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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Schedule of Property, Plant and Equipment by Major Asset Class | The Company's property, plant and equipment assets by major asset class at September 30 consist of:
|  | 2021 |  | 2020
Property, plant and equipment: |  |  |  |
Land |  | $ | 994 |  |  | $ | 1,000 |
Buildings |  | 16,931 |  |  | 15,564 |
Machinery and equipment |  | 92,871 |  |  | 91,461 |
Total property, plant and equipment |  | 110,796 |  |  | 108,025 |
Less: Accumulated depreciation |  | 68,088 |  |  | 63,824 |
Property, plant and equipment, net |  | $ | 42,708 |  |  | $ | 44,201 |
Schedule of Dilutive Effect of Company's Restricted Shares and Performance Shares | The dilutive effect is as follows:
|  | September 30, |  |
|  | 2021 |  | 2020 |  |
Net income (loss) |  | $ | (743) |  |  | $ | 9,191 |  |  |
Weighted-average common shares outstanding (basic) |  | 5,759 |  |  | 5,661 |  |  |
Effect of dilutive securities: |  |  |  |  |  |
Restricted shares |  | — |  |  | 120 |  |  |
Performance shares |  | — |  |  | 10 |  |  |
Weighted-average common shares outstanding (diluted) |  | 5,759 |  |  | 5,791 |  |  |
Net income (loss) per share – basic: |  | $ | (0.13) |  |  | $ | 1.62 |  |  |
Net income (loss) per share – diluted: |  | $ | (0.13) |  |  | $ | 1.59 |  |  |
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share |  | 412 |  |  | 207 |  |  |
Schedule of Accumulated Other Comprehensive Loss | The components of accumulated other comprehensive loss as shown on the consolidated balance sheets at September 30 are as follows:
| 2021 |  | 2020 |  |
Foreign currency translation adjustment, net of income tax benefit of $0 and $0, respectively | $ | (5,359) |  |  | $ | (5,257) |  |  |
Net retirement plan liability adjustment, net of income tax benefit of $(3,758) and $(3,758), respectively | (3,720) |  |  | (8,211) |  |  |
Total accumulated other comprehensive loss | $ | (9,079) |  |  | $ | (13,468) |  |  |
The following table provides additional details of the amounts recognized into net earnings from accumulated other comprehensive loss, net of tax:
| Foreign Currency Translation Adjustment |  | Retirement Plan Liability Adjustment |  |  |  | Accumulated Other Comprehensive Loss
Balance at September 30, 2019 | $ | (5,667) |  |  | $ | (7,642) |  |  |  |  | $ | (13,309) |
Other comprehensive income (loss) before reclassifications | 410 |  |  | (1,560) |  |  |  |  | (1,150) |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 991 |  |  |  |  | 991 |
Net current-period other comprehensive income (loss) | 410 |  |  | (569) |  |  |  |  | (159) |
Balance at September 30, 2020 | (5,257) |  |  | (8,211) |  |  |  |  | (13,468) |
Other comprehensive income (loss) before reclassifications | (102) |  |  | 3,371 |  |  |  |  | 3,269 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 1,120 |  |  |  |  | 1,120 |
Net current-period other comprehensive income (loss) | (102) |  |  | 4,491 |  |  |  |  | 4,389 |
Balance at September 30, 2021 | $ | (5,359) |  |  | $ | (3,720) |  |  |  |  | $ | (9,079) |
Schedule of Reclassification Out of Accumulated Other Comprehensive Loss | The following table reflects the changes in accumulated other comprehensive loss related to the Company for September 30, 2021 and 2020:
|  | Amount reclassified from accumulated other comprehensive loss |  |  |  |  |  |
Details about accumulated other comprehensive loss components |  | 2021 |  | 2020 |  |  |  |  |  | Affected line item in the Consolidated Statement of Operations
Amortization of Retirement plan liability: |  |  |  |  |  |  |  |  |  |
Prior service costs |  | $ | — |  |  | $ | — |  |  |  |  |  |  | (1)
Net actuarial gain (loss) |  | 4,217 |  |  | (808) |  |  |  |  |  |  | (1)
Settlements/curtailments |  | 274 |  |  | 239 |  |  |  |  |  |  | (1)
|  | 4,491 |  |  | (569) |  |  |  |  |  |  | Total before taxes
|  | — |  |  | — |  |  |  |  |  |  | Income tax expense
|  | $ | 4,491 |  |  | $ | (569) |  |  |  |  |  |  | Net of taxes
(1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 8, Retirement Benefit Plans, of the consolidated financial statements for further information.

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