Restructure and Other Charges - Narrative (Details) $ in Thousands |
2 Months Ended | 3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|---|
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Jan. 06, 2025
numberOfEmployee
|
Jan. 03, 2025
numberOfEmployee
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May 30, 2025
numberOfEmployee
|
Jun. 30, 2026
USD ($)
numberOfEmployee
|
Jun. 30, 2026
USD ($)
numberOfEmployee
|
Jun. 30, 2025
USD ($)
|
|
| Restructuring Cost and Reserve [Line Items] | ||||||
| Restructuring and related cost, number of positions eliminated | numberOfEmployee | 135 | 172 | 34 | 6 | 6 | |
| Severance costs | $ 0 | $ 471 | ||||
| Restructure expense | 2,574 | |||||
| Employee Severance | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Restructure expense | $ 2,261 | |||||
| Other restructuring costs | $ 64 | |||||
| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Restructure expense | 232 | |||||
| Other restructuring costs | 313 | |||||
| Location, Statement of Income, Balance [Axis]: alco:OperatingExpensesIncome | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Restructure expense | $ 2,029 | |||||
| X | ||||||||||
- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of positions eliminated during the period as a result of restructuring activities. No definition available.
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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