Contracts Receivable Including Retainage, net - Rollforward of Allowance (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2019 |
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| Allowance for Doubtful Accounts Receivable [Roll Forward] | |||
| Balance at beginning of period | $ 1,440 | $ 1,003 | |
| Charged to bad debt expense | 784 | 705 | $ 995 |
| Write-off of contracts receivable including retainage | (298) | (268) | |
| Balance at end of period | $ 1,926 | $ 1,440 | $ 1,003 |
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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