XML 60 R45.htm IDEA: XBRL DOCUMENT
v3.22.4

Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Leases |
Schedule of right-of-use assets and lease liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | December 31, |  | December 31,
(dollars in thousands) |  | ​ |  | 2022 |  | 2021
Lease Right-of-Use Assets | ​ | Classification | ​ | ​ | ​ | ​ | ​ | ​
Operating lease right-of-use assets |  | Operating lease right-of-use assets | ​ | $ | 5,419 | ​ | $ | 3,727
Finance lease right-of-use assets |  | Land, premises and equipment, net | ​ |  | — | ​ |  | 87
Total lease right-of-use assets | ​ | ​ | ​ | $ | 5,419 | ​ | $ | 3,814
Lease Liabilities |  |  | ​ |  | ​ | ​ |  |
Operating lease liabilities |  | Operating lease liabilities | ​ | $ | 5,902 | ​ | $ | 4,275
Finance lease liabilities |  | Long-term debt | ​ |  | — | ​ |  | 203
Total lease liabilities | ​ | ​ | ​ | $ | 5,902 | ​ | $ | 4,478
​
Schedule of weighted average remaining lease term and average discount rate | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31, |
​ |  | 2022 |  | 2021 | ​
Weighted-average remaining lease term, years | ​ | ​ | ​ | ​ | ​
Operating leases |  | 5.0 | ​ | 3.4 | ​
Finance leases |  | — | ​ | 0.8 | ​
Weighted-average discount rate |  | ​ | ​ |  | ​
Operating leases |  | 3.1 | % | 2.5 | %
Finance leases |  | — | % | 7.8 | %
​
Schedule of lease costs and other lease information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year ended
​ | ​ | December 31,
(dollars in thousands) |  | 2022 | ​ | 2021 | ​ | 2020
Lease costs |  | ​ | ​ | ​ | ​ |  | ​ | ​ | ​
Operating lease cost | ​ | $ | 1,799 | ​ | $ | 1,827 | ​ | $ | 2,457
Variable lease cost | ​ |  | 899 | ​ |  | 823 | ​ |  | 1,170
Short-term lease cost | ​ |  | 217 | ​ |  | 181 | ​ |  | 395
Finance lease cost | ​ |  |  | ​ |  |  | ​ |  |
Interest on lease liabilities | ​ |  | 7 | ​ |  | 25 | ​ |  | 42
Amortization of right-of-use assets | ​ |  | 87 | ​ |  | 116 | ​ |  | 116
Sublease income | ​ |  | (238) | ​ |  | (228) | ​ |  | (228)
Net lease cost | ​ | $ | 2,771 | ​ | $ | 2,744 | ​ | $ | 3,952
Other information | ​ | ​ | ​ | ​ |  |  | ​ |  |
Cash paid for amounts included in the measurement of lease liabilities operating cash flows from operating leases | ​ | $ | 1,706 | ​ | $ | 1,763 | ​ | $ | 2,432
Right-of-use assets obtained in exchange for new operating lease liabilities | ​ | ​ | 4,266 | ​ | ​ | 267 | ​ | $ | 1,555
​
Schedule of future minimum payments for leases | ​
​ | ​ | ​ | ​
​ | ​ | Operating
(dollars in thousands) |  | Leases
Twelve months ended | ​ | ​ | ​
2023 | ​ | $ | 1,987
2024 | ​ |  | 1,236
2025 | ​ |  | 1,118
2026 | ​ |  | 936
2027 | ​ |  | 385
Thereafter | ​ |  | 854
Total future minimum lease payments | ​ | $ | 6,516
Amounts representing interest | ​ |  | (614)
Total operating lease liabilities | ​ | $ | 5,902

X
- Definition The tabular disclosure of ROU assets and lease liabilities. + References No definition available. + Details
Name: | alrs_RightOfUseAssetAndLeaseLiabilitiesTableTextBlock
Namespace Prefix: | alrs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tabular disclosure of weighted average remaining lease term and discount rate. + References No definition available. + Details
Name: | alrs_WeightedAverageRemainingLeaseTermAndDiscountRateTableTextBlock
Namespace Prefix: | alrs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration