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Note 7 - Underwriting Information - Schedule of Gross Written Premiums (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 496,288 | $ 385,184 | $ 938,452 | $ 753,262
Percentage of Gross Written Premiums | 100.00% | 100.00% | 100.00% | 100.00%
Palomar Specialty Insurance Company [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 232,983 | $ 193,709 | $ 463,900 | $ 416,366
Percentage of Gross Written Premiums | 46.90% | 50.30% | 49.40% | 55.30%
Palomar Excess And Surplus Insurance Company [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 237,943 | $ 177,109 | $ 428,730 | $ 313,603
Percentage of Gross Written Premiums | 47.90% | 46.00% | 45.70% | 41.60%
Laulima Insurance Company [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 20,134 | $ 14,366 | $ 36,171 | $ 23,293
Percentage of Gross Written Premiums | 4.10% | 3.70% | 3.90% | 3.10%
First Indemnity of America Insurance Company [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 5,228 | $ 0 | $ 9,651 | $ 0
Percentage of Gross Written Premiums | 1.10% | 0.00% | 1.00% | 0.00%
CALIFORNIA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 163,814 | $ 183,396 | $ 303,536 | $ 340,614
Percentage of Gross Written Premiums | 33.00% | 47.60% | 32.30% | 45.20%
TEXAS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 35,708 | $ 28,600 | $ 80,699 | $ 69,396
Percentage of Gross Written Premiums | 7.20% | 7.40% | 8.60% | 9.20%
HAWAII |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 24,544 | $ 18,235 | $ 44,901 | $ 30,751
Percentage of Gross Written Premiums | 4.90% | 4.70% | 4.80% | 4.10%
FLORIDA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 23,979 | $ 29,796 | $ 42,621 | $ 43,720
Percentage of Gross Written Premiums | 4.80% | 7.70% | 4.50% | 5.80%
NEW YORK |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 17,462 | $ 7,980 | $ 32,857 | $ 16,010
Percentage of Gross Written Premiums | 3.50% | 2.10% | 3.50% | 2.10%
WASHINGTON |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 17,188 | $ 13,063 | $ 32,059 | $ 25,066
Percentage of Gross Written Premiums | 3.50% | 3.40% | 3.40% | 3.30%
ILLINOIS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 13,048 | $ 4,870 | $ 18,637 | $ 8,168
Percentage of Gross Written Premiums | 2.70% | 1.30% | 2.00% | 1.10%
MINNESOTA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 12,004 | $ 1,243 | $ 13,042 | $ 2,440
Percentage of Gross Written Premiums | 2.40% | 0.30% | 1.40% | 0.30%
Other States [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 188,541 | $ 98,001 | $ 370,100 | $ 217,097
Percentage of Gross Written Premiums | 38.00% | 25.50% | 39.50% | 28.90%
Earthquake Premiums [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 147,702 | $ 135,029 | $ 277,929 | $ 240,759
Percentage of Gross Written Premiums | 29.80% | 35.10% | 29.70% | 32.00%
Casualty [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 128,222 | $ 58,605 | $ 238,932 | $ 110,539
Percentage of Gross Written Premiums | 25.80% | 15.20% | 25.50% | 14.70%
Inland Marine and Other Property [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 120,031 | $ 93,453 | $ 219,098 | $ 170,329
Percentage of Gross Written Premiums | 24.20% | 24.30% | 23.30% | 22.60%
Fronting Premium [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 60,869 | $ 95,896 | $ 114,810 | $ 190,727
Percentage of Gross Written Premiums | 12.20% | 24.90% | 12.20% | 25.30%
Crop [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gross written premiums | $ 39,464 | $ 2,201 | $ 87,683 | $ 40,908
Percentage of Gross Written Premiums | 8.00% | 0.50% | 9.30% | 5.40%

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