Annual report pursuant to Section 13 and 15(d)

Accounts Receivable Reserve (Details)

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Accounts Receivable Reserve (Details) (Accounts receivable, billed and unbilled, USD $)
12 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2009
Accounts receivable, billed and unbilled
     
Changes in the reserves against current billed accounts receivable      
Balance at beginning of year $ 1,845,000 $ 5,249,000 $ 4,930,000
Additions to reserve 3,063,000 1,594,000 1,486,000
Deductions (1,643,000) (4,998,000) (1,167,000)
Balance at end of year 3,265,000 1,845,000 5,249,000
Contractual retainage provisions $ 4,200,000 $ 3,300,000