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Fair Value (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | $ 786,211 | $ 784,916
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs |  |
Beginning balance | 6,393 | 18,285
Total realized/unrealized gains or losses - Included in earnings | 0 | 0
Total realized/unrealized gains or losses - Included in other comprehensive income | 77 | (2,840)
Transfers | 0 |
Purchases |  | 0
Settlements | (286) | (9,052)
Ending balance | 6,184 | 6,393
US Government Agencies Debt Securities [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 29,450 | 25,364
State and Municipal Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 235,747 | 233,935
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs |  |
Beginning balance | 3,135 | 3,680
Total realized/unrealized gains or losses - Included in earnings | 0 | 0
Total realized/unrealized gains or losses - Included in other comprehensive income | 0 | 0
Transfers | 0 |
Purchases |  | 0
Settlements | (245) | (545)
Ending balance | 2,890 | 3,135
Collateralized Debt Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 3,294 | 3,258
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs |  |
Beginning balance | 3,258 | 14,605
Total realized/unrealized gains or losses - Included in earnings | 0 | 0
Total realized/unrealized gains or losses - Included in other comprehensive income | 77 | (2,840)
Transfers | 0 |
Purchases |  | 0
Settlements | (41) | (8,507)
Ending balance | 3,294 | 3,258
Mortgage Backed Securities - Residential |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 181,853 | 178,743
Mortgage Backed Securities - Commercial |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale |  | 0
Collateralized Mortgage Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 335,867 | 343,616
Fair Value, Inputs, Level 3 [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 6,184 | 6,393
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 3 [Member] | State and Municipal Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 2,890 | 3,135
Fair Value, Inputs, Level 3 [Member] | Collateralized Debt Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 3,294 | 3,258
Fair Value, Inputs, Level 3 [Member] | Mortgage Backed Securities - Residential |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Mortgage Backed Securities - Commercial |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale |  | 0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] | State and Municipal Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Collateralized Debt Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Mortgage Backed Securities - Residential |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Mortgage Backed Securities - Commercial |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale |  | 0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 780,027 | 778,523
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs |  |
Derivative Assets | 304 | 218
Derivative Liability | 304 | 218
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member] |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 29,450 | 25,364
Fair Value, Inputs, Level 2 [Member] | State and Municipal Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 232,857 | 230,800
Fair Value, Inputs, Level 2 [Member] | Collateralized Debt Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities - Residential |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | 181,853 | 178,743
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities - Commercial |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale |  | 0
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Obligations |  |
Fair value measurement using significant unobservable input |  |
Securities available-for-sale | $ 335,867 | $ 343,616

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