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SECURITIES | 3 Months Ended
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Mar. 31, 2022
SECURITIES |
SECURITIES | NOTE 3 – SECURITIES The carrying balances of the securities were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ | ​ | 2022 |  | 2021
​ | ​ | (dollars in thousands)
Debt securities available-for-sale | ​ | $ | 933,922 | ​ | $ | 942,168
Debt securities held-to-maturity | ​ | ​ | 438,054 | ​ | ​ | 336,185
Equity securities with readily determinable fair value | ​ | ​ | 3,256 | ​ | ​ | 3,443
Equity securities with no readily determinable fair value | ​ | ​ | 1,927 | ​ | ​ | 1,927
Total securities | ​ | $ | 1,377,159 | ​ | $ | 1,283,723
​ There were no sales of securities during the three months ended March 31, 2022 and 2021. Gains (losses) on securities were as follows during the three months ended March 31: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2022 |  | 2021
​ | ​ | (dollars in thousands)
Net realized gains (losses) on sales | ​ | $ | — | ​ | $ | —
Net unrealized gains (losses) on equity securities: | ​ | ​ | ​ | ​ | ​ | ​
Readily determinable fair value | ​ | ​ | (187) | ​ | ​ | 40
No readily determinable fair value | ​ | ​ | — | ​ | ​ | —
Gains (losses) on securities | ​ | $ | (187) | ​ | $ | 40
​ ​ On March 31, 2022, June 30, 2021, and March 31, 2021, the Company transferred certain debt securities from the available-for-sale category to the held-to-maturity category in order to better reflect the revised intentions of the Company due to possible market value volatility, resulting from a potential rise in interest rates. The following is a summary of the amortized cost and fair value of securities transferred to the held-to-maturity category: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2022 | ​ | June 30, 2021 | ​ | March 31, 2021
​ | ​ | Amortized | ​ | ​ | ​ | Amortized | ​ | ​ | ​ | Amortized | ​ | ​
​ |  | Cost |  | Fair Value |  | Cost |  | Fair Value |  | Cost |  | Fair Value
​ | ​ | (dollars in thousands)
U.S. government agency | ​ | $ | 78,841 | ​ | $ | 71,048 | ​ | $ | — | ​ | $ | — | ​ | $ | 7,593 | ​ | $ | 7,323
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 8,175 | ​ | ​ | 7,651 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 8,776 | ​ | ​ | 8,536
Agency commercial | ​ | ​ | 27,834 | ​ | ​ | 25,432 | ​ | ​ | 99,271 | ​ | ​ | 99,275 | ​ | ​ | 118,792 | ​ | ​ | 113,861
Total | ​ | $ | 114,850 | ​ | $ | 104,131 | ​ | $ | 99,271 | ​ | $ | 99,275 | ​ | $ | 135,161 | ​ | $ | 129,720
​ The debt securities were transferred between categories at fair value, with the transfer date fair value becoming the new amortized cost for each security transferred. The unrealized gain (loss), net of tax, at the date of transfer remains a component of accumulated other comprehensive income, but will be amortized over the remaining life of the debt securities as an adjustment of yield in a manner consistent with amortization of any premium or discount. As a result, the amortization of an unrealized gain (loss) reported in accumulated other comprehensive income will offset or mitigate the effect on interest income of the amortization of the premium or discount for that held-to-maturity debt security. ​ Debt Securities The amortized cost and fair values of debt securities, with gross unrealized gains and losses, are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
March 31, 2022 |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available-for-sale: | ​ | (dollars in thousands)
U.S. Treasury | ​ | $ | 169,966 | ​ | $ | — | ​ | $ | (7,329) | ​ | $ | 162,637
U.S. government agency | ​ | ​ | 51,182 | ​ | ​ | 16 | ​ | ​ | (1,181) | ​ | ​ | 50,017
Municipal | ​ | ​ | 290,714 | ​ | ​ | 603 | ​ | ​ | (15,753) | ​ | ​ | 275,564
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 244,721 | ​ | ​ | 604 | ​ | ​ | (7,797) | ​ | ​ | 237,528
Agency commercial | ​ | ​ | 156,806 | ​ | ​ | 124 | ​ | ​ | (7,619) | ​ | ​ | 149,311
Corporate | ​ | ​ | 59,428 | ​ | ​ | 657 | ​ | ​ | (1,220) | ​ | ​ | 58,865
Total available-for-sale | ​ | ​ | 972,817 | ​ | ​ | 2,004 | ​ | ​ | (40,899) | ​ | ​ | 933,922
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government agency | ​ | ​ | 83,407 | ​ | ​ | — | ​ | ​ | (722) | ​ | ​ | 82,685
Municipal | ​ | ​ | 14,251 | ​ | ​ | 350 | ​ | ​ | — | ​ | ​ | 14,601
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 27,100 | ​ | ​ | 7 | ​ | ​ | (947) | ​ | ​ | 26,160
Agency commercial | ​ | ​ | 313,296 | ​ | ​ | 254 | ​ | ​ | (20,393) | ​ | ​ | 293,157
Total held-to-maturity | ​ | ​ | 438,054 | ​ | ​ | 611 | ​ | ​ | (22,062) | ​ | ​ | 416,603
Total debt securities | ​ | $ | 1,410,871 | ​ | $ | 2,615 | ​ | $ | (62,961) | ​ | $ | 1,350,525
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2021 |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available-for-sale: | ​ | (dollars in thousands)
U.S. Treasury | ​ | $ | 109,002 | ​ | $ | 328 | ​ | $ | (354) | ​ | $ | 108,976
U.S. government agency | ​ | ​ | 129,269 | ​ | ​ | 1,303 | ​ | ​ | (2,467) | ​ | ​ | 128,105
Municipal | ​ | ​ | 293,837 | ​ | ​ | 6,144 | ​ | ​ | (2,904) | ​ | ​ | 297,077
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 178,236 | ​ | ​ | 2,149 | ​ | ​ | (919) | ​ | ​ | 179,466
Agency commercial | ​ | ​ | 164,875 | ​ | ​ | 1,234 | ​ | ​ | (2,048) | ​ | ​ | 164,061
Corporate | ​ | ​ | 63,141 | ​ | ​ | 1,638 | ​ | ​ | (296) | ​ | ​ | 64,483
Total available-for-sale | ​ | ​ | 938,360 | ​ | ​ | 12,796 | ​ | ​ | (8,988) | ​ | ​ | 942,168
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government agency | ​ | ​ | 12,349 | ​ | ​ | 42 | ​ | ​ | (51) | ​ | ​ | 12,340
Municipal | ​ | ​ | 15,666 | ​ | ​ | 809 | ​ | ​ | — | ​ | ​ | 16,475
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 20,555 | ​ | ​ | 196 | ​ | ​ | (102) | ​ | ​ | 20,649
Agency commercial | ​ | ​ | 287,615 | ​ | ​ | 1,749 | ​ | ​ | (2,801) | ​ | ​ | 286,563
Total held-to-maturity | ​ | ​ | 336,185 | ​ | ​ | 2,796 | ​ | ​ | (2,954) | ​ | ​ | 336,027
Total debt securities | ​ | $ | 1,274,545 | ​ | $ | 15,592 | ​ | $ | (11,942) | ​ | $ | 1,278,195
​ ​ As of March 31, 2022 and December 31, 2021, the Bank had debt securities with a carrying value of $304.9 million and $353.3 million, respectively, which were pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes required or permitted by law. The Company has no direct exposure to the State of Illinois, but approximately 46% of the municipal portfolio consists of debt securities issued by municipalities located in Illinois as of March 31, 2022. Approximately 94% of such debt securities were general obligation issues as of March 31, 2022. The amortized cost and fair value of debt securities by contractual maturity, as of March 31, 2022, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available-for-Sale | ​ | Held-to-Maturity
​ |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
​ | ​ | (dollars in thousands)
Due in 1 year or less | ​ | $ | 26,200 | ​ | $ | 26,286 | ​ | $ | 2,136 | ​ | $ | 2,161
Due after 1 year through 5 years | ​ | ​ | 191,896 | ​ | ​ | 187,331 | ​ | ​ | 14,726 | ​ | ​ | 14,663
Due after 5 years through 10 years | ​ | ​ | 268,930 | ​ | ​ | 253,700 | ​ | ​ | 54,808 | ​ | ​ | 54,474
Due after 10 years | ​ | ​ | 84,264 | ​ | ​ | 79,766 | ​ | ​ | 25,988 | ​ | ​ | 25,988
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | 244,721 | ​ | ​ | 237,528 | ​ | ​ | 27,100 | ​ | ​ | 26,160
Agency commercial | ​ | ​ | 156,806 | ​ | ​ | 149,311 | ​ | ​ | 313,296 | ​ | ​ | 293,157
Total | ​ | $ | 972,817 | ​ | $ | 933,922 | ​ | $ | 438,054 | ​ | $ | 416,603
​ ​ The following tables present gross unrealized losses and fair value of debt securities, aggregated by category and length of time that individual debt securities have been in a continuous unrealized loss position, as of March 31, 2022 and December 31, 2021: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Investments in a Continuous Unrealized Loss Position
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
March 31, 2022 |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value
Available-for-sale: | ​ | (dollars in thousands)
U.S. Treasury | ​ | $ | (7,329) | ​ | $ | 162,637 | ​ | $ | — | ​ | $ | — | ​ | $ | (7,329) | ​ | $ | 162,637
U.S. government agency | ​ | ​ | (1,181) | ​ | ​ | 42,715 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (1,181) | ​ | ​ | 42,715
Municipal | ​ | ​ | (9,031) | ​ | ​ | 157,069 | ​ | ​ | (6,722) | ​ | ​ | 53,718 | ​ | ​ | (15,753) | ​ | ​ | 210,787
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | (7,647) | ​ | ​ | 191,824 | ​ | ​ | (150) | ​ | ​ | 3,931 | ​ | ​ | (7,797) | ​ | ​ | 195,755
Agency commercial | ​ | ​ | (5,579) | ​ | ​ | 108,665 | ​ | ​ | (2,040) | ​ | ​ | 24,031 | ​ | ​ | (7,619) | ​ | ​ | 132,696
Corporate | ​ | ​ | (450) | ​ | ​ | 14,550 | ​ | ​ | (770) | ​ | ​ | 4,190 | ​ | ​ | (1,220) | ​ | ​ | 18,740
Total available-for-sale | ​ | ​ | (31,217) | ​ | ​ | 677,460 | ​ | ​ | (9,682) | ​ | ​ | 85,870 | ​ | ​ | (40,899) | ​ | ​ | 763,330
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government agency | ​ | ​ | (722) | ​ | ​ | 11,636 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (722) | ​ | ​ | 11,636
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | (947) | ​ | ​ | 17,789 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (947) | ​ | ​ | 17,789
Agency commercial | ​ | ​ | (20,148) | ​ | ​ | 255,033 | ​ | ​ | (245) | ​ | ​ | 2,363 | ​ | ​ | (20,393) | ​ | ​ | 257,396
Total held-to-maturity | ​ | ​ | (21,817) | ​ | ​ | 284,458 | ​ | ​ | (245) | ​ | ​ | 2,363 | ​ | ​ | (22,062) | ​ | ​ | 286,821
Total debt securities | ​ | $ | (53,034) | ​ | $ | 961,918 | ​ | $ | (9,927) | ​ | $ | 88,233 | ​ | $ | (62,961) | ​ | $ | 1,050,151
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Investments in a Continuous Unrealized Loss Position
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
December 31, 2021 |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value
Available-for-sale: | ​ | (dollars in thousands)
U.S. Treasury | ​ | $ | (354) | ​ | $ | 68,410 | ​ | $ | — | ​ | $ | — | ​ | $ | (354) | ​ | $ | 68,410
U.S. government agency | ​ | ​ | (2,183) | ​ | ​ | 80,219 | ​ | ​ | (284) | ​ | ​ | 5,578 | ​ | ​ | (2,467) | ​ | ​ | 85,797
Municipal | ​ | ​ | (2,018) | ​ | ​ | 89,424 | ​ | ​ | (886) | ​ | ​ | 17,327 | ​ | ​ | (2,904) | ​ | ​ | 106,751
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | (851) | ​ | ​ | 91,703 | ​ | ​ | (68) | ​ | ​ | 4,305 | ​ | ​ | (919) | ​ | ​ | 96,008
Agency commercial | ​ | ​ | (1,921) | ​ | ​ | 113,111 | ​ | ​ | (127) | ​ | ​ | 6,443 | ​ | ​ | (2,048) | ​ | ​ | 119,554
Corporate | ​ | ​ | (7) | ​ | ​ | 2,737 | ​ | ​ | (289) | ​ | ​ | 4,671 | ​ | ​ | (296) | ​ | ​ | 7,408
Total available-for-sale | ​ | ​ | (7,334) | ​ | ​ | 445,604 | ​ | ​ | (1,654) | ​ | ​ | 38,324 | ​ | ​ | (8,988) | ​ | ​ | 483,928
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government agency | ​ | ​ | (51) | ​ | ​ | 4,949 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (51) | ​ | ​ | 4,949
Mortgage-backed: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency residential | ​ | ​ | (102) | ​ | ​ | 14,932 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (102) | ​ | ​ | 14,932
Agency commercial | ​ | ​ | (2,673) | ​ | ​ | 174,428 | ​ | ​ | (128) | ​ | ​ | 2,776 | ​ | ​ | (2,801) | ​ | ​ | 177,204
Total held-to-maturity | ​ | ​ | (2,826) | ​ | ​ | 194,309 | ​ | ​ | (128) | ​ | ​ | 2,776 | ​ | ​ | (2,954) | ​ | ​ | 197,085
Total debt securities | ​ | $ | (10,160) | ​ | $ | 639,913 | ​ | $ | (1,782) | ​ | $ | 41,100 | ​ | $ | (11,942) | ​ | $ | 681,013
​ ​ As of March 31, 2022, there were 75 debt securities in an unrealized loss position for a period of twelve months or more, and 465 debt securities in an unrealized loss position for a period of less than twelve months. These unrealized losses are primarily a result of fluctuations in market interest rates. In analyzing an issuer’s financial condition, management considers whether the debt securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts’ reports. Management believes that all declines in value of these debt securities are deemed to be temporary. Equity Securities Equity securities with readily determinable fair values are measured at fair value with changes in fair value recognized in gains (losses) on securities on the consolidated statements of income. The Company has elected to measure equity securities with no readily determinable fair value at cost minus impairment, if any, plus or minus changes resulting from observable price changes for identical or similar securities of the same issuer. The initial cost and carrying values of equity securities, with cumulative net unrealized gains and losses are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Readily | ​ | No Readily
​ | ​ | Determinable | ​ | Determinable
March 31, 2022 |  | Fair Value |  | Fair Value
​ | ​ | (dollars in thousands)
Initial cost | ​ | $ | 3,142 | ​ | $ | 2,092
Cumulative net unrealized gains (losses) | ​ | ​ | 114 | ​ | ​ | (165)
Carrying value | ​ | $ | 3,256 | ​ | $ | 1,927
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Readily | ​ | No Readily
​ | ​ | Determinable | ​ | Determinable
December 31, 2021 |  | Fair Value |  | Fair Value
​ | ​ | (dollars in thousands)
Initial cost | ​ | $ | 3,142 | ​ | $ | 2,092
Cumulative net unrealized gains (losses) | ​ | ​ | 301 | ​ | ​ | (165)
Carrying value | ​ | $ | 3,443 | ​ | $ | 1,927
​ As of March 31, 2022 and December 31, 2021, the cumulative net unrealized losses on equity securities with no readily determinable fair value reflect downward adjustments based on observable price changes of an identical investment. There have been no impairments or upward adjustments based on observable price changes to equity securities with no readily determinable fair value.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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