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Accounts Receivable - Net (Tables) | 6 Months Ended
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Mar. 31, 2019
Receivables [Abstract] |
Schedule of net accounts receivable and billings in excess of costs on uncompleted contracts | Net accounts receivable consisted of the following:
| March 31, 2019 |  | September 30, 2018
| (in thousands)
Billed | $ | 439,480 |  |  | $ | 464,062 |
Unbilled | 234,577 |  |  | 267,739 |
Total accounts receivable – gross | 674,057 |  |  | 731,801 |
Allowance for doubtful accounts | (44,460 | ) |  | (37,580 | )
Total accounts receivable – net | $ | 629,597 |  |  | $ | 694,221 |

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- Definition Tabular disclosure of the various types of trade accounts receivable such as billed and unbilled accounts receivable and contract retentions, as well as the gross carrying value, allowance, and net carrying value, and billings in excess of costs on uncompleted contracts as of the balance sheet date. + References No definition available. + Details
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- References No definition available. + Details
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