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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Pension and other post retirement obligations: |  |  |
Amortization of actuarial losses/(gains) included in net periodic pension cost, gross | $ 5,514 | $ (7,236) | $ (13,904)
Tax effect | (2,108) | 2,774 | 5,374
Amortization of actuarial losses/(gains) included in net periodic pension cost, net | 3,406 | (4,462) | (8,530)
Amortization of prior service cost included in net periodic pension cost, gross | (136) | (170) | (1,698)
Tax effect | 52 | 65 | 657
Amortization of prior service cost included in net periodic pension cost, net | (84) | (105) | (1,041)
Other comprehensive income/(loss) related to pension and other post retirement obligations, net of taxes | 3,322 | (4,567) | (9,571)
Unrealized (losses)/gains on securities: |  |  |
Net unrealized holding (losses)/gains arising during period, gross | (24,042) | (9,209) | 106,040
Tax effect | 9,328 | 2,289 | (39,203)
Net unrealized holding (losses)/gains arising during period, net | (14,714) | (6,920) | 66,837
Reclassification adjustment for net losses included in net income, gross | 0 | 4 | 0
Tax effect | 0 | (2) | 0
Reclassification adjustment for net losses included in net income, net | 0 | 2 | 0
Other comprehensive (loss)/income related to unrealized (losses)/gains on available-for-sale securities, net of taxes | (14,714) | (6,918) | 66,837
Other comprehensive (loss)/income, net of tax | (11,392) | (11,485) | 57,266
Net income | 103,812 | 91,230 | 91,353
Comprehensive income | 92,420 | 79,745 | 148,619
Accumulated Other Comprehensive Income By Component: |  |  |
Unrealized loss for pension and other postretirement obligations | (28,969) | (34,347) | (26,941)
Tax effect | 11,008 | 13,064 | 10,225
Net unrealized loss for pension and other postretirement obligations | (17,961) | (21,283) | (16,716)
Unrealized gain on available-for-sale securities | 41,793 | 65,835 | 75,039
Tax effect | (15,989) | (25,317) | (27,603)
Net unrealized gain on available-for-sale securities | 25,804 | 40,518 | 47,436
Accumulated other comprehensive income | $ 7,843 | $ 19,235 | $ 30,720

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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 + Details
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- Definition Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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