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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Pension and other post-retirement obligations: |  |  |
Amortization of actuarial losses included in net periodic pension cost, gross | $ 265 | $ 375 |
Tax effect | (102) | (144) |
Amortization of actuarial losses included in net periodic pension cost, net | 163 | 231 |
Amortization of prior service cost included in net periodic pension cost, gross | (31) | (34) |
Tax effect | 12 | 13 |
Amortization of prior service cost included in net periodic pension cost, net | (19) | (21) |
Other comprehensive income related to pension and other post-retirement obligations, net of taxes | 144 | 210 |
Unrealized gains on available-for-sale securities: |  |  |
Net unrealized holding gains arising during period, gross | 3,893 | 67,257 |
Tax effect | (1,526) | (25,415) |
Net unrealized holding gains arising during period, net | 2,367 | 41,842 |
Other comprehensive income related to unrealized gains on available-for-sale securities, net of taxes | 2,367 | 41,842 |
Other comprehensive income, net of tax | 2,511 | 42,052 |
Net income | 26,257 | 24,403 |
Comprehensive income | 28,768 | $ 66,455 |
Accumulated Other Comprehensive Income By Component: |  |  |
Unrealized loss for pension and other postretirement obligations | (28,735) |  | $ (28,969)
Tax effect | 10,918 |  | 11,008
Net unrealized loss for pension and other postretirement obligations | (17,817) |  | (17,961)
Unrealized gain on available-for-sale securities | 45,686 |  | 41,793
Tax effect | (17,515) |  | (15,989)
Net unrealized gain on available-for-sale securities | 28,171 |  | 25,804
Accumulated other comprehensive income | $ 10,354 |  | $ 7,843

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