Fair Value - Level 3 Investments (Details) $ in Thousands |
3 Months Ended |
|
Mar. 31, 2018
USD ($)
security
Securities
|
Mar. 31, 2017
USD ($)
Securities
|
| Level 3 reconciliation |
|
|
| Number of securities purchased and new issues | Securities |
8
|
|
| Number of securities, exchange of a rate bond for an unrated refund bond, transfers into level 3 | Securities |
1
|
1
|
| Number of securities transferred from level 1 to level 2 | Securities |
0
|
|
| Level 3 |
|
|
| Level 3 reconciliation |
|
|
| Balance at beginning of period |
$ 3,748
|
$ 4,938
|
| Included in net earnings |
(10)
|
(30)
|
| Included in other comprehensive income |
41
|
(6)
|
| Purchases |
20,576
|
6,259
|
| Sales |
(3,360)
|
(694)
|
| Settlements |
(261)
|
(180)
|
| Transfers in |
645
|
329
|
| Balance at end of period |
$ 21,379
|
10,616
|
| Number of positions (securities) | security |
11
|
|
| Level 3 | Non-binding broker quotes |
|
|
| Level 3 reconciliation |
|
|
| Number of positions (securities) | security |
6
|
|
| Level 3 | Nationally recognized pricing service |
|
|
| Level 3 reconciliation |
|
|
| Number of positions (securities) | security |
4
|
|
| State and Municipal | Level 3 |
|
|
| Level 3 reconciliation |
|
|
| Balance at beginning of period |
$ 3,488
|
3,860
|
| Included in net earnings |
(10)
|
(31)
|
| Included in other comprehensive income |
3
|
15
|
| Purchases |
0
|
0
|
| Sales |
(3,360)
|
(694)
|
| Settlements |
0
|
0
|
| Transfers in |
645
|
329
|
| Balance at end of period |
766
|
3,479
|
| Asset-backed securities | Level 3 |
|
|
| Level 3 reconciliation |
|
|
| Balance at beginning of period |
152
|
412
|
| Included in net earnings |
0
|
0
|
| Included in other comprehensive income |
27
|
1
|
| Purchases |
17,729
|
4,259
|
| Sales |
0
|
0
|
| Settlements |
(261)
|
(88)
|
| Transfers in |
0
|
0
|
| Balance at end of period |
17,647
|
4,584
|
| Corporates | Level 3 |
|
|
| Level 3 reconciliation |
|
|
| Balance at beginning of period |
108
|
666
|
| Included in net earnings |
0
|
1
|
| Included in other comprehensive income |
1
|
(22)
|
| Purchases |
0
|
2,000
|
| Sales |
0
|
0
|
| Settlements |
0
|
(92)
|
| Transfers in |
0
|
0
|
| Balance at end of period |
109
|
2,553
|
| Mortgage- Backed Securities |
|
|
| Level 3 reconciliation |
|
|
| Balance at beginning of period |
0
|
0
|
| Included in net earnings |
0
|
0
|
| Included in other comprehensive income |
10
|
0
|
| Purchases |
|
0
|
| Sales |
|
0
|
| Settlements |
0
|
0
|
| Transfers in |
|
0
|
| Balance at end of period |
$ 2,857
|
$ 0
|