Percentage employer matches of the employee's percentage first three percent of eligible compensation.

No definition available.

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- Definition

Percentage employer matches of the employee's percentage three to six percent of eligible compensation.

+ References

No definition available.

+ Details

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Namespace Prefix:	alrs_
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- Definition

The number of benefit plans.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- 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.

+ References

No definition available.

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

The shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480489/718-40-50-1

+ Details

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Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Employee Benefits - Deferral Percentages (Details)	12 Months Ended
Employee Benefits - Deferral Percentages (Details)	Dec. 31, 2023 plan shares	Dec. 31, 2022 shares	Dec. 31, 2021 shares
Employee Benefits
Number of employee retirement plans \| plan	2
401K Plan
Employee Benefits
Company contribution percentage of amounts deferred by employee's up to 3% of compensation	100.00%
Company contribution percentage of amounts deferred by employee's between 3%-6% of compensation	50.00%
401K Plan \| Minimum
Employee Benefits
Percentage of eligible compensation	3.00%
401K Plan \| Maximum
Employee Benefits
Percentage of eligible compensation	6.00%
ESOP
Employee Benefits
Unallocated ESOP shares outstanding \| shares	0	0	0