|
Securities (Tables)
|
9 Months Ended |
|
Sep. 30, 2012
|
| Securities [Abstract] |
|
| Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
Gross Unrealized |
|
|
|
|
| |
|
Amortized
Cost |
|
|
Gains |
|
|
(Losses) |
|
|
Estimated Fair
Value |
|
| September 30, 2012 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. government and agency securities
|
|
$ |
2,919 |
|
|
$ |
120 |
|
|
$ |
(12 |
) |
|
$ |
3,027 |
|
|
Obligations of states and political subdivisions
|
|
|
198,954 |
|
|
|
15,488 |
|
|
|
(79 |
) |
|
|
214,363 |
|
|
Corporate and other bonds
|
|
|
9,390 |
|
|
|
275 |
|
|
|
(408 |
) |
|
|
9,257 |
|
|
Mortgage-backed securities
|
|
|
380,790 |
|
|
|
11,360 |
|
|
|
(85 |
) |
|
|
392,065 |
|
|
Other securities
|
|
|
3,233 |
|
|
|
122 |
|
|
|
— |
|
|
|
3,355 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total securities
|
|
$ |
595,286 |
|
|
$ |
27,365 |
|
|
$ |
(584 |
) |
|
$ |
622,067 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| December 31, 2011 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. government and agency securities
|
|
$ |
3,933 |
|
|
$ |
351 |
|
|
$ |
— |
|
|
$ |
4,284 |
|
|
Obligations of states and political subdivisions
|
|
|
189,117 |
|
|
|
11,337 |
|
|
|
(247 |
) |
|
|
200,207 |
|
|
Corporate and other bonds
|
|
|
12,839 |
|
|
|
188 |
|
|
|
(787 |
) |
|
|
12,240 |
|
|
Mortgage-backed securities
|
|
|
390,329 |
|
|
|
10,434 |
|
|
|
(445 |
) |
|
|
400,318 |
|
|
Other securities
|
|
|
3,044 |
|
|
|
77 |
|
|
|
(4 |
) |
|
|
3,117 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total securities
|
|
$ |
599,262 |
|
|
$ |
22,387 |
|
|
$ |
(1,483 |
) |
|
$ |
620,166 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule of gross unrealized losses and fair value of investments |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Less than 12 months |
|
|
More than 12 months |
|
|
Total |
|
| |
|
Fair value |
|
|
Unrealized
Losses |
|
|
Fair value |
|
|
Unrealized
Losses |
|
|
Fair value |
|
|
Unrealized
Losses |
|
|
September 30, 2012
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. government and agency securities
|
|
$ |
6 |
|
|
$ |
(12 |
) |
|
$ |
— |
|
|
$ |
— |
|
|
$ |
6 |
|
|
$ |
(12 |
) |
|
Obligations of states and political subdivisions
|
|
|
6,188 |
|
|
|
(26 |
) |
|
|
1,161 |
|
|
|
(53 |
) |
|
|
7,349 |
|
|
|
(79 |
) |
|
Mortgage-backed securities
|
|
|
30,511 |
|
|
|
(85 |
) |
|
|
— |
|
|
|
— |
|
|
|
30,511 |
|
|
|
(85 |
) |
|
Corporate bonds and other securities
|
|
|
50 |
|
|
|
— |
|
|
|
1,510 |
|
|
|
(408 |
) |
|
|
1,560 |
|
|
|
(408 |
) |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Totals
|
|
$ |
36,755 |
|
|
$ |
(123 |
) |
|
$ |
2,671 |
|
|
$ |
(461 |
) |
|
$ |
39,426 |
|
|
$ |
(584 |
) |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2011
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Obligations of states and political subdivisions
|
|
$ |
5,429 |
|
|
$ |
(152 |
) |
|
$ |
1,090 |
|
|
$ |
(95 |
) |
|
$ |
6,519 |
|
|
$ |
(247 |
) |
|
Mortgage-backed securities
|
|
|
97,203 |
|
|
|
(445 |
) |
|
|
— |
|
|
|
— |
|
|
|
97,203 |
|
|
|
(445 |
) |
|
Corporate bonds and other securities
|
|
|
2,342 |
|
|
|
(165 |
) |
|
|
3,790 |
|
|
|
(626 |
) |
|
|
6,132 |
|
|
|
(791 |
) |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Totals
|
|
$ |
104,974 |
|
|
$ |
(762 |
) |
|
$ |
4,880 |
|
|
$ |
(721 |
) |
|
$ |
109,854 |
|
|
$ |
(1,483 |
) |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule of amortized cost and estimated fair value of securities |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
September 30, 2012 |
|
|
December 31, 2011 |
|
| |
|
Amortized |
|
|
Estimated |
|
|
Amortized |
|
|
Estimated |
|
| |
|
Cost |
|
|
Fair Value |
|
|
Cost |
|
|
Fair Value |
|
|
Due in one year or less
|
|
|
2,923 |
|
|
|
2,971 |
|
|
$ |
6,046 |
|
|
$ |
6,098 |
|
|
Due after one year through five years
|
|
|
16,191 |
|
|
|
16,880 |
|
|
|
18,771 |
|
|
|
19,408 |
|
|
Due after five years through ten years
|
|
|
71,169 |
|
|
|
75,804 |
|
|
|
76,044 |
|
|
|
80,214 |
|
|
Due after ten years
|
|
|
501,770 |
|
|
|
523,059 |
|
|
|
495,357 |
|
|
|
511,329 |
|
|
Other securities
|
|
|
3,233 |
|
|
|
3,355 |
|
|
|
3,044 |
|
|
|
3,117 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total securities available for sale
|
|
$ |
595,286 |
|
|
$ |
622,067 |
|
|
$ |
599,262 |
|
|
$ |
620,166 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule of other-than-temporary impairment |
| |
|
|
|
|
| |
|
OTTI Losses |
|
|
Cumulative credit losses on investment securities, through December 31, 2011
|
|
$ |
400 |
|
|
Cumulative credit losses on investment securities
|
|
|
— |
|
|
Additions for credit losses not previously regognized
|
|
|
— |
|
| |
|
|
|
|
|
Cumulative credit losses on investment securities, through September 30, 2012
|
|
$ |
400 |
|
| |
|
|
|
|
|