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Investments - Schedule of OTTI Recognized in Earnings for AFS Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |
Total OTTI losses recognized | $ 152 | $ 1,700 | $ 3,420
Less portion of OTTI recognized in accumulated other comprehensive income (loss) |  | 147 |
OTTI recognized in earnings | 152 | 1,553 | 3,420
Does not intend to sell or more-likely-than-not will not be required to sell [Member] |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |
Total OTTI losses recognized | 152 | 1,476 | 1,486
Less portion of OTTI recognized in accumulated other comprehensive income (loss) |  | 147 |
OTTI recognized in earnings | $ 152 | 1,329 | 1,486
Intends to sell or more-likely-than-not will be required to sell before recovery [Member] |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |
OTTI recognized in earnings |  | $ 224 | $ 1,934

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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=109979856&loc=SL6284422-111562 + Details
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- Definition Amount, before tax, of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in other comprehensive income (OCI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=109979856&loc=SL6284422-111562 + Details
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- Definition The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis. + References No definition available. + Details
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