Costs, Estimated Earnings and Billings on Uncompleted Contracts (Tables)

3 Months Ended

Apr. 30, 2014

Contractors [Abstract]

Aggregate Amounts of Costs Incurred and Earnings Accrued on Uncompleted Contracts Compared with Billings for Contracts

The tables below set forth the aggregate amounts of costs incurred and earnings accrued on uncompleted contracts compared with the billings for those contracts through April 30, 2014 and January 31, 2014, and reconcile the net amounts of billings in excess of costs and estimated earnings to the corresponding amounts included in the condensed consolidated balance sheets at those dates.

	April 30,		January 31,
	2014		2014
Costs incurred on uncompleted contracts	$	205,845,000	$	162,137,000
Estimated accrued earnings		30,387,000		21,961,000
		236,232,000		184,098,000
Less—Billings to date		413,549,000		318,307,000
	$	177,317,000	$	134,209,000
Costs and estimated earnings in excess of billings	$	200,000	$	527,000
Billings in excess of costs and estimated earnings		177,517,000		134,736,000
	$	177,317,000	$	134,209,000