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Acquisition of Tokio Millennium Re Acquisition of Tokio Millennium Re (Fair Value of Net Assets Acquired and Liabilities Assumed) (Details) - TMR Group Entities $ in Thousands | Mar. 22, 2019 USD ($) | Mar. 31, 2019 USD ($) state
--- | --- | ---
Business Acquisition [Line Items] |  |
Goodwill | $ 13,094 |
Identifiable finite lived intangible assets (top broker relationships and renewal rights) | $ 11,200 |
Acquired finite-lived intangibles, weighted average amortization period | 10 years 6 months |
Identifiable indefinite lived intangible assets (insurance licenses) | $ 6,800 |
Value of business acquired, amortization period | 2 years |
Value of business acquired | $ 287,600 |
Deferred tax liability related to the estimated fair value of the intangible assets recorded | 2,281 |
Deferred tax liability related to other adjustments | 2,606 |
Insurance licenses |  |
Business Acquisition [Line Items] |  |
Identifiable indefinite lived intangible assets (insurance licenses) | $ 6,800 | $ 6,800
Number of states, ability to write reinsurance | state |  | 50

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