Accounts Receivable (Tables)

12 Months Ended

Jul. 30, 2016

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable consisted of the following (dollars in thousands):

	July 30, 2016			July 25, 2015
Contract billings	$	297,532		$	292,029
Retainage	32,101			24,321
Total	329,633			316,350
Less: allowance for doubtful accounts	(1,603		)	(1,216		)
Accounts receivable, net	$	328,030		$	315,134

Allowance for Doubtful Accounts Receivable

The Company maintains an allowance for doubtful accounts for estimated losses on uncollected balances. The allowance for doubtful accounts changed as follows (dollars in thousands):

	Fiscal Year Ended
	2016			2015
Allowance for doubtful accounts at beginning of period	$	1,216		$	836
Bad debt expense	1,252			465
Amounts charged against the allowance	(865		)	(85		)
Allowance for doubtful accounts at end of period	$	1,603		$	1,216