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COMPREHENSIVE INCOME (LOSS) - Changes of AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Balance, beginning of period | $ 255,568 | $ 276,208 | $ 249,325 | $ 301,405
Other comprehensive (loss) income | (5,276) | (15,824) | 1,805 | (41,028)
Balance, end of period | 248,117 | 258,619 | 248,117 | 258,619
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent |  |  |  |
Balance, beginning of period | (43,271) | (20,492) | (50,370) | 4,809
Other comprehensive (loss) income | (5,265) | (15,815) | 1,834 | (41,116)
Balance, end of period | (48,536) | (36,307) | (48,536) | (36,307)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |
Balance, beginning of period | 474 | 314 | 492 | 217
Other comprehensive (loss) income | (11) | (9) | (29) | 88
Balance, end of period | 463 | 305 | 463 | 305
Accumulated Other Comprehensive (Loss) Income |  |  |  |
Balance, beginning of period | (42,797) | (20,178) | (49,878) | 5,026
Other comprehensive (loss) income | (5,276) | (15,824) | 1,805 | (41,028)
Balance, end of period | $ (48,073) | $ (36,002) | $ (48,073) | $ (36,002)

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