XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 8 - Leases (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
Notes Tables |
Assets and Liabilities, Lessee [Table Text Block] |
|  |  | March 31, |  |  | December 31, |
(dollars in thousands) |  |  | 2025 |  |  | 2024 |
Lease Right-of-Use Assets | Classification |  |  |  |  |  |  |  |
Operating lease right-of-use assets | Operating lease right-of-use assets |  | $ | 12,983 |  |  | $ | 13,438 |
Lease Liabilities |  |  |  |  |  |  |  |  |
Operating lease liabilities | Operating lease liabilities |  | $ | 18,515 |  |  | $ | 18,991 |
Lease, Cost [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Weighted-average remaining lease term, years |  |  |  |  |  |  |  |
Operating leases |  |  | 12.5 |  |  |  | 12.6 |
Weighted-average discount rate |  |  |  |  |  |  |  |
Operating leases |  |  | 4.6 | % |  |  | 4.5 | %
|  | Three months ended |
|  | March 31, |
(dollars in thousands) |  | 2025 |  |  | 2024 |
Lease costs |  |  |  |  |  |  |  |
Operating lease cost |  | $ | 619 |  |  | $ | 461 |
Variable lease cost |  |  | 58 |  |  |  | 266 |
Short-term lease cost |  |  | 290 |  |  |  | 36 |
Finance lease cost |  |  |  |  |  |  |  |
Interest on lease liabilities |  |  | — |  |  |  | — |
Amortization of right-of-use assets |  |  | — |  |  |  | — |
Sublease income |  |  | (41 | ) |  |  | (48 | )
Net lease cost |  | $ | 926 |  |  | $ | 715 |
Other information |  |  |  |  |  |  |  |
Cash paid for amounts included in the measurement of lease liabilities operating cash flows from operating leases |  | $ | 598 |  |  | $ | 460 |
Right-of-use assets obtained in exchange for new operating lease liabilities |  |  | 22 |  |  |  | 108 |
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] |
|  | Operating |
(dollars in thousands) |  | Leases |
Twelve months ended |  |  |  |
March 31, 2026 |  | $ | 2,494 |
March 31, 2027 |  |  | 2,255 |
March 31, 2028 |  |  | 1,820 |
March 31, 2029 |  |  | 1,535 |
March 31, 2030 |  |  | 1,216 |
Thereafter |  |  | 25,218 |
Total future minimum lease payments |  | $ | 34,538 |
Amounts representing interest |  |  | (16,023 | )
Total operating lease liabilities |  | $ | 18,515 |

X
- Definition Tabular disclosure of lessee's assets and liabilities. + References No definition available. + Details
Name: | alrs_AssetsAndLiabilitiesLesseeTableTextBlock
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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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