Accounts Receivable - Net and Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2017

Accounts Receivable - Net and Revenue Recognition [Abstract]

Schedule of net accounts receivable and billings in excess of costs on uncompleted contracts

Net accounts receivable and billings in excess of costs on uncompleted contracts consisted of the following:

	December 31, 2017			October 1, 2017
	(in thousands)
Billed	$	437,317		$	376,287
Unbilled	419,912			404,899
Contract retentions	23,109			39,840
Total accounts receivable – gross	880,338			821,026
Allowance for doubtful accounts	(34,137		)	(32,259		)
Total accounts receivable – net	$	846,201		$	788,767
Billings in excess of costs on uncompleted contracts	$	132,930		$	117,499