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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Pension and other post retirement obligations: |  |  |  |  |
Amortization of actuarial losses included in net periodic pension cost, gross | $ 303 | $ 211 | $ 606 | $ 476 |
Tax effect | (74) | (80) | (147) | (182) |
Amortization of actuarial losses included in net periodic pension cost, net | 229 | 131 | 459 | 294 |
Amortization of prior service cost included in net periodic pension cost, gross | (127) | (28) | (254) | (59) |
Tax effect | 31 | 10 | 62 | 22 |
Amortization of prior service cost included in net periodic pension cost, net | (96) | (18) | (192) | (37) |
Unamortized actuarial gain due to plan merger, gross (See Note H) | 0 | 1,857 | 0 | 1,857 |
Tax effect | 0 | (710) | 0 | (710) |
Unamortized actuarial gain due to plan merger, net | 0 | 1,147 | 0 | 1,147 |
Other comprehensive income related to pension and other post retirement obligations, net of taxes | 133 | 1,260 | 267 | 1,404 |
Unrealized (losses) gains on available-for-sale securities: |  |  |  |  |
Net unrealized holding (losses)/gains arising during period, gross | (14,816) | 9,760 | (56,632) | 13,653 |
Tax effect | 3,625 | (3,732) | 13,781 | (5,258) |
Net unrealized holding (losses)/gains arising during period, net | (11,191) | 6,028 | (42,851) | 8,395 |
Reclassification of other comprehensive income due to change in accounting principle - equity securities | (208) | 0 | (208) | 0 |
Other comprehensive (loss)/income related to unrealized (losses)/gains on available-for-sale securities, net of taxes | (11,399) | 6,028 | (43,059) | 8,395 |
Other comprehensive (loss)/income, net of tax | (11,266) | 7,288 | (42,792) | 9,799 |
Net income | 44,606 | 17,191 | 84,712 | 43,448 |
Comprehensive income | 33,340 | $ 24,479 | 41,920 | $ 53,247 |
Accumulated Other Comprehensive Income By Component: |  |  |  |  |
Unrealized loss for pension and other post-retirement obligations | (28,325) |  | (28,325) |  | $ (28,677)
Tax effect | 6,959 |  | 6,959 |  | 7,044
Net unrealized loss for pension and other postretirement obligations | (21,366) |  | (21,366) |  | (21,633)
Unrealized (loss) gain on available-for-sale securities | (32,692) |  | (32,692) |  | 23,940
Tax effect | 7,775 |  | 7,775 |  | (6,006)
Reclassification of other comprehensive income due to change in accounting principle - equity securities | (208) |  | (208) |  | 0
Net unrealized (loss) gain on available-for-sale securities | (25,125) |  | (25,125) |  | 17,934
Accumulated other comprehensive loss | $ (46,491) |  | $ (46,491) |  | $ (3,699)

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