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Detail of Selected Balance Sheet Accounts | 9 Months Ended
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Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Detail of Selected Balance Sheet Accounts | Detail of Selected Balance Sheet Accounts Allowance for Credit Losses Activity in our allowance for credit losses consisted of the following (in thousands):
| Three months ended June 30, |  | Nine months ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Balance at beginning of period | $ | 703 |  |  | $ | 382 |  |  | $ | 333 |  |  | $ | 510 |
Bad debt expense (recovery), net | (170) |  |  | 326 |  |  | 274 |  |  | 194 |
Uncollectible accounts written off, net of recoveries | 6 |  |  | (168) |  |  | (64) |  |  | (178) |
Change due to foreign currency translation | (22) |  |  | 5 |  |  | (26) |  |  | 19 |
Balance at end of period | $ | 517 |  |  | $ | 545 |  |  | $ | 517 |  |  | $ | 545 |
Inventories The components of inventories are summarized below (in thousands):
| June 30, 2022 |  | September 30, 2021
Raw materials, parts and sub-assemblies, net | $ | 47,458 |  |  | $ | 28,688 |
Work-in-progress | 1,281 |  |  | 1,147 |
Total inventories | $ | 48,739 |  |  | $ | 29,835 |
Accrued Product Warranty Activity in our product warranty accrual consisted of the following (in thousands):
| Three months ended June 30, |  | Nine months ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Balance at beginning of period | $ | 2,347 |  |  | $ | 2,467 |  |  | $ | 2,531 |  |  | $ | 2,771 |
Increase to warranty expense | 462 |  |  | 515 |  |  | 1,077 |  |  | 1,568 |
Deduction for warranty charges | (499) |  |  | (557) |  |  | (1,303) |  |  | (1,970) |
Change due to foreign currency translation | (22) |  |  | 7 |  |  | (17) |  |  | 63 |
Balance at end of period | $ | 2,288 |  |  | $ | 2,432 |  |  | $ | 2,288 |  |  | $ | 2,432 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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