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Accounts Receivable
 12 Months Ended
Dec. 31, 2011
Accounts Receivable  
Accounts Receivable

Note 5—Accounts Receivable

 

The following is a summary of accounts receivable at December 31:

 

 

 

2011

 

2010

 

Contracts receivable, net of allowance for doubtful accounts of $363 and $233 for 2011 and 2010, respectively

 

$

166,298

 

$

185,299

 

Retention

 

20,378

 

20,057

 

 

 

186,676

 

205,356

 

Due from affiliates

 

—

 

200

 

Other accounts receivable

 

702

 

2,589

 

 

 

$

187,378

 

$

208,145

 

 

Amounts “due from affiliates” primarily relate to amounts due from related parties (See Note 8 “Equity Method Investments” and Note 20 “Related Party Transactions”) for the performance of construction contracts. Contract revenues earned from related parties were approximately $5,681, $1,568, and $23,436 for the years ended December 31, 2011, 2010 and 2009, respectively.