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Supplemental Comprehensive Income Disclosures - Related Tax Effects Allocated to Each Component of Other Comprehensive (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Unrealized holding gains on securities arising during the period | $ 2,068 | $ 4,696 | $ 3,165 | $ 12,205
Non-credit related gains (losses) on securities not expected to be sold | 1,374 | (2,535) | 1,549 | (218)
Reclassification adjustment for gains on securities included in net income | (163) | 0 | (163) | (2,185)
Total other comprehensive income | 3,279 | 2,161 | 4,551 | 9,802
Unrealized holding gains on securities arising during the period | (722) | (1,644) | (1,100) | (4,272)
Non-credit related gains (losses) on securities not expected to be sold | (481) | 887 | (542) | 76
Reclassification adjustment for gains on securities included in net income | 57 | 0 | 57 | 765
Total other comprehensive income | (1,146) | (757) | (1,585) | (3,431)
Unrealized holding gains on securities arising during the period | 1,346 | 3,052 | 2,065 | 7,933
Non-credit related gains (losses) on securities not expected to be sold | 893 | (1,648) | 1,007 | (142)
Reclassification adjustment for gains on securities included in net income | (106) | 0 | (106) | (1,420)
Total other comprehensive income | $ 2,133 | $ 1,404 | $ 2,966 | $ 6,371

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- Definition Before tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest. + References Reference 1: 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=20435746&loc=SL7669619-108580 Reference 2: 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=20435746&loc=SL7669625-108580 Reference 3: 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=16385135&loc=d3e33775-111570 + Details
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