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Nature of Operations and Significant Accounting Policies - Recent Accounting Pronouncements (Details) - Adjustment for adoption of guidance - USD ($) $ in Millions | Jan. 01, 2020 | Jan. 01, 2019
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ASU 2016-13 - CECL |  |
Recent Accounting Pronouncements |  |
Cumulative effect adjustment, increase (decrease) to retained earnings | $ (8.4) |
ASU 2016-02 - Leases |  |
Recent Accounting Pronouncements |  |
Cumulative effect adjustment, increase (decrease) to retained earnings |  | $ 4.0

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- Definition Amount of the cumulative effect on retained earnings net of related income tax effect. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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