Costs and estimated earnings on uncompleted contracts

12 Months Ended

Jan. 31, 2012

Costs and estimated earnings on uncompleted contracts [Abstract]

Costs and estimated earnings on uncompleted contracts

Note 4 - Costs and estimated earnings on uncompleted contracts

	2011		2010
Costs incurred on uncompleted contracts	$61,938		$40,039
Estimated earnings	11,550		6,668
Earned revenue	73,488		46,707
Less billings to date	73,091		46,249
Total	$397		$458
Balance sheet classification
Costs and estimated earnings in excess of billings on uncompleted contracts	$2,375		$2,055
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,978	)	(1,597	)
Total	$397		$458