XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.22.2

Deposits (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2022
Deposits. |
Schedule of components of deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
(dollars in thousands) |  | 2022 |  | 2021
Noninterest-bearing | ​ | $ | 764,808 | ​ | $ | 938,840
Interest-bearing | ​ |  |  | ​ |  |
Interest-bearing demand | ​ |  | 642,641 | ​ |  | 714,669
Savings accounts | ​ |  | 97,227 | ​ |  | 96,825
Money market savings | ​ |  | 914,423 | ​ |  | 937,305
Time deposits | ​ |  | 200,451 | ​ |  | 232,912
Total interest-bearing | ​ |  | 1,854,742 | ​ |  | 1,981,711
Total deposits | ​ | $ | 2,619,550 | ​ | $ | 2,920,551

X
- Definition Tabular disclosure of components of deposits. + References No definition available. + Details
Name: | alrs_ScheduleOfComponentsOfDepositsTableTextBlock
Namespace Prefix: | alrs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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