Employee Benefit Plans (Components of Net Periodic Pension Plan Cost) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Pension [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service Cost | $ 57 | $ 66 | $ 169 | $ 199 |
| Interest Cost | 406 | 437 | 1,219 | 1,311 |
| Expected return on assets | (887) | (764) | (2,661) | (2,292) |
| Amortization of net actuarial/recognized loss | 358 | 269 | 1,074 | 807 |
| Net pension (credit)/expense included in employee benefits | (66) | 8 | (199) | 25 |
| SERP [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service Cost | 31 | 24 | 93 | 71 |
| Interest Cost | 67 | 82 | 201 | 247 |
| Amortization of net actuarial/recognized loss | 47 | 29 | 141 | 87 |
| Amortization of prior service cost | (1) | (1) | (2) | (2) |
| Net pension (credit)/expense included in employee benefits | $ 144 | $ 134 | $ 433 | $ 403 |