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Intangible Assets - Summary of Changes in Intangible Assets (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Dec. 18, 2017 | Dec. 31, 2020 | Dec. 31, 2019
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Amortization |  | $ (1.1) | $ (1.5)
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning of the period |  | 3.9 | 3.9
Goodwill, Additions (Disposals) |  | 0.0 | 0.0
Goodwill, Impairment Loss |  | 0.0 | 0.0
Goodwill, End of the Period |  | 3.9 | 3.9
Intangible Assets and goodwill, Beginning of the period |  | 23.9 | 26.3
Intangible Assets and Goodwill, Additions (Disposals) |  | 0.0 | 0.0
Goodwill and Intangible Asset Impairment |  | 0.0 | (0.9)
Intangible Assets and goodwill, End of the period |  | 22.8 | 23.9
Trademarks |  |  |
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Intangible Assets, Beginning of the period |  | 1.9 | 2.5
Intangible Assets acquired (disposed) | $ 0.0 |  | 0.0
Amortization |  | (0.3) | (0.6)
Impairment of intangible assets (excluding goodwill) |  | 0.0 | 0.0
Intangible Assets, End of the period |  | 1.6 | 1.9
Agency Relationships |  |  |
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Intangible Assets, Beginning of the period |  | 1.2 | 1.8
Intangible Assets acquired (disposed) | 0.0 |  | 0.0
Amortization |  | (0.6) | (0.6)
Impairment of intangible assets (excluding goodwill) |  | 0.0 | 0.0
Intangible Assets, End of the period |  | 0.6 | 1.2
Renewal Rights |  |  |
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Intangible Assets, Beginning of the period |  | 0.0 | 1.0
Intangible Assets acquired (disposed) |  |  | 0.0
Amortization |  |  | (0.1)
Impairment of intangible assets (excluding goodwill) |  |  | (0.9)
Intangible Assets, End of the period |  |  | 0.0
Non-compete Agreements |  |  |
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Intangible Assets, Beginning of the period |  | 0.2 | 0.4
Intangible Assets acquired (disposed) | $ 0.0 |  | 0.0
Amortization |  | (0.2) | (0.2)
Impairment of intangible assets (excluding goodwill) |  | 0.0 | 0.0
Intangible Assets, End of the period |  | 0.0 | 0.2
Insurance Licenses |  |  |
Finite and Indefinite Lived Intangible Assets [Roll Forward] |  |  |
Intangible Assets, Beginning of the period |  | 16.7 | 16.7
Intangible Assets acquired (disposed) |  | 0.0 | 0.0
Amortization |  | 0.0 | 0.0
Impairment of intangible assets (excluding goodwill) |  | 0.0 | 0.0
Intangible Assets, End of the period |  | $ 16.7 | $ 16.7

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- Definition Finite-lived Intangible Assets Acquired (Disposed) + References No definition available. + Details
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- Definition Intangible Assets and Goodwill, Acquired (Disposed) + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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