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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Net income | $ 71,479 | $ 73,077 | $ 140,258 | $ 145,240
Other comprehensive income (loss), before tax: |  |  |  |
Change in net unrealized gain/loss on securities available for sale during the period | 165,288 | (113,268) | 287,506 | (78,741)
Change in net unrealized gain on securities transferred to held to maturity | (9,185) | (8,207) | (17,351) | (16,094)
Reclassification adjustment for net (gains) losses included in net income | 0 | 0 | (14,903) | (228)
Total securities available for sale and transferred securities, before tax amount | 156,103 | (121,475) | 255,252 | (95,063)
Defined-benefit post-retirement benefit plans: |  |  |  |
Change in the net actuarial gain/loss | 1,553 | 1,749 | 3,106 | 3,498
Remeasurement of projected benefit obligation related to SERP | (862) | 0 | (862) | 0
Reclassification adjustment for SERP settlement costs included in net income | 187 | 0 | 187 | 0
Total defined-benefit post-retirement benefit plans | 878 | 1,749 | 2,431 | 3,498
Other comprehensive income (loss), before tax | 156,981 | (119,726) | 257,683 | (91,565)
Deferred tax expense (benefit) related to other comprehensive income | 54,943 | (41,904) | 90,189 | (32,048)
Other comprehensive income (loss), net of tax | 102,038 | (77,822) | 167,494 | (59,517)
Comprehensive income (loss) | $ 173,517 | $ (4,745) | $ 307,752 | $ 85,723

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
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