|
Fair Value (Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
|
Dec. 31, 2014
|
Dec. 31, 2013
|
| Financial Assets: |
|
|
| AFS securities |
$ 763,063 |
$ 808,477 |
| Trading account assets |
2,457 |
2,488 |
| Customer interest rate swap agreement |
|
114 |
| Financial Liabilities: |
|
|
| Interest rate swap agreements |
|
3,912 |
| Customer interest rate swap agreement |
|
114 |
| Obligations of states and political subdivisions [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
26,777 |
31,207 |
| Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
381,308 |
395,903 |
| Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
343,897 |
374,435 |
| Private issue collateralized mortgage obligations [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
6,054 |
6,932 |
| Fair Value, Measurements, Recurring [Member] |
|
|
| Financial Assets: |
|
|
| Trading account assets |
2,457 |
2,488 |
| Customer interest rate swap agreement |
1,140 |
114 |
| Financial Liabilities: |
|
|
| Interest rate swap agreements |
9,143 |
3,912 |
| Customer interest rate swap agreement |
1,140 |
114 |
| Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
5,027 |
|
| Fair Value, Measurements, Recurring [Member] | Obligations of states and political subdivisions [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
26,777 |
31,207 |
| Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
381,308 |
395,903 |
| Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
343,897 |
374,435 |
| Fair Value, Measurements, Recurring [Member] | Private issue collateralized mortgage obligations [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
6,054 |
6,932 |
| Readily Available Market Prices (Level 1) [Member] |
|
|
| Financial Assets: |
|
|
| Trading account assets |
2,457 |
2,488 |
| Readily Available Market Prices (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] |
|
|
| Financial Assets: |
|
|
| Trading account assets |
2,457 |
2,488 |
| Financial Liabilities: |
|
|
| Customer interest rate swap agreement |
0 |
0 |
| Observable Market Data (Level 2) [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
763,063 |
808,477 |
| Customer interest rate swap agreement |
1,140 |
114 |
| Financial Liabilities: |
|
|
| Interest rate swap agreements |
9,143 |
3,912 |
| Customer interest rate swap agreement |
1,140 |
114 |
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] |
|
|
| Financial Assets: |
|
|
| Customer interest rate swap agreement |
1,140 |
114 |
| Financial Liabilities: |
|
|
| Interest rate swap agreements |
9,143 |
3,912 |
| Customer interest rate swap agreement |
1,140 |
114 |
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
5,027 |
|
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of states and political subdivisions [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
26,777 |
31,207 |
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
381,308 |
395,903 |
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
343,897 |
374,435 |
| Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Private issue collateralized mortgage obligations [Member] |
|
|
| Financial Assets: |
|
|
| AFS securities |
6,054 |
6,932 |
| Company Determined Fair Value (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] |
|
|
| Financial Liabilities: |
|
|
| Customer interest rate swap agreement |
$ 0 |
$ 0 |