PARENT COMPANY AND REGULATORY RESTRICTIONS (Required Capital and Capital Ratios) (Details) $ in Thousands		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020	Dec. 31, 2019
Leverage capital
Actual Amount		$ 642,302	$ 622,130
Actual Ratio		0.085	0.085
Minimum amount required to be adequately capitalized		$ 301,053	$ 293,382
Minimum ratio required to be adequately capitalized		0.040	0.040
Tier 1 risk-based capital
Actual Amount		$ 642,302	$ 622,130
Actual Ratio		0.113	0.122
Minimum amount required to be adequately capitalized		$ 340,151	$ 307,215
Minimum ratio required to be adequately capitalized		0.060	0.060
Total risk-based capital
Actual Amount		$ 764,283	$ 741,291
Actual Ratio		0.135	0.145
Minimum amount required to be adequately capitalized		$ 453,535	$ 409,620
Minimum ratio required to be adequately capitalized		0.080	0.080
CET1 risk-based capital
Actual Amount		$ 592,302	$ 572,130
Actual Ratio		10.50%	11.20%
Minimum amount required for capital adequacy purposes		$ 255,113	$ 230,411
Minimum ratio required for capital adequacy purposes		4.50%	4.50%
Capital Conservation Buffer, Year One				1.25%	0.625%
Capital Conservation Buffer, Year Two			1.875%
Capital Conservation Buffer, Year Three	0.025%	2.50%
Capital Conservation Buffer, Year Four	2.50%
Central Bank
PARENT COMPANY AND REGULATORY RESTRICTIONS
Equity in undistributed losses		$ (339,400)
Retained earnings		145,700	$ 114,000
Leverage capital
Actual Amount		$ 675,331	$ 652,987
Actual Ratio		0.090	0.089
Minimum amount required to be adequately capitalized		$ 300,584	$ 292,877
Minimum ratio required to be adequately capitalized		0.040	0.040
Minimum amount required to be well-capitalized		$ 375,730	$ 366,096
Minimum ratio required to be well-capitalized		0.050	0.050
Tier 1 risk-based capital
Actual Amount		$ 675,331	$ 652,987
Actual Ratio		0.119	0.128
Minimum amount required to be adequately capitalized		$ 339,422	$ 306,497
Minimum ratio required to be adequately capitalized		0.060	0.060
Minimum amount required to be well-capitalized		$ 452,563	$ 408,663
Minimum ratio required to be well-capitalized		0.080	0.080
Total risk-based capital
Actual Amount		$ 742,312	$ 717,000
Actual Ratio		0.131	0.140
Minimum amount required to be adequately capitalized		$ 452,563	$ 408,663
Minimum ratio required to be adequately capitalized		0.080	0.080
Minimum amount required to be well-capitalized		$ 565,704	$ 510,828
Minimum ratio required to be well-capitalized		0.100	0.100
CET1 risk-based capital
Actual Amount		$ 675,331	$ 652,987
Actual Ratio		11.90%	12.80%
Minimum amount required for capital adequacy purposes		$ 254,567	$ 229,873
Minimum ratio required for capital adequacy purposes		4.50%	4.50%
Minimum amount equired to be well-capitalized		$ 367,708	$ 332,038
Minimum ratio required to be well-capitalized		6.50%	6.50%