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Accumulated Other Comprehensive Income (Loss) - Changes, Net of Tax (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Net of tax |  |  |
Balance | $ 2,744,104,000 | $ 2,640,258,000 | $ 2,524,839,000
Net income | 265,735,000 | 185,754,000 | 284,392,000
Other comprehensive income (loss) | (153,297,000) | 63,353,000 | 100,446,000
Balance | 2,656,912,000 | 2,744,104,000 | 2,640,258,000
Incremental non-credit-related impairment loss recognized in earnings on securities | 0 | 0 |
Non-credit OTTI loss on securities |  |  | 0
Accumulated Other Comprehensive Income (Loss) |  |  |
Net of tax |  |  |
Balance | 31,604,000 | (31,749,000) | (132,195,000)
Other comprehensive income (loss) | (153,297,000) | 63,353,000 | 100,446,000
Balance | (121,693,000) | 31,604,000 | (31,749,000)
Unfunded Pension Liability |  |  |
Net of tax |  |  |
Balance | (31,737,000) | (28,082,000) | (28,379,000)
Other comprehensive income (loss) | 7,347,000 | (3,655,000) | 297,000
Balance | (24,390,000) | (31,737,000) | (28,082,000)
Unrealized Loss on Securities |  |  |
Net of tax |  |  |
Balance | 63,341,000 | (3,667,000) | (103,816,000)
Other comprehensive income (loss) | (160,644,000) | 67,008,000 | 100,149,000
Balance | $ (97,303,000) | 63,341,000 | (3,667,000)
Reclassification of net losses (gains) to net income, Pre-tax Amount |  | $ (114,000) | $ (2,715,000)

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