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

12 Months Ended

Jan. 31, 2016

Costs and estimated earnings on uncompleted contracts [Abstract]

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

	2015	2014
Costs incurred on uncompleted contracts	$78,843	$66,547
Estimated earnings	46,359	31,082
Earned revenue	125,202	97,629
Less billings to date	123,915	97,610
Costs in excess of billings, net	$1,287	$19
Balance sheet classification
Costs and estimated earnings in excess of billings on uncompleted contracts	$2,463	$700
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,176)	(681)
Costs in excess of billings, net	$1,287	$19