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Investments Investments (Equity in Earnings (Loss) of Unconsolidated Subsidiaries) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Losses recorded from affordable housing projects | $ 5,612 | $ 3,964 | $ 9,712 | $ 7,272
Tax credits recognized related to affordable housing projects | 4,624 | 4,612 | 9,237 | 9,225
Losses from historic tax credit investments | 1,506 | 2,350 | 3,382 | 2,766
Tax credits recognized related to historic tax credit investments | $ 693 | $ 820 | $ 1,355 | $ 2,624

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- Definition Historic Tax Credits Investments and Other Tax Benefits, Amount + References No definition available. + Details
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- Definition Income (Loss) from Historical Projects, Equity Method Investments + References No definition available. + Details
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- Definition Amount of affordable housing tax credits and other tax benefits recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64813897&loc=SL49122993-202985 + Details
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- Definition Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64813897&loc=SL49122993-202985 + Details
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