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Fair Value Measurements (Change in Fair Value of Securities Using Level 3 Inputs) (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($)
Obligations of States and Political Subdivisions [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | $ 7,745 | $ 2,894 |
Total net (losses) gains for the period included in OCI | (343) | (99) |
Purchases | 0 | 0 |
Sales | 0 | 0 |
Issuances | 0 | 0 |
Settlements | 0 | 0 |
Transfers into Level 3 | 0 | 5,101 |
Transfers out of Level 3 | 0 | 0 |
Fair value, March 31 | 7,245 | 7,896 |
Period change unrealized losses in earnings for assets held at period end | (157) | 0 |
Period change unrealized gains in OCI for assets held at period end | $ (343) | (99) |
Corporate Securities [Member] | Valuation Technique, Discounted Cash Flow | Minimum | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | (0.044) |  | 0.003
Corporate Securities [Member] | Valuation Technique, Discounted Cash Flow | Maximum | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | 0.053 |  | 0.030
Corporate Securities [Member] | Valuation Technique, Discounted Cash Flow | Weighted Average | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | (0.011) |  | (0.012)
Corporate Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | $ 114,127 | 70,700 |
Total net (losses) gains for the period included in OCI | (6,529) | (2,388) |
Purchases | 2,964 | 21,100 |
Sales | 0 | 0 |
Issuances | 0 | 0 |
Settlements | (69) | 0 |
Transfers into Level 3 | 17,055 | 0 |
Transfers out of Level 3 | (2,941) | 0 |
Fair value, March 31 | 122,802 | 89,322 |
Period change unrealized losses in earnings for assets held at period end | (1,809) | (91) |
Period change unrealized gains in OCI for assets held at period end | (6,529) | (2,388) |
Corporate Securities [Member] | Available-for-sale Securities [Member] | Valuation Technique, Discounted Cash Flow |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total assets measured at fair value | $ 56,510 |  | $ 54,135
Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Valuation Technique, Discounted Cash Flow | Minimum | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | 0.0001 |  | 0.007
Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Valuation Technique, Discounted Cash Flow | Maximum | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | 0.080 |  | 0.080
Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Valuation Technique, Discounted Cash Flow | Weighted Average | Measurement Input, Credit Spread |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input | (0.019) |  | (0.021)
Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | $ 124,909 | 56,375 |
Total net (losses) gains for the period included in OCI | (4,335) | (1,116) |
Purchases | 27,033 | 10,672 |
Sales | 0 | 0 |
Issuances | 0 | 0 |
Settlements | (136) | (412) |
Transfers into Level 3 | 0 | 0 |
Transfers out of Level 3 | (16,096) | (490) |
Fair value, March 31 | 130,918 | 64,889 |
Period change unrealized losses in earnings for assets held at period end | (472) | (143) |
Period change unrealized gains in OCI for assets held at period end | (4,335) | (1,116) |
Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Available-for-sale Securities [Member] | Valuation Technique, Discounted Cash Flow |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total assets measured at fair value | 46,816 |  | $ 34,903
Investments [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | 251,282 | 129,969 |
Total net (losses) gains for the period included in OCI | (11,639) | (3,603) |
Purchases | 29,997 | 31,772 |
Sales | 0 | 0 |
Issuances | 0 | 0 |
Settlements | (227) | (412) |
Transfers into Level 3 | 17,055 | 5,101 |
Transfers out of Level 3 | (22,685) | (490) |
Fair value, March 31 | 261,404 | 162,107 |
Period change unrealized losses in earnings for assets held at period end | (2,445) | (234) |
Period change unrealized gains in OCI for assets held at period end | (11,639) | (3,603) |
Other Assets, Fair Value Disclosure | 158,078 |  | 162,244
Investments [Member] | Available-for-sale Securities [Member] | Valuation Technique, Discounted Cash Flow |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total assets measured at fair value | 103,326 |  | $ 89,038
Residential Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | 245 |  |
Total net (losses) gains for the period included in OCI | (17) |  |
Purchases | 0 |  |
Sales | 0 |  |
Issuances | 0 |  |
Settlements | (11) |  |
Transfers into Level 3 | 0 |  |
Transfers out of Level 3 | (217) |  |
Fair value, March 31 | 0 |  |
Period change unrealized losses in earnings for assets held at period end | 0 |  |
Period change unrealized gains in OCI for assets held at period end | (17) |  |
Commercial Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair value, December 31 | 4,256 |  |
Total net (losses) gains for the period included in OCI | (415) |  |
Purchases | 0 |  |
Sales | 0 |  |
Issuances | 0 |  |
Settlements | (11) |  |
Transfers into Level 3 | 0 |  |
Transfers out of Level 3 | (3,431) |  |
Fair value, March 31 | 439 |  |
Period change unrealized losses in earnings for assets held at period end | (7) |  |
Period change unrealized gains in OCI for assets held at period end | (415) |  |
Gain (Loss) on Investments [Member] | Obligations of States and Political Subdivisions [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | (157) | 0 |
Gain (Loss) on Investments [Member] | Corporate Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | (1,809) | (91) |
Gain (Loss) on Investments [Member] | Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | (472) | (143) |
Gain (Loss) on Investments [Member] | Investments [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | (2,445) | (234) |
Gain (Loss) on Investments [Member] | Residential Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 0 |  |
Gain (Loss) on Investments [Member] | Commercial Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | (7) |  |
Net Investment Income Earned [Member] | Obligations of States and Political Subdivisions [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 0 | 0 |
Net Investment Income Earned [Member] | Corporate Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 4 | 1 |
Net Investment Income Earned [Member] | Collateralized Loan Obligations and Other Asset Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 15 | 3 |
Net Investment Income Earned [Member] | Investments [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 66 | $ 4 |
Net Investment Income Earned [Member] | Residential Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | 0 |  |
Net Investment Income Earned [Member] | Commercial Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total net (losses) gains for the period included in net income | $ 47 |  |

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