Investments (Gross Unrealized Losses and Fair Values of Securities) (Details)
$ in Thousands |
Sep. 30, 2020
USD ($)
item
|
Dec. 31, 2019
USD ($)
item
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
$ 41,041
|
$ 34,430
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
$ 137
|
$ 134
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number of Investments | item |
8
|
6
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
$ 12,760
|
$ 70,606
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
$ 5,765
|
$ 4,266
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Investments | item |
9
|
16
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
|
$ 2,722
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
|
$ 6
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number Of Investments | item |
|
3
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
|
$ 9,486
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
|
$ 149
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number Of Investments | item |
|
12
|
| US government agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
$ 16,420
|
$ 24,907
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
$ 30
|
$ 80
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number of Investments | item |
4
|
3
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
|
$ 14,987
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
|
$ 13
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Investments | item |
|
3
|
| Residential mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
$ 8,512
|
$ 4,900
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
$ 93
|
$ 17
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number of Investments | item |
3
|
1
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
|
$ 2,722
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
|
$ 6
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number Of Investments | item |
|
3
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
|
$ 9,486
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
|
$ 149
|
| Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number Of Investments | item |
|
12
|
| Commercial mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |
$ 16,109
|
$ 4,623
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses |
$ 14
|
$ 37
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Number of Investments | item |
1
|
2
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
|
$ 5,793
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
|
$ 55
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Investments | item |
|
3
|
| Collateralized mortgage obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
|
$ 35,472
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
|
$ 109
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Investments | item |
|
1
|
| Collateralized debt obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |
$ 12,760
|
$ 14,354
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses |
$ 5,765
|
$ 4,089
|
| Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Investments | item |
9
|
9
|