Operating Segments and Related Information Narrative Revenue (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Concentration Risk, Government Contracts	197	448	643	872
Government Contracts Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	6.00%	7.00%	9.00%	6.00%
Solar Equipment [Member]
Segment Reporting Information [Line Items]
The Number of Major Customers That Account for 10% or Greater of the Company's Revenue		2		4
Solar Equipment [Member] | Customer B [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage		22.00%		10.00%
Solar Equipment [Member] | Customer J [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage				13.00%
Solar Equipment [Member] | Customer K [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage		13.00%		13.00%
Solar Equipment [Member] | Customer R [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage				13.00%
Biomedical Service [Member]
Segment Reporting Information [Line Items]
The Number of Major Customers That Account for 10% or Greater of the Company's Revenue	2	1	2	1
Biomedical Service [Member] | Customer A [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	11.00%		13.00%
Biomedical Service [Member] | Customer C [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	20.00%	12.00%	21.00%	11.00%