Uncompleted Contracts - Summary (Details) - USD ($) $ in Thousands	May. 02, 2015	Apr. 26, 2014
Contractors [Abstract]
Costs incurred	$ 708,029	$ 486,430
Estimated earnings	237,239	166,250
Costs and estimated earnings on uncompleted contracts	945,268	652,680
Less billings to date	933,997	641,763
Costs in excess of billings, net	$ 11,271	$ 10,917

Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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