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Investment Securities - Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value (Details) $ in Thousands | Dec. 31, 2019 USD ($) Number | Dec. 31, 2018 USD ($) Number
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Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number | 48 | 490
Fair value, Less than 12 months | $ 23,974 | $ 74,366
Unrealized losses, Less than 12 months | (114) | (536)
Fair value, 12 months or longer | 20,610 | 221,001
Unrealized losses, 12 months or longer | (213) | (5,579)
Total, Fair value | 44,584 | 295,367
Total, Unrealized losses | $ (327) | $ (6,115)
Municipal Obligations, Tax Exempt [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number | 23 | 296
Fair value, Less than 12 months | $ 5,676 | $ 35,898
Unrealized losses, Less than 12 months | (16) | (367)
Fair value, 12 months or longer | 3,473 | 85,921
Unrealized losses, 12 months or longer | (26) | (2,403)
Total, Fair value | 9,149 | 121,819
Total, Unrealized losses | $ (42) | $ (2,770)
Municipal Obligations, Taxable [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number | 4 | 86
Fair value, Less than 12 months | $ 2,563 | $ 8,293
Unrealized losses, Less than 12 months | (55) | (22)
Fair value, 12 months or longer |  | 28,984
Unrealized losses, 12 months or longer |  | (301)
Total, Fair value | 2,563 | 37,277
Total, Unrealized losses | $ (55) | $ (323)
Agency Mortgage-backed Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number | 21 | 101
Fair value, Less than 12 months | $ 15,735 | $ 30,030
Unrealized losses, Less than 12 months | (43) | (146)
Fair value, 12 months or longer | 17,137 | 96,155
Unrealized losses, 12 months or longer | (187) | (2,807)
Total, Fair value | 32,872 | 126,185
Total, Unrealized losses | $ (230) | $ (2,953)
U.S. Treasury Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number |  | 1
Fair value, Less than 12 months |  |
Unrealized losses, Less than 12 months |  |
Fair value, 12 months or longer |  | 1,971
Unrealized losses, 12 months or longer |  | (28)
Total, Fair value |  | 1,971
Total, Unrealized losses |  | $ (28)
U.S. Federal Agency Obligations [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
No. of securities | Number |  | 6
Fair value, Less than 12 months |  | $ 145
Unrealized losses, Less than 12 months |  | (1)
Fair value, 12 months or longer |  | 7,970
Unrealized losses, 12 months or longer |  | (40)
Total, Fair value |  | 8,115
Total, Unrealized losses |  | $ (41)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References No definition available. + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. + References No definition available. + Details
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563 + Details
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