XML 119 R37.htm IDEA: XBRL DOCUMENT
v3.19.3

Treasury Stock Treasury Stock (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2019
Stockholders' Equity Note [Abstract] |
Schedule of treasury stock purchases | The following table illustrates the Company’s treasury stock purchases for the fiscal years ended September 30, 2019, 2018 and 2017:
(in thousands, except share amounts) | Total Number of Shares Purchased |  | Average Price Paid Per Share |  | Total Shares Purchased as Part of Publicly Announced Plan or Program |  | Total Dollar Value of Shares Purchased
Fiscal Year Ended September 30,: |  |  |  |  |  |  |  |  |  |
2019 | 752,234 |  |  | $ | 34.00 |  |  | 1,474,640 |  |  | $ | 25,576 |
2018 | 72,266 |  |  | $ | 30.65 |  |  | 722,406 |  |  | $ | 2,215 |
2017 | 104,145 |  |  | $ | 29.42 |  |  | 650,140 |  |  | $ | 3,064 |
Schedule of treasury stock transactions | The following table outlines the Company’s treasury stock transactions during the past three fiscal years:
(in thousands, except share amounts) | Shares |  | Cost
Balance at September 30, 2016 | 100,610 |  |  | $ | 4,585 |
Purchased | 104,145 |  |  | 3,064 |
Issued to Employees and Directors | (27,440 | ) |  | (1,147 | )
Balance at September 30, 2017 | 177,315 |  |  | 6,502 |
Purchased | 72,266 |  |  | 2,215 |
Issued to Employees and Directors | (33,393 | ) |  | (1,181 | )
Balance at September 30, 2018 | 216,188 |  |  | 7,536 |
Purchased | 752,234 |  |  | 25,576 |
Issued to Employees and Directors | (28,790 | ) |  | (1,169 | )
Balance at September 30, 2019 | 939,632 |  |  | $ | 31,943 |

X
- Definition Schedule Of Information Related To Purchases Of Common Shares [Table Text Block]. + References No definition available. + Details
Name: | alco_ScheduleOfInformationRelatedToPurchasesOfCommonSharesTableTextBlock
Namespace Prefix: | alco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Treasury Stock Transactions [Table Text Block]. + References No definition available. + Details
Name: | alco_ScheduleOfTreasuryStockTransactionsTableTextBlock
Namespace Prefix: | alco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration