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Investment Securities - Continuous Unrealized Loss (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value, less than 12 months | $ 9,999,000 |  | $ 9,999,000 |  | $ 95,209,000
Unrealized loss, less than 12 months | (26,000) |  | (26,000) |  | (223,000)
Fair value, 12 months or more | 5,596,000 |  | 5,596,000 |  | 16,206,000
Unrealized loss, 12 months or more | (57,000) |  | (57,000) |  | (327,000)
Total fair value | 15,595,000 |  | 15,595,000 |  | 111,415,000
Total unrealized loss | (83,000) |  | (83,000) |  | (550,000)
OTTI Loss, AFS | 0 | $ 0 | 0 | $ 0 |
Agency bond securities |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value, less than 12 months |  |  |  |  | 14,937,000
Unrealized loss, less than 12 months |  |  |  |  | (36,000)
Fair value, 12 months or more |  |  |  |  | 0
Unrealized loss, 12 months or more |  |  |  |  | 0
Total fair value |  |  |  |  | 14,937,000
Total unrealized loss |  |  |  |  | (36,000)
Agency mortgage-backed securities |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value, less than 12 months | 9,999,000 |  | 9,999,000 |  | 28,939,000
Unrealized loss, less than 12 months | (26,000) |  | (26,000) |  | (103,000)
Fair value, 12 months or more | 5,472,000 |  | 5,472,000 |  | 8,743,000
Unrealized loss, 12 months or more | (56,000) |  | (56,000) |  | (293,000)
Total fair value | 15,471,000 |  | 15,471,000 |  | 37,682,000
Total unrealized loss | (82,000) |  | (82,000) |  | (396,000)
Municipal bonds |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value, less than 12 months | 0 |  | 0 |  | 353,000
Unrealized loss, less than 12 months | 0 |  | 0 |  | (14,000)
Fair value, 12 months or more | 124,000 |  | 124,000 |  | 130,000
Unrealized loss, 12 months or more | (1,000) |  | (1,000) |  | (10,000)
Total fair value | 124,000 |  | 124,000 |  | 483,000
Total unrealized loss | $ (1,000) |  | $ (1,000) |  | (24,000)
Asset-backed securities |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value, less than 12 months |  |  |  |  | 50,980,000
Unrealized loss, less than 12 months |  |  |  |  | (70,000)
Fair value, 12 months or more |  |  |  |  | 7,333,000
Unrealized loss, 12 months or more |  |  |  |  | (24,000)
Total fair value |  |  |  |  | 58,313,000
Total unrealized loss |  |  |  |  | $ (94,000)

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456 + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922890-210455 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922890-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456 + Details
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