|
Accumulated Other Comprehensive Income - Additional Information (Detail) (USD $)
|
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Dec. 31, 2013
|
|
| Accumulated Other Comprehensive Income [Line Items] | |||||
| Net realized gain (loss) on redemption or sale of investment securities | $ 67,000 | $ 611,000 | $ 1,852,000 | $ 923,000 | |
| Net unrealized gain (loss) on available-for-sale securities and interest only strip | 2,800,000 | 5,500,000 | 6,200,000 | 9,000,000 | |
| Net gain on sales of investment securities | 67,000 | 611,000 | 1,852,000 | 923,000 | |
| Recognized in earnings resulting from the redemption of investment securities | 23,000 | 899,000 | 498,000 | 2,400,000 | |
| Other-than-temporary impairment loss on investment securities | 0 | 0 | |||
|
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
|
|||||
| Accumulated Other Comprehensive Income [Line Items] | |||||
| Net gain on sales of investment securities | 67,000 | 611,000 | 1,800,000 | 923,000 | |
|
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Other-than-Temporary Impairment [Member]
|
|||||
| Accumulated Other Comprehensive Income [Line Items] | |||||
| Other-than-temporary impairment loss on investment securities | $ 899,000 | $ 2,400,000 | |||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of unrealized gain (loss) on investments in debt and equity securities classified as available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|