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Fair Value Measurement and Fair Value of Financial Instruments (Reconciliation of Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Equity warrants | Lending fees |  |  |
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |  |  |
Total unrealized (losses) gains for the period included in earnings | $ (292) | $ 225 | $ 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Equity warrants |  |  |
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |  |  |
Beginning balance | 673 | 679 | 0
Transfer of investment security from held-to-maturity to AFS | 0 | 0 | 0
Total gains included in earnings | 563 | 162 | 0
Issuances | 114 | 65 | 679
Sales | 0 | 0 | 0
Settlements | (929) | (233) | 0
Ending balance | $ 421 | 673 | 679
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other Securities |  |  |
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |  |  |
Beginning balance |  | $ 0 | 0
Transfer of investment security from held-to-maturity to AFS |  |  | 115,615
Total gains included in earnings |  |  | 1,156
Issuances |  |  | 0
Sales |  |  | (116,771)
Settlements |  |  | 0
Ending balance |  |  | $ 0

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- Definition Amount of transfer of financial instrument classified as nonrecurring basis held-to-maturity in level 3 transferred into recurring basis available-for-sale in level 3. + References No definition available. + Details
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