Note 10 - Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Three Months	Net Sales		Loss (Gain) From Operations			Depreciation and Amortization		Assets
June 30, 2012
Power & Energy Group	$	394	$	5,047		$	230	$	54,263
All Other		60		(38	)		20		372
Consolidated Total	$	454	$	5,009		$	250	$	54,635
June 30, 2011
Power & Energy Group	$	229	$	3,918		$	360	$	19,973
All Other		247		77			19		510
Consolidated Total	$	476	$	3,995		$	379	$	20,483

Six Months	Net Sales		Loss (Gain) From Operations			Depreciation and Amortization		Assets
June 30, 2012
Power & Energy Group	$	591	$	10,022		$	481	$	54,263
All Other		120		(79	)		38		372
Consolidated Total	$	711	$	9,943		$	519	$	54,635
June 30, 2011
Power & Energy Group	$	2,525	$	9,794		$	716	$	19,973
All Other		502		105			38		510
Consolidated Total	$	3,027	$	9,899		$	754	$	20,483

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

Customer	Sales Six Months Ended June 30, 2012		Accounts Receivable Balance at June 30, 2012
Power and Energy Group:
Hybricon	$	131
ABB Secheron		98
Cargotec		90
Bombardier		79	$	79
Ocean Power Te		74

Customer	Sales Six Months Ended June 30, 2011		Accounts Receivable Balance at June 30, 2011
Power and Energy Group:
Yintong Energy (YTE)*	$	1,713	$	15
Proterra, LLC		512
All Other Division:
US Army	$	303	$	116

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

Geographic information (a):	Sales Six Months Ended June 30, 2012		Sales Six Months Ended June 30, 2011
United States	$	205	$	1,211
Germany		142
Sweden		131
Switzerland		103
Other foreign countries		130		103
China				1,713
Total	$	711	$	3,027