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Other comprehensive income (loss) - Other Comprehensive Income (Loss) and Related Tax Effects (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Unrealized gain (loss) on investment securities available-for-sale | $ 826 | $ (825) | $ 134 | $ 2,811
Net gain on the sale of investment securities available-for-sale(1) | (147) | (701) | (979) | (861)
Other comprehensive income (loss) gain before taxes | 679 | (1,526) | (845) | 1,950
Income tax expense (benefit) related to other comprehensive loss | 237 | (534) | (296) | 682
Other comprehensive income (loss) | 442 | (992) | (549) | 1,268
Reclassification Out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Unrealized gain (loss) on investment securities available-for-sale | 826 | (825) | 134 | 2,811
Net gain on the sale of investment securities available-for-sale(1) | (147) | (701) | (979) | (861)
Other comprehensive income (loss) gain before taxes | 679 | (1,526) | (845) | 1,950
Income tax expense (benefit) related to other comprehensive loss | 237 | (534) | (296) | 682
Other comprehensive income (loss) | $ 442 | $ (992) | $ (549) | $ 1,268

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- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669625-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33775-111570 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 + Details
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