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Fair Value of Financial Instruments (Reconciliation of Fair Valued Assets Measured on a Recurring Basis) (Details) - Collateralized debt obligations [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning balance | $ 14,872 | $ 16,147 | $ 15,277 | $ 14,920
Total gains (losses) realized/unrealized: Included in other comprehensive income | (1,405) | 421 | (1,810) | 1,648
Ending Balance | $ 13,467 | $ 16,568 | $ 13,467 | $ 16,568

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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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