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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclassified out of AOCI) (LOSS) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Income tax benefit (expense) | $ (2,821) | $ (5,118)
Net income | 8,326 | 16,037
Amount Reclassified from AOCI |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Net income | (203) | (242)
Investment Securities |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Reclassification from AOCI, net of tax | 0 | 0
Defined Benefit Plans |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Reclassification from AOCI, net of tax | (203) | (242)
Defined Benefit Plans | Amount Reclassified from AOCI |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (277) | (273)
Amortization of defined benefit plan items, tax | 74 | 31
Reclassification from AOCI, net of tax | (203) | (242)
Amortization of net actuarial loss |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (268) | (263)
Amortization of defined benefit plan items, tax | 72 | 29
Reclassification from AOCI, net of tax | (196) | (234)
Amortization of net actuarial loss | Amount Reclassified from AOCI |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (268) | (263)
Amortization of net transition obligation |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (5) | (5)
Amortization of defined benefit plan items, tax | 1 | 1
Reclassification from AOCI, net of tax | (4) | (4)
Amortization of net transition obligation | Amount Reclassified from AOCI |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (5) | (5)
Amortization of prior service cost |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | (4) | (5)
Amortization of defined benefit plan items, tax | 1 | 1
Reclassification from AOCI, net of tax | (3) | (4)
Amortization of prior service cost | Amount Reclassified from AOCI |  |
Amounts reclassified out of each component of accumulated other comprehensive income |  |
Amortization of defined benefit plan items, before tax | $ (4) | $ (5)

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