Accounts Receivable

3 Months Ended

Mar. 31, 2012

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

3. Accounts Receivable

Receivable balances consist of the following at:

(Dollars in thousands)	Test and
	Measurement
	Instrumentation		New Energy		Consolidated Totals
March 31, 2012
U.S. Government	$	67	$	—	$	67
Commercial		594		—		594
Total	$	661	$	—	$	661
December 31, 2011
U.S. Government	$	990	$	—	$	990
Commercial		887		4		891
Total	$	1,877	$	4	$	1,881

For the three months ended March 31, 2012 and 2011, the largest commercial customer represented 14.6% and 31.6%, respectively, and a U.S. governmental agency represented 11.5% and 6.8%, respectively, of the Company’s Test and Measurement Instrumentation segment product revenue. As of March 31, 2012 and December 31, 2011, the largest commercial customer represented 21.4% and 10.0%, respectively, and a U.S. governmental agency represented 10.1% and 52.7%, respectively, of the Company’s Test and Measurement Instrumentation segment accounts receivable.

As of March 31, 2012, there were no outstanding receivables for the New Energy segment. The balance as of December 31, 2011 represents minimal amounts due for service contracts.

As of March 31, 2012 and December 31, 2011, the Company had no allowance for doubtful trade accounts receivable.