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Securities - Unrealized Loss Positions (Details) | Mar. 31, 2020 USD ($) security | Dec. 31, 2019 USD ($) security
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Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 28 | 19
Greater than 12 months in an unrealized loss position | security | 12 | 15
Total | 40 | 34
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 7,306,000 | $ 2,602,000
Greater than 12 months in an unrealized loss position | 4,260,000 | 1,181,000
Total | 11,566,000 | 3,783,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 113,063,000 | 129,582,000
Greater than 12 months in an unrealized loss position | 55,109,000 | 45,240,000
Total | $ 168,172,000 | $ 174,822,000
US Government Corporations and Agencies Securities [Member] |  |
Securities Available-for-Sale, Number of Securities |  |
Greater than 12 months in an unrealized loss position | security | 4 | 4
Total | 4 | 4
Securities Available-for-Sale, Unrealized Losses |  |
Greater than 12 months in an unrealized loss position | $ 147,000 | $ 165,000
Total | 147,000 | 165,000
Securities Available-for-Sale, Fair Value |  |
Greater than 12 months in an unrealized loss position | 7,723,000 | 8,337,000
Total | $ 7,723,000 | $ 8,337,000
Mortgage Backed Securities, Issued by US Government Agencies [Member] |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security |  | 3
Greater than 12 months in an unrealized loss position | security |  | 2
Total |  | 5
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position |  | $ 10,000
Greater than 12 months in an unrealized loss position |  | 9,000
Total |  | 19,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position |  | 3,018,000
Greater than 12 months in an unrealized loss position |  | 843,000
Total |  | $ 3,861,000
US States and Political Subdivisions Debt Securities [Member] |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 4 | 6
Greater than 12 months in an unrealized loss position | security | 2 | 2
Total | 6 | 8
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 588,000 | $ 1,665,000
Greater than 12 months in an unrealized loss position | 1,099,000 | 766,000
Total | 1,687,000 | 2,431,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 25,038,000 | 41,043,000
Greater than 12 months in an unrealized loss position | 5,904,000 | 6,593,000
Total | $ 30,942,000 | $ 47,636,000
Collateralized Mortgage Obligations [Member] |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 12 | 2
Greater than 12 months in an unrealized loss position | security | 2 | 2
Total | 14 | 4
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 3,339,000 | $ 26,000
Greater than 12 months in an unrealized loss position | 71,000 | 12,000
Total | 3,410,000 | 38,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 35,811,000 | 9,054,000
Greater than 12 months in an unrealized loss position | 1,051,000 | 1,209,000
Total | $ 36,862,000 | $ 10,263,000
Asset-backed Securities [Member] |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 9 | 4
Greater than 12 months in an unrealized loss position | security | 2 | 1
Total | 11 | 5
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 2,530,000 | $ 839,000
Greater than 12 months in an unrealized loss position | 1,958,000 | 48,000
Total | 4,488,000 | 887,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 36,074,000 | 54,540,000
Greater than 12 months in an unrealized loss position | 29,244,000 | 3,238,000
Total | $ 65,318,000 | $ 57,778,000
Collateralized loan obligations |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 3 | 4
Greater than 12 months in an unrealized loss position | security | 2 | 4
Total | 5 | 8
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 849,000 | $ 62,000
Greater than 12 months in an unrealized loss position | 985,000 | 181,000
Total | 1,834,000 | 243,000
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 16,140,000 | 21,927,000
Greater than 12 months in an unrealized loss position | 11,187,000 | 25,020,000
Total | $ 27,327,000 | $ 46,947,000

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