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Accounts Receivable
12 Months Ended
Sep. 30, 2012
Accounts Receivable [Abstract]  
Accounts Receivable

4. Accounts Receivable

Accounts receivable, net of the allowance for doubtful accounts, consist of the following at September 30, 2012, and 2011:

(Dollars in thousands)   2012 2011
Commercial $ 147,685 137,498
U.S. Government and prime contractors   3,366 6,585
Total $ 151,051 144,083