| 2007 | 2006 | 2005 |
Schedule of Available-for-sale Securities [Line Items] | Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] | | | |
| Available-for-sale Securities, Gross Realized Gains (Losses), Cost Basis (Methodology) of Securities Sold | Realized gains and losses are recorded in noninterest income using the specific identification method. | | |
Available-for-sale Securities, Gross Realized Gain (Loss), Net [Abstract] | | | |
| Available-for-sale Securities, Gross Realized Gains | 1,485,000 | 172,000 | 697,000 |
Available-for-sale Securities, Gross Realized Losses | 0 | 0 | 356,000 |
Available-for-sale Securities, Gross Realized Gain (Loss), Net | 1,485,000 | 172,000 | 341,000 |