XML 87 R75.htm IDEA: XBRL DOCUMENT
v3.25.4

Note 10 - Reserve for Losses and Loss Adjustment Expenses - Schedule of Incurred Losses and Allocated Loss Adjustment Expenses on Homeowners' Insurance (Details) - Homeowners Insurance Product Line [Member] $ in Thousands | Dec. 31, 2025 USD ($) Claims | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | $ 361,571 |  |  |  |  |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 60,400 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 46,588 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 282,236 |  |  |  |  |  |  |  |  |
Reserve for losses and loss adjustment expense, net of reinsurance | [1] | 79,335 |  |  |  |  |  |  |  |  |
Short-Duration Insurance Contracts, Accident Year 2016 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 5,737 | $ 5,730 | $ 5,730 | $ 7,125 | $ 7,062 | $ 7,075 | $ 7,090 | $ 6,972 | $ 7,127 | $ 7,450
Insurance contracts, incurred but not reported liabilities | [1] | $ 0 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 1,384 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 5,737 | 5,729 | 5,729 | 7,125 | 7,062 | 7,072 | 7,051 | 6,801 | 6,420 | $ 4,823
Short-Duration Insurance Contracts, Accident Year 2017 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 11,980 | 11,978 | 12,339 | 10,668 | 10,561 | 10,652 | 10,644 | 10,893 | 12,425 |
Insurance contracts, incurred but not reported liabilities | [1] | $ 0 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 3,624 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 11,980 | 11,978 | 12,339 | 10,636 | 10,560 | 10,640 | 10,639 | 10,719 | $ 9,102 |
Short-Duration Insurance Contracts, Accident Year 2018 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 7,978 | 7,978 | 8,010 | 7,941 | 7,950 | 7,939 | 8,103 | 8,163 |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 0 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 1,198 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 7,979 | 7,978 | 7,999 | 7,943 | 7,943 | 7,931 | 7,889 | $ 4,409 |  |
Short-Duration Insurance Contract, Accident Year 2019 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 4,372 | 4,365 | 4,350 | 4,293 | 3,947 | 4,223 | 4,575 |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 0 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 1,690 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 4,372 | 4,365 | 4,345 | 4,170 | 3,757 | 3,510 | $ 2,179 |  |  |
Short-Duration Insurance Contract, Accident Year 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 57,114 | 56,859 | 56,008 | 59,565 | 57,248 | 61,434 |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 5 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 5,161 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 57,086 | 56,712 | 55,619 | 55,504 | 49,222 | $ 31,862 |  |  |  |
Short-Duration Insurance Contract, Accident Year 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 26,798 | 27,902 | 25,733 | 25,158 | 29,836 |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 212 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 5,124 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 26,358 | 26,466 | 24,408 | 22,500 | $ 11,355 |  |  |  |  |
Short-Duration Insurance Contract, Accident Year 2022 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 39,443 | 42,358 | 44,943 | 42,887 |  |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 2,458 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 4,151 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 35,914 | 35,271 | 30,042 | $ 12,647 |  |  |  |  |  |
Short-Duration Insurance Contract, Accident Year 2023 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 32,442 | 36,587 | 40,921 |  |  |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 1,533 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 4,789 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 28,855 | 26,378 | $ 14,226 |  |  |  |  |  |  |
Short-Duration Insurance Contract, Accident Year 2024 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 62,179 | 77,421 |  |  |  |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 13,324 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 8,636 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 45,154 | $ 32,850 |  |  |  |  |  |  |  |
Short-Duration Insurance Contract, Accident Year 2025 [Member] |  |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Insurance contracts, claim expense | [1] | 113,528 |  |  |  |  |  |  |  |  |
Insurance contracts, incurred but not reported liabilities | [1] | $ 42,868 |  |  |  |  |  |  |  |  |
Insurance contracts, number of claims | Claims | [1] | 10,831 |  |  |  |  |  |  |  |  |
Insurance contracts, claims paid and allocated claim adjustment expense | [1] | $ 58,801 |  |  |  |  |  |  |  |  |
[1] | Data presented for these calendar years is required supplementary information, which is unaudited.

X
- 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
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance for credit loss on reinsurance recoverable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477363/944-310-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477409/944-310-45-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-5 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477409/944-310-45-5 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_ReinsuranceRecoverablesAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of incurred-but-not-reported (IBNR) liabilities plus expected development on reported claims, for claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4E Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4D + Details
Name: | us-gaap_ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of incurred claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cumulative number of reported claims for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4D + Details
Name: | us-gaap_ShortdurationInsuranceContractsNumberOfReportedClaims
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ProductOrServiceAxis=plmr_HomeOwnersInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractsAccidentYear2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractsAccidentYear2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |