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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS     
The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31:
20222021
 (Dollars in thousands)
Balances not subject to amortization
Goodwill$985,072 $985,072 
Balances subject to amortization
Core deposit intangibles20,757 27,053 
Other intangible assets4,311 5,719 
Total other intangible assets25,068 32,772 
Total goodwill and other intangible assets$1,010,140 $1,017,844 

The changes in the carrying value of goodwill for the periods indicated were as follows:
20222021
 (Dollars in thousands)
Balance at beginning of year$985,072 $506,206 
Acquisitions— 478,866 
Balance at end of year$985,072 $985,072 

The gross carrying amount and accumulated amortization of other intangible assets were as follows at the dates indicated:
December 31
 20222021
 Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount		Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
(Dollars in thousands)
Core deposit intangibles$46,770 $(26,013)$20,757 $48,920 $(21,867)$27,053 
Other intangible assets 6,100 (1,789)4,311 6,390 (671)5,719 
Total$52,870 $(27,802)$25,068 $55,310 $(22,538)$32,772 

The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years:
YearAmount
 (Dollars in thousands)
2023$6,878 
2024$5,905 
2025$4,716 
2026$2,820 
2027$2,077 

The original weighted average amortization period for intangible assets is 9.5 years.