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Accounts Receivable
12 Months Ended
Jul. 27, 2013
Receivables [Abstract]  
Accounts Receivable
Accounts Receivable
 
Accounts receivable consists of the following:
 
July 27,
2013
 
July 28,
2012
 
(Dollars in thousands)
Contract billings
$
239,498

 
$
136,610

Retainage and other receivables
12,833

 
5,448

Total
252,331

 
142,058

Less: allowance for doubtful accounts
(129
)
 
(270
)
Accounts receivable, net
$
252,202

 
$
141,788


 
As of July 27, 2013, the Company expected to collect all retainage balances within the next twelve months.

The allowance for doubtful accounts changed as follows:
 
Fiscal Year Ended
 
July 27,
2013
 
July 28,
2012
 
(Dollars in thousands)
Allowance for doubtful accounts at beginning of period
$
270

 
$
368

Bad debt expense, net
139

 
186

Amounts charged against the allowance
(280
)
 
(284
)
Allowance for doubtful accounts at end of period
$
129

 
$
270