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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Pension and other post retirement obligations: |  |  |  |  |
Amortization of actuarial losses included in net periodic pension cost, gross | $ 911 | $ 820 | $ 1,822 | $ 1,640 |
Tax effect | (219) | (197) | (438) | (394) |
Amortization of actuarial losses included in net periodic pension cost, net | 692 | 623 | 1,384 | 1,246 |
Amortization of prior service cost included in net periodic pension cost, gross | 50 | 16 | 100 | 31 |
Tax effect | (12) | (4) | (24) | (7) |
Amortization of prior service cost included in net periodic pension cost, net | 38 | 12 | 76 | 24 |
Other comprehensive income related to pension and other post retirement obligations, net of taxes | 730 | 635 | 1,460 | 1,270 |
Unrealized gains (losses) on available-for-sale securities: |  |  |  |  |
Net unrealized holding (losses) gains arising during period, gross | 80,074 | 7,832 | (147,353) | 130,260 |
Tax effect | (19,247) | (1,880) | 35,416 | (31,273) |
Net unrealized holding (losses) gains arising during period, net | 60,827 | 5,952 | (111,937) | 98,987 |
Other comprehensive income (loss) related to unrealized gains (losses) on available-for-sale securities, net of taxes | 60,827 | 5,952 | (111,937) | 98,987 |
Other comprehensive (loss) income, net of tax | 61,557 | 6,587 | (110,477) | 100,257 |
Net income | 47,944 | 35,248 | 100,794 | 75,382 |
Comprehensive income (loss) | 109,501 | $ 41,835 | (9,683) | $ 175,639 |
Accumulated Other Comprehensive (Loss) Income By Component: |  |  |  |  |
Unrealized (loss) for pension and other post-retirement obligations | (36,345) |  | (36,345) |  | $ (38,267)
Tax effect | 8,932 |  | 8,932 |  | 9,394
Net unrealized (loss) for pension and other post-retirement obligations | (27,413) |  | (27,413) |  | (28,873)
Unrealized (loss) gain on available-for-sale securities | (27,239) |  | (27,239) |  | 120,114
Tax effect | 6,252 |  | 6,252 |  | (29,164)
Net unrealized (loss) gain on available-for-sale securities | (20,987) |  | (20,987) |  | 90,950
Accumulated other comprehensive (loss) income | $ (48,400) |  | $ (48,400) |  | $ 62,077

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