XML 42 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8
Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Accounts Receivable    
Contracts receivable, net of allowance for doubtful accounts $ 235,302 $ 227,548
Retention 48,768 39,710
Contracts receivable and retention 284,070 267,258
Other accounts receivable 427 837
Accounts receivable, net 284,497 268,095
Allowance for doubtful accounts $ 535 $ 432