Annual report pursuant to Section 13 and 15(d)

Billed and unbilled receivables

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Billed and unbilled receivables
12 Months Ended
Sep. 30, 2015
Billed and unbilled receivables  
Billed and unbilled receivables

11. Billed and unbilled receivables

        Changes in the reserves against current billed, billable and unbilled accounts receivable were as follows (in thousands):

                                                                                                                                                                                    

 

 

Year ended September 30,

 

 

 

2015

 

2014

 

2013

 

Balance at beginning of year

 

$

3,138

 

$

3,828

 

$

3,975

 

Additions to reserve

 

 

2,690

 

 

1,767

 

 

2,334

 

Deductions

 

 

(2,443

)

 

(2,457

)

 

(2,481

)

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Balance at end of year

 

$

3,385

 

$

3,138

 

$

3,828

 

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        In evaluating the net realizable value of accounts receivable, we consider such factors as current economic trends, customer credit-worthiness, and changes in the customer payment terms and collection trends. Changes in the assumptions used in analyzing a specific account receivable may result in a reserve being recognized in the period in which the change occurs.

        At September 30, 2015 and 2014, $12.1 million and $8.8 million of our unbilled receivables related to amounts pursuant to contractual retainage provisions. We anticipate that the majority of the fiscal 2015 balance will be collected during the 2016 fiscal year.