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Consolidation Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Net income | $ 158,495 | $ 165,861 | $ 141,827
Unrealized holding (losses) gains arising during year | (5,977) | (26,143) | 47,411
Non-credit portion of other-than-temporary impairments recognized in other comprehensive income | (6) | 0 | 0
Amounts reclassified into net income: Held-to-maturity securities | (92) | (377) | (844)
Amounts reclassified into net income: Non-credit other-than-temporary impairment | 138 | 232 | 1,085
Amounts reclassified into net income: Realized losses (gains) on available for sale securities | 3,064 | (9,110) | (18,762)
Total unrealized (losses) gains on investment securities | (2,873) | (35,398) | 28,890
Net actuarial (loss) gain | (7,852) | 1,585 | (35,189)
Amounts reclassified into net income: Net actuarial loss | 4,200 | 4,600 | 1,236
Total defined benefit pension and post-retirement plans | (3,652) | 6,185 | (33,953)
Other comprehensive loss | (6,525) | (29,213) | (5,063)
Comprehensive income | $ 151,970 | $ 136,648 | $ 136,764

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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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