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INVESTMENT SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2021
INVESTMENT SECURITIES |
Schedule of cost basis and fair values of investment securities | The cost basis and fair values of investment securities are summarized as follows: Investment securities available for sale: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2021
​ | ​ | ​ | ​ | ​ | GROSS | ​ | GROSS | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | UNREALIZED | ​ | UNREALIZED | ​ | FAIR
​ |  | COST BASIS |  | GAINS |  | LOSSES |  | VALUE
​ | ​ | (IN THOUSANDS)
U.S. Agency | ​ | $ | 7,371 | ​ | $ | 86 | ​ | $ | (70) | ​ | $ | 7,387
U.S. Agency mortgage-backed securities | ​ |  | 80,136 | ​ |  | 1,202 | ​ |  | (1,171) | ​ |  | 80,167
Municipal | ​ |  | 20,066 | ​ |  | 851 | ​ |  | (25) | ​ |  | 20,892
Corporate bonds | ​ |  | 53,843 | ​ |  | 1,028 | ​ |  | (146) | ​ |  | 54,725
Total | ​ | $ | 161,416 | ​ | $ | 3,167 | ​ | $ | (1,412) | ​ | $ | 163,171
​ Investment securities held to maturity: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2021
​ | ​ | ​ | ​ | ​ | GROSS | ​ | GROSS | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | UNREALIZED | ​ | UNREALIZED | ​ | FAIR
​ |  | COST BASIS |  | GAINS |  | LOSSES |  | VALUE
​ | ​ | (IN THOUSANDS)
U.S. Agency | ​ | $ | 2,500 | ​ | $ | — | ​ | $ | (11) | ​ | $ | 2,489
U.S. Agency mortgage-backed securities | ​ | ​ | 10,556 | ​ | ​ | 203 | ​ | ​ | (115) | ​ | ​ | 10,644
Municipal | ​ |  | 33,188 | ​ |  | 1,734 | ​ |  | (103) | ​ |  | 34,819
Corporate bonds and other securities | ​ |  | 7,507 | ​ |  | 64 | ​ |  | (7) | ​ |  | 7,564
Total | ​ | $ | 53,751 | ​ | $ | 2,001 | ​ | $ | (236) | ​ | $ | 55,516
​ Investment securities available for sale: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2020
​ | ​ | ​ | ​ | ​ | GROSS | ​ | GROSS | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | UNREALIZED | ​ | UNREALIZED | ​ | FAIR
​ |  | COST BASIS |  | GAINS |  | LOSSES |  | VALUE
​ | ​ | (IN THOUSANDS)
U.S. Agency | ​ | $ | 2,971 | ​ | $ | 181 | ​ | $ | — | ​ | $ | 3,152
U.S. Agency mortgage-backed securities | ​ |  | 65,398 | ​ |  | 2,533 | ​ |  | (18) | ​ |  | 67,913
Municipal | ​ |  | 19,000 | ​ |  | 1,348 | ​ |  | — | ​ |  | 20,348
Corporate bonds | ​ |  | 52,315 | ​ |  | 666 | ​ |  | (229) | ​ |  | 52,752
Total | ​ | $ | 139,684 | ​ | $ | 4,728 | ​ | $ | (247) | ​ | $ | 144,165
​ Investment securities held to maturity: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2020
​ | ​ | ​ | ​ | ​ | GROSS | ​ | GROSS | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | UNREALIZED | ​ | UNREALIZED | ​ | FAIR
​ | ​ | COST BASIS |  | GAINS |  | LOSSES |  | VALUE
​ | ​ | (IN THOUSANDS)
U.S. Agency mortgage-backed securities |  | $ | 8,119 | ​ | $ | 369 | ​ | $ | — | ​ | $ | 8,488
Municipal | ​ |  | 30,076 | ​ |  | 2,455 | ​ |  | (49) | ​ |  | 32,482
Corporate bonds and other securities | ​ |  | 6,027 | ​ |  | 113 | ​ |  | (4) | ​ |  | 6,136
Total | ​ | $ | 44,222 | ​ | $ | 2,937 | ​ | $ | (53) | ​ | $ | 47,106
​
Schedule of investment securities | Investment securities available for sale: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | AT DECEMBER 31, 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | TOTAL
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | U.S. AGENCY | ​ | INVESTMENT
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | MORTGAGE- | ​ | SECURITIES
​ | ​ | ​ | ​ | ​ | ​ | CORPORATE | ​ | BACKED | ​ | AVAILABLE
​ | ​ | U. S. AGENCY | ​ | MUNICIPAL | ​ | BONDS | ​ | SECURITIES | ​ | FOR SALE
​ | ​ | (IN THOUSANDS)
COST BASIS |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Within 1 year | ​ | $ | — |  | $ | 700 |  | $ | 3,002 |  | $ | 22 | ​ | $ | 3,724
After 1 year but within 5 years | ​ |  | — |  |  | 11,099 |  |  | 22,648 |  |  | 2,034 | ​ |  | 35,781
After 5 years but within 10 years | ​ |  | 5,497 |  |  | 8,267 |  |  | 27,543 |  |  | 6,657 | ​ |  | 47,964
Over 10 years | ​ |  | 1,874 |  |  | — |  |  | 650 |  |  | 71,423 | ​ |  | 73,947
Total | ​ | $ | 7,371 |  | $ | 20,066 |  | $ | 53,843 |  | $ | 80,136 | ​ | $ | 161,416
FAIR VALUE | ​ |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year | ​ | $ | — |  | $ | 708 |  | $ | 3,014 | ​ | $ | 23 | ​ | $ | 3,745
After 1 year but within 5 years | ​ |  | — |  |  | 11,647 |  |  | 22,797 | ​ |  | 2,133 | ​ |  | 36,577
After 5 years but within 10 years | ​ |  | 5,438 |  |  | 8,537 |  |  | 28,250 | ​ |  | 6,910 | ​ |  | 49,135
Over 10 years | ​ |  | 1,949 |  |  | — |  |  | 664 | ​ |  | 71,101 | ​ |  | 73,714
Total | ​ | $ | 7,387 |  | $ | 20,892 |  | $ | 54,725 | ​ | $ | 80,167 | ​ | $ | 163,171
​ Investment securities held to maturity:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | AT DECEMBER 31, 2021
​ |  | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​ | TOTAL
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | U.S. AGENCY | ​ | INVESTMENT
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | CORPORATE | ​ | MORTGAGE- | ​ | SECURITIES
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | BONDS AND | ​ | BACKED | ​ | HELD TO
​ | ​ | U.S. AGENCY | ​ | MUNICIPAL | ​ | OTHER | ​ | SECURITIES | ​ | MATURITY
​ | ​ | (IN THOUSANDS)
COST BASIS |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | ​
Within 1 year | ​ | $ | — |  | $ | 200 |  | $ | — |  | $ | — |  | $ | 200
After 1 year but within 5 years | ​ |  | — | ​ |  | 5,130 | ​ |  | 6,021 | ​ |  | 1,037 | ​ |  | 12,188
After 5 years but within 10 years | ​ |  | 2,500 | ​ |  | 21,287 | ​ |  | 500 | ​ |  | 457 | ​ |  | 24,744
Over 10 years | ​ |  | — | ​ |  | 6,571 | ​ |  | 986 | ​ |  | 9,062 | ​ |  | 16,619
Total | ​ | $ | 2,500 | ​ | $ | 33,188 | ​ | $ | 7,507 | ​ | $ | 10,556 | ​ | $ | 53,751
FAIR VALUE | ​ |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year | ​ | $ | — |  | $ | 205 |  | $ | — |  | $ | — |  | $ | 205
After 1 year but within 5 years | ​ |  | — | ​ |  | 5,431 | ​ |  | 6,078 | ​ |  | 1,064 | ​ |  | 12,573
After 5 years but within 10 years | ​ |  | 2,489 | ​ |  | 22,540 | ​ |  | 500 | ​ |  | 485 | ​ |  | 26,014
Over 10 years | ​ |  | — | ​ |  | 6,643 | ​ |  | 986 | ​ |  | 9,095 | ​ |  | 16,724
Total | ​ | $ | 2,489 | ​ | $ | 34,819 | ​ | $ | 7,564 | ​ | $ | 10,644 | ​ | $ | 55,516
Schedule of investments with unrealized losses | The following table presents information concerning investments with unrealized losses as of December 31, 2021 (in thousands): ​ Total investment securities: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2021
​ | ​ | LESS THAN 12 MONTHS | ​ | 12 MONTHS OR LONGER | ​ | TOTAL
​ | ​ | FAIR | ​ | UNREALIZED | ​ | FAIR | ​ | UNREALIZED | ​ | FAIR | ​ | UNREALIZED
​ |  | VALUE |  | LOSSES |  | VALUE |  | LOSSES |  | VALUE |  | LOSSES
U.S. Agency | ​ | $ | 7,419 | ​ | $ | (81) | ​ | $ | — | ​ | $ | — | ​ | $ | 7,419 | ​ | $ | (81)
U.S. Agency mortgage-backed securities | ​ | ​ | 45,422 | ​ | ​ | (972) | ​ | ​ | 6,691 | ​ | ​ | (314) | ​ | ​ | 52,113 | ​ | ​ | (1,286)
Municipal | ​ |  | 7,832 | ​ | ​ | (128) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 7,832 | ​ | ​ | (128)
Corporate bonds and other securities | ​ |  | 14,558 | ​ | ​ | (92) | ​ | ​ | 2,439 | ​ | ​ | (61) | ​ | ​ | 16,997 | ​ | ​ | (153)
Total | ​ | $ | 75,231 | ​ | $ | (1,273) | ​ | $ | 9,130 | ​ | $ | (375) | ​ | $ | 84,361 | ​ | $ | (1,648)
​ The following table presents information concerning investments with unrealized losses as of December 31, 2020 (in thousands): ​ Total investment securities: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | DECEMBER 31, 2020
​ | ​ | LESS THAN 12 MONTHS | ​ | 12 MONTHS OR LONGER | ​ | TOTAL
​ | ​ | FAIR | ​ | UNREALIZED | ​ | FAIR | ​ | UNREALIZED | ​ | FAIR | ​ | UNREALIZED
​ |  | VALUE |  | LOSSES |  | VALUE |  | LOSSES |  | VALUE |  | LOSSES
U.S. Agency mortgage-backed securities | ​ | $ | 6,394 | ​ | $ | (17) | ​ | $ | 123 | ​ | $ | (1) | ​ | $ | 6,517 | ​ | $ | (18)
Municipal | ​ |  | — | ​ | ​ | — | ​ | ​ | 751 | ​ | ​ | (49) | ​ | ​ | 751 | ​ | ​ | (49)
Corporate bonds and other securities | ​ |  | 13,083 | ​ | ​ | (162) | ​ | ​ | 7,929 | ​ | ​ | (71) | ​ | ​ | 21,012 | ​ | ​ | (233)
Total | ​ | $ | 19,477 | ​ | $ | (179) | ​ | $ | 8,803 | ​ | $ | (121) | ​ | $ | 28,280 | ​ | $ | (300)

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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