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Subsequent Events (Details) - USD ($) $ in Thousands | 2 Months Ended | 3 Months Ended
--- | --- | ---
May 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Mar. 31, 2019
Subsequent Event [Line Items] |  |  |  |
Other insurance expenses |  |  | $ 95,346 | $ 85,079
Net investment income |  |  | (55,967) | (50,618)
Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Policyholder's Premium Credit | 15.00% |  |  |
Other insurance expenses |  | $ 20,000 |  |
Alternative Investments [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Net investment income |  |  | $ (6,300) | $ (600)
Minimum [Member] | Alternative Investments [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Net investment income |  | (15,000) |  |
Maximum [Member] | Alternative Investments [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Net investment income |  | (20,000) |  |
Property Insurance [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims |  | $ 35,000 |  |

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- Definition Estimate of catastrophe lossess occurring after the balance sheet date, but before the date of financial statemet issuance. + References No definition available. + Details
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- Definition The percentage of personal and commercial automobile policy premiums for April and May 2020 that we expect to return to our customers in response to COVID-19 shelter in place orders. + References No definition available. + Details
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 + Details
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- Definition Costs incurred during the period, such as those relating to general administration and policy maintenance that do not vary with and are not primarily related to the acquisition or renewal of insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 720 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35755714&loc=d3e28434-158551 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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