Assets and Liabilities Subject to Enforceable Master Netting Arrangements (Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements) (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Repurchase Agreements [Member] | ||
| Gross Amountsof Recognized(Assets)/Liabilities | $ 48,728 | $ 37,707 |
| Net Amounts of(Assets)/LiabilitiesPresented in theStatement ofCondition | 48,728 | 37,707 |
| Gross Amounts Not Offset in the Statment of Condition: Financial Instruments | (48,728) | (37,707) |
| Gross Amounts Not Offset in the Statment of Condition: Cash Collateral Pledged | ||
| Net amount | ||
| Interest Rate Swap Agreements [Member] | ||
| Gross Amountsof Recognized(Assets)/Liabilities | 133 | (1,043) |
| Net Amounts of(Assets)/LiabilitiesPresented in theStatement ofCondition | 133 | (1,043) |
| Gross Amounts Not Offset in the Statment of Condition: Financial Instruments | (133) | 1,043 |
| Gross Amounts Not Offset in the Statment of Condition: Cash Collateral Pledged | ||
| Net amount |