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INVESTMENT SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Schedule of investment securities classified as available for sale
Investment securities available for sale at December 31, 2021 and 2020 were as follows:
2021
(dollars in thousands)Amortized
Cost		Gross
unrealized
gains		Gross
unrealized
losses		Allowance for credit lossesFair
value
Investment securities available for sale
U.S. Treasury securities$65,347 $— $430 $— $64,917 
U.S. government sponsored entities and U.S. agency securities34,569 79 831 — 33,817 
Mortgage-backed securities - agency444,484 2,687 6,901 — 440,270 
Mortgage-backed securities - non-agency29,037 50 381 — 28,706 
State and municipal securities137,904 5,561 366 — 143,099 
Corporate securities193,354 3,128 467 221 195,794 
Total investment securities available for sale$904,695 $11,505 $9,376 $221 $906,603 
2020
(dollars in thousands)Amortized
Cost		Gross
unrealized
gains		Gross
unrealized
losses		Allowance for credit lossesFair
value
Investment securities available for sale
U.S. government sponsored entities and U.S. agency securities$35,287 $377 $97 $— $35,567 
Mortgage-backed securities - agency338,340 6,284 47 — 344,577 
Mortgage-backed securities - non-agency20,411 333 — — 20,744 
State and municipal securities122,488 7,311 5 29 129,765 
Corporate securities145,187 2,205 997 337 146,058 
Total investment securities available for sale$661,713 $16,510 $1,146 $366 $676,711 
Schedule of debt securities
The following is a summary of the amortized cost and fair value of investment securities available for sale, by maturity, at December 31, 2021. Expected maturities may differ from contractual maturities in mortgage-backed securities because the mortgages underlying the securities may be prepaid without penalties. The maturities of all other investment securities available for sale are based on final contractual maturity.
(dollars in thousands)Amortized
cost		Fair
value
Investment securities available for sale
Within one year$9,877 $9,976 
After one year through five years137,694 139,456 
After five years through ten years244,626 248,197 
After ten years38,977 39,998 
Mortgage-backed securities473,521 468,976 
Total investment securities available for sale$904,695 $906,603 
Proceeds from the sale of investment securities available for sale and the resulting gross realized gains and losses for the years ended December 31, 2021, 2020 and 2019 are summarized below:
(dollars in thousands)202120202019
Investment securities available for sale
Proceeds from sales$14,777 $28,256 $33,464 
Gross realized gains on sales537 1,721 786 
Gross realized losses on sales— — (190)
Schedule of major security type
The table below presents a rollforward by major security type for the year ended December 31, 2021 of the allowance for credit losses on investment securities available for sale held at period end:
(dollars in thousands)State and municipal
securities		Corporate
securities		Total
Changes in ACL on investment securities available for sale:
For the year ended December 31, 2021
Balance, beginning of period$29 $337 $366 
Current-period recapture of expected credit losses(29)(116)(145)
Balance, end of period$— $221 $221 
For the year ended December 31, 2020
Balance, beginning of period$— $— $— 
Current-period provision for expected credit losses29 337 366 
Balance, end of period$29 $337 $366 
Schedule of unrealized losses and fair values for investment securities
Unrealized losses and fair values for investment securities available for sale at December 31, 2021 and 2020, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized as follows:
2021
Less than 12 Months12 Months or moreTotal
(dollars in thousands)Fair
value		Unrealized
loss		Fair
value		Unrealized
loss		Fair
value		Unrealized
loss
Investment securities available for sale
U.S. Treasury securities$64,917 $430 $— $— $64,917 $430 
U.S. government sponsored entities and U.S. agency securities17,487 263 9,432 568 26,919 831 
Mortgage-backed securities - agency317,372 6,633 9,051 268 326,423 6,901 
Mortgage-backed securities - non-agency24,095 381 — — 24,095 381 
State and municipal securities27,324 270 2,538 96 29,862 366 
Corporate securities— — — — — — 
Total investment securities available for sale$451,195 $7,977 $21,021 $932 $472,216 $8,909 
2020
Less than 12 Months12 Months or moreTotal
(dollars in thousands)Fair
value		Unrealized
loss		Fair
value		Unrealized
loss		Fair
value		Unrealized
loss
Investment securities available for sale
U.S. government sponsored entities and U.S. agency securities$9,903 $97 $— $— $9,903 $97 
Mortgage-backed securities - agency26,172 47 — — 26,172 47 
Corporate securities20,010 522 — — 20,010 522 
Total investment securities available for sale$56,085 $666 $— $— $56,085 $666 
Schedule of proceeds from the sale of available-for-sale investment securities and equity securities, the resulting gross realized gains (losses) and net unrealized gains (losses)
Proceeds and gross realized gains and losses on sales of equity securities as well as net unrealized gains and losses on equity securities for the years ended December 31, 2021, 2020 and 2019 are summarized below:
(dollars in thousands)202120202019
Equity securities
Proceeds from sales$— $— $105 
Gross realized gains on sales— — 78 
Gross realized losses on sales— — — 
Net unrealized gains (losses)361 577 93