Costs and estimated earnings on uncompleted contracts Costs and estimated earnings on uncompleted contracts (Tables)

12 Months Ended

Jan. 31, 2014

Costs and estimated earnings on uncompleted contracts [Abstract]

Costs and estimated earnings on uncompleted contracts [Table Text Block]

	2013	2012
Costs incurred on uncompleted contracts	$52,064	$39,556
Estimated earnings	18,915	13,861
Earned revenue	70,979	53,417
Less billings to date	71,725	52,772
Costs in excess of billings, net	($746)	$645
Balance sheet classification
Costs and estimated earnings in excess of billings on uncompleted contracts	$1,476	$1,630
Billings in excess of costs and estimated earnings on uncompleted contracts	(2,222)	(985)
Costs in excess of billings, net	($746)	$645