Operating Segments and Related Information Narrative Revenue (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Concentration risk, government contracts	42	61	244	704
Government contracts concentration risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	1.00%	1.00%	2.00%	6.00%
Biomedical Service
Segment Reporting Information [Line Items]
Segment Reporting, Disclosure of Major Customers	two	one	2	2
Biomedical Service | Customer A
Segment Reporting Information [Line Items]
Concentration risk, percentage	18.00%		17.00%	11.00%
Biomedical Service | Customer C
Segment Reporting Information [Line Items]
Concentration risk, percentage	22.00%	17.00%	19.00%	20.00%
Solar | Customer D
Segment Reporting Information [Line Items]
Concentration risk, percentage		14.00%	14.00%
Segment Reporting, Disclosure of Major Customers		1	1
Solar | Customer B [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage		13.00%
Segment Reporting, Disclosure of Major Customers		1
Solar | Customer K
Segment Reporting Information [Line Items]
Concentration risk, percentage	14.00%		18.00%
Segment Reporting, Disclosure of Major Customers	one		one
Solar | Customer F [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage		15.00%
Segment Reporting, Disclosure of Major Customers		1