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Accumulated Other Comprehensive Income (Loss)
9 Months Ended
Sep. 30, 2023
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Alternative [Abstract]  
Accumulated Other Comprehensive Income (Loss). Accumulated Other Comprehensive Income (Loss)
The following tables present changes in AOCI by component, net of tax, for the periods indicated (dollars in thousands):
Three Months Ended September 30,
20232022
Before TaxTax EffectNet of TaxBefore TaxTax EffectNet of Tax
Unrealized/Unrecognized gains (losses) on debt securities
Balance at beginning of period$(335,359)$95,591 $(239,768)$(277,310)$79,047 $(198,263)
Unrealized holding gains (losses) on debt securities available for sale, net(37,696)10,746 (26,950)(96,937)27,631 (69,306)
Amounts reclassified from AOCI, net33 (9)24 74 (21)53 
Amortization of unrecognized losses on securities transferred to held to maturity1,476 (420)1,056 1,806 (515)1,291 
Balance at end of period$(371,546)$105,908 $(265,638)$(372,367)$106,142 $(266,225)
Unrealized gains (losses) on cash flow hedges
Balance at beginning of period$(29,586)$8,433 $(21,153)$(17,963)$5,119 $(12,844)
Unrealized holding gains (losses) on cash flow hedges, net(7,797)2,220 (5,577)(14,253)4,061 (10,192)
Amounts reclassified from AOCI, net2,290 (652)1,638 370 (104)266 
Balance at end of period$(35,093)$10,001 $(25,092)$(31,846)$9,076 $(22,770)
Total AOCI$(406,639)$115,909 $(290,730)$(404,213)$115,218 $(288,995)
Nine Months Ended September 30,
20232022
Before TaxTax EffectNet of TaxBefore TaxTax EffectNet of Tax
Unrealized/Unrecognized gains (losses) on debt securities
Balance at beginning of period$(352,878)$100,585 $(252,293)$(32,272)$9,199 $(23,073)
Unrealized holding gains (losses) on debt securities available for sale, net(23,600)6,728 (16,872)(296,507)84,519 (211,988)
Unrecognized losses on debt securities transferred to held to maturity from available for sale— — — (48,456)13,812 (34,644)
Amounts reclassified from AOCI, net207 (59)148 (28)(20)
Amortization of unrecognized losses on securities transferred to held to maturity4,725 (1,346)3,379 4,896 (1,396)3,500 
Balance at end of period$(371,546)$105,908 $(265,638)$(372,367)$106,142 $(266,225)
Unrealized gains (losses) on cash flow hedges
Balance at beginning of period$(29,350)$8,365 $(20,985)$(958)$273 $(685)
Unrealized holding gains (losses) on cash flow hedges, net(11,975)3,412 (8,563)(30,191)8,604 (21,587)
Amounts reclassified from AOCI, net6,232 (1,776)4,456 (697)199 (498)
Balance at end of period$(35,093)$10,001 $(25,092)$(31,846)$9,076 $(22,770)
Total AOCI$(406,639)$115,909 $(290,730)$(404,213)$115,218 $(288,995)