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Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
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Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 213,542 | $ 274,788
Gross Unrealized Gains | 2,142 | 1,444
Gross Unrealized Losses | (315) | (94)
Fair Value | 215,369 | 276,138
U.S. Treasury and government sponsored entities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 155,971 | 210,756
Gross Unrealized Gains | 1,629 | 1,133
Gross Unrealized Losses | (48) | (37)
Fair Value | 157,552 | 211,852
Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,295 | 3,288
Gross Unrealized Gains | 41 | 9
Gross Unrealized Losses | 0 | 0
Fair Value | 2,336 | 3,297
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 26,750 | 34,764
Gross Unrealized Gains | 465 | 302
Gross Unrealized Losses | 0 | 0
Fair Value | 27,215 | 35,066
Collateralized loan obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 28,526 | 25,980
Gross Unrealized Gains | 7 | 0
Gross Unrealized Losses | (267) | (57)
Fair Value | $ 28,266 | $ 25,923

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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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- Definition Amount, before tax, of unrealized loss 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 (c) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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