation - DTA Write-off: Charge to income tax expense for the write-off of deferred tax assets related to the forfeiture of outstanding awards

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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