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SECURITIES (Tables) | 9 Months Ended
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Sep. 30, 2020
SECURITIES |
Schedule of amortized cost and fair value of available-for-sale debt securities at | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) |  | September 30, 2020
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized | ​ | ​ | ​
​ |  | Amortized |  | Holding |  | Holding |  | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of the U.S. Treasury | ​ | $ | 12,228 | ​ | $ | 0 | ​ | $ | (2) | ​ | $ | 12,226
Obligations of U.S. Government agencies | ​ | ​ | 15,348 | ​ | ​ | 1,007 | ​ | ​ | 0 | ​ | ​ | 16,355
Obligations of states and political subdivisions: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Tax-exempt | ​ |  | 104,821 | ​ |  | 5,057 | ​ |  | (210) | ​ |  | 109,668
Taxable | ​ |  | 42,079 | ​ |  | 2,161 | ​ |  | (45) | ​ |  | 44,195
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 44,697 | ​ |  | 1,514 | ​ |  | 0 | ​ |  | 46,211
Residential collateralized mortgage obligations | ​ |  | 67,635 | ​ |  | 1,726 | ​ |  | (24) | ​ |  | 69,337
Commercial mortgage-backed securities | ​ |  | 39,337 | ​ |  | 3,216 | ​ |  | 0 | ​ |  | 42,553
Total available-for-sale debt securities | ​ | $ | 326,145 | ​ | $ | 14,681 | ​ | $ | (281) | ​ | $ | 340,545
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) |  | December 31, 2019
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ |  | ​ |  | Unrealized | ​ | Unrealized | ​ | ​ | ​
​ |  | Amortized |  | Holding |  | Holding |  | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of U.S. Government agencies | ​ | $ | 16,380 | ​ | $ | 620 | ​ | $ | 0 | ​ | $ | 17,000
Obligations of states and political subdivisions: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Tax-exempt | ​ |  | 68,787 | ​ |  | 2,011 | ​ |  | (38) | ​ |  | 70,760
Taxable | ​ |  | 35,446 | ​ |  | 927 | ​ |  | (70) | ​ |  | 36,303
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 58,875 | ​ |  | 472 | ​ |  | (137) | ​ |  | 59,210
Residential collateralized mortgage obligations | ​ |  | 115,025 | ​ |  | 308 | ​ |  | (610) | ​ |  | 114,723
Commercial mortgage-backed securities | ​ |  | 47,765 | ​ |  | 1,069 | ​ |  | (107) | ​ |  | 48,727
Total available-for-sale debt securities | ​ | $ | 342,278 | ​ | $ | 5,407 | ​ | $ | (962) | ​ | $ | 346,723
Schedule of gross unrealized losses and fair value of available-for-sale debt securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
September 30, 2020 |  | Less Than 12 Months |  | 12 Months or More |  | Total
(In Thousands) | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
​ |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Obligations of the U.S. Treasury | ​ | $ | 12,226 | ​ | $ | (2) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 12,226 | ​ | $ | (2)
Obligations of states and political subdivisions: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax-exempt | ​ | ​ | 17,061 | ​ | ​ | (210) | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 17,061 | ​ | ​ | (210)
Taxable | ​ |  | 4,856 | ​ |  | (45) | ​ |  | 0 | ​ |  | 0 | ​ |  | 4,856 | ​ |  | (45)
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential collateralized mortgage obligations | ​ |  | 4,165 | ​ |  | (24) | ​ |  | 0 | ​ |  | 0 | ​ |  | 4,165 | ​ |  | (24)
Total temporary impaired available for sale debt securities | ​ | $ | 38,308 | ​ | $ | (281) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 38,308 | ​ | $ | (281)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2019 |  | Less Than 12 Months |  | 12 Months or More |  | Total
(In Thousands) | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
​ |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Obligations of states and political subdivisions: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Tax-exempt | ​ | $ | 6,429 | ​ | $ | (38) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 6,429 | ​ | $ | (38)
Taxable | ​ |  | 5,624 | ​ |  | (68) | ​ |  | 161 | ​ |  | (2) | ​ |  | 5,785 | ​ |  | (70)
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Residential pass-through securities | ​ |  | 9,771 | ​ |  | (35) | ​ |  | 14,787 | ​ |  | (102) | ​ |  | 24,558 | ​ |  | (137)
Residential collateralized mortgage obligations | ​ |  | 31,409 | ​ |  | (195) | ​ |  | 30,535 | ​ |  | (415) | ​ |  | 61,944 | ​ |  | (610)
Commercial mortgage-backed securities | ​ |  | 0 | ​ |  | 0 | ​ |  | 8,507 | ​ |  | (107) | ​ |  | 8,507 | ​ |  | (107)
Total temporarily impaired available-for-sale debt securities | ​ | $ | 53,233 | ​ | $ | (336) | ​ | $ | 53,990 | ​ | $ | (626) | ​ | $ | 107,223 | ​ | $ | (962)
Schedule of gross realized gains and losses from available-for-sale | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30, | ​ | September 30, | ​ | September 30,
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019
Gross realized gains from sales | ​ | $ | 26 | ​ | $ | 14 | ​ | $ | 78 | ​ | $ | 21
Gross realized losses from sales | ​ |  | (1) | ​ |  | (1) | ​ |  | (53) | ​ |  | (1)
Net realized gains | ​ | $ | 25 | ​ | $ | 13 | ​ | $ | 25 | ​ | $ | 20
Schedule of the amortized cost and fair value of available-for-sale debt securities by contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) | ​ | September 30, 2020
​ | ​ | Amortized | ​ | Fair
​ |  | Cost |  | Value
Due in one year or less | ​ | $ | 14,411 | ​ | $ | 14,469
Due from one year through five years | ​ |  | 45,804 | ​ |  | 47,460
Due from five years through ten years | ​ |  | 37,479 | ​ |  | 40,088
Due after ten years | ​ |  | 76,782 | ​ |  | 80,427
Sub-total | ​ |  | 174,476 | ​ |  | 182,444
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 44,697 | ​ |  | 46,211
Residential collateralized mortgage obligations | ​ |  | 67,635 | ​ |  | 69,337
Commercial mortgage-backed securities | ​ |  | 39,337 | ​ |  | 42,553
Total | ​ | $ | 326,145 | ​ | $ | 340,545

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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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=121645371&loc=d3e27290-111563 + Details
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