Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Condensed Consolidated Statements Of Operations [Abstract]
Revenue	$ 1,926	$ 12,783	$ 4,876	$ 20,297
Cost of revenue	2,232	10,645	5,006	16,557
Gross profit (loss)	(306)	2,138	(130)	3,740
Selling, general, and administrative expenses	1,114	1,210	2,065	2,617
Engineering and support expenses	475	886	974	1,788
Total operating expenses	1,589	2,096	3,039	4,405
Operating income (loss)	(1,895)	42	(3,169)	(665)
Other loss, net	(13)	(23)	(2)	(42)
Income (loss) from continuing operations before income taxes	(1,908)	19	(3,171)	(707)
Income tax expense	2		2
Net income (loss) from continuing operations	(1,910)	19	(3,173)	(707)
Loss from discontinued operations, net of income taxes	(21)	(594)	(21)	(601)
Net loss	$ (1,931)	$ (575)	$ (3,194)	$ (1,308)
Basic and diluted loss per share:
Net loss from continuing operations	$ (0.26)		$ (0.43)	$ (0.10)
Net loss from discontinued operations		$ (0.08)		$ (0.08)
Total basic and diluted loss per share	$ (0.26)	$ (0.08)	$ (0.43)	$ (0.18)
Weighted average common shares outstanding:
Basic	7,344	7,327	7,344	7,327
Diluted	7,344	7,327	7,344	7,327
Common shares outstanding	7,344	7,327	7,344	7,327