Consolidated Statements of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 13,307	$ 16,999
Cost of revenues	10,195	13,062
Gross profit	3,112	3,937
Operating expenses:
Selling, general and administrative (including stock-based compensation expense of $192 and $66)	3,841	4,447
Research and development (including stock-based compensation expense of $2 and $17)	1,265	1,915
Total operating expenses	5,106	6,362
Loss from operations	(1,994)	(2,425)
Other (expense) income:
Interest expense	(336)	(321)
Other income (expense), net	306	(314)
Total other expense	(30)	(635)
Loss from continuing operations before income taxes	(2,024)	(3,060)
Income tax expense (benefit) from continuing operations	114	(322)
Net loss from continuing operations	(2,138)	(2,738)
Net loss from operations of discontinued Energy Systems division	(3)	(83)
Net loss	(2,141)	(2,821)
Foreign currency translation adjustments	(593)	502
Comprehensive loss	$ (2,734)	$ (2,319)
Basic and diluted net loss per share:
Net loss from continuing operations per share (in Dollars per share)	$ (0.29)	$ (0.38)
Net loss from discontinued operations per share (in Dollars per share)		$ (0.01)
Net loss per share (in Dollars per share)	$ (0.29)	$ (0.39)
Weighted-average number of common shares outstanding - basic and diluted (in Shares)	7,261	7,219