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Fair Value Measurement and Fair Value of Financial Instruments (Reconciliation of Assets and Liabilities Measured on Recurring Basis) (Details) - Equity contracts - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Lending fees |  |  |  |
Reconciliation of the beginning and ending balances for warrants issued by private companies measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |  |  |  |
Total unrealized (losses) gains for the period included in earnings | $ (6) | $ 10 | $ 8,300 | $ (225)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |  |
Reconciliation of the beginning and ending balances for warrants issued by private companies measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |  |  |  |
Beginning balance | 316 | 392 | 421 | 673
Total (losses) gains included in earnings | (6) | 10 | 8,262 | 548
Issuances | 0 | 0 | 0 | 28
Settlements | 0 | 0 | 0 | (847)
Transfers out of Level 3 | 0 | 0 | (8,373) | 0
Ending balance | $ 310 | $ 402 | $ 310 | $ 402

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- Definition Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. + 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 (d) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in income 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)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy. + 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)(3) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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