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Other Investments - Equity Method Investments (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2027 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investment in certain limited partnerships |  | $ 14,490 | $ 0 | $ 13,449 | $ 0 | $ 15,562
Equity Method Investment Summarized Financial Information Assets [Roll Forward] |  |  |  |  |  |
Investment in certain limited partnerships, beginning of period |  | 14,490 | 0 | 13,449 | 0 |
Additions from Merger |  | 0 | 14,153 | 0 | 14,153 |
Capital Contributions |  | 366 | 166 | 878 | 166 |
Equity in net income of limited partnerships |  | 706 | 0 | 2,260 | 0 |
Distribution received related to partnerships |  | 0 | 0 | (1,025) | 0 |
Investment in certain limited partnerships, end of period |  | $ 15,562 | $ 14,319 | $ 15,562 | $ 14,319 |
Scenario, Forecast |  |  |  |  |  |
Equity Method Investment Summarized Financial Information Assets [Roll Forward] |  |  |  |  |  |
Capital Contributions | $ 1,900 |  |  |  |  |
Minimum |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage |  |  |  |  |  | 3.00%
Maximum |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage |  |  |  |  |  | 5.00%

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- Definition Value of Limited Partnership In Equity Method Investments Acquired Through Business Combination + References No definition available. + Details
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- Definition Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities. + 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=109223946&loc=d3e3602-108585 Reference 2: 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(10)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=109223946&loc=SL94080555-108585 + Details
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