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Investment Securities - Available-For-Sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Total | $ 37,219 | $ 30,939
Gross Unrealized Gains | 55 | 10
Gross Unrealized Losses | 1 | 489
Fair Value | 37,273 | 30,460
Trading securities | 9,600 | 8,000
Mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total | 133 | 164
Gross Unrealized Gains | 5 | 10
Gross Unrealized Losses | 0 | 0
Fair Value | 138 | 174
Asset-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total | 211 | 248
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 1 | 1
Fair Value | 210 | 247
Municipal bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total | 195 | 306
Gross Unrealized Gains | 2 | 0
Gross Unrealized Losses | 0 | 4
Fair Value | 197 | 302
Mutual fund |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total | 27,680 | 25,221
Gross Unrealized Gains | 48 | 0
Gross Unrealized Losses | 0 | 484
Fair Value | 27,728 | 24,737
Pooled investment fund |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total | 9,000 | 5,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | $ 9,000 | $ 5,000

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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