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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 3 Months Ended
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Mar. 31, 2020
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
Schedule of Changes in Accumulated Other Comprehensive Income | The following tables summarize the changes within each classification of accumulated other comprehensive income (loss) net of tax for the three months ended March 31, 2020 and 2019: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Unrealized |  | ​ |  |  | ​ |
​ |  | Gains and |  | ​ | ​ | ​ | ​
​ |  | Losses on |  | Defined | ​ | ​ | ​
​ |  | Available- |  | Benefit | ​ | ​ | ​
​ |  | for-Sales |  | Pension | ​ | ​ | ​
(dollars in thousands) |  | Securities |  | Items |  | Total
Balance at January 1, 2020 | ​ | $ | 13,607 | ​ | $ | (1,548) | ​ | $ | 12,059
Other comprehensive income before reclassification | ​ |  | 10,444 | ​ |  | 0 | ​ |  | 10,444
Amounts reclassified from accumulated other comprehensive income | ​ |  | 0 | ​ |  | 47 | ​ |  | 47
Net current period other comprehensive income | ​ |  | 10,444 | ​ |  | 47 | ​ |  | 10,491
Balance at March 31, 2020 | ​ | $ | 24,051 | ​ | $ | (1,501) | ​ | $ | 22,550
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Unrealized |  | ​ |  |  | ​ |
​ |  | Gains and |  | ​ | ​ | ​ | ​ | ​
​ |  | Losses on |  | Defined | ​ | ​ | ​
​ |  | Available- |  | Benefit | ​ | ​ | ​
​ |  | for-Sales |  | Pension | ​ | ​ | ​
(dollars in thousands) |  | Securities |  | Items |  | Total
Balance at January 1, 2019 | ​ | $ | (4,796) | ​ | $ | (1,395) | ​ | $ | (6,191)
Other comprehensive income before reclassification | ​ |  | 8,663 | ​ |  | 0 | ​ |  | 8,663
Amounts reclassified from accumulated other comprehensive income | ​ |  | (23) | ​ |  | 38 | ​ |  | 15
Net current period other comprehensive income | ​ |  | 8,640 | ​ |  | 38 | ​ |  | 8,678
Balance at March 31, 2019 | ​ | $ | 3,844 | ​ | $ | (1,357) | ​ | $ | 2,487
​
Reclassification Accumulated Other Comprehensive Income | Reclassifications out of accumulated comprehensive income for the three months ended March 31, 2020 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​
Details about | ​ | Amount | ​ | Affected Line Item
Accumulated Other | ​ | Reclassified From | ​ | in the Statement
Comprehensive | ​ | Accumulated Other | ​ | Where Net
Income Components |  | Comprehensive Income |  | Income is Presented
​ | ​ | ​ | ​ | ​ | ​
(dollars in thousands) | ​ | ​ | ​ | ​ | ​
Amortization of defined benefit pension items | ​ | $ | (63) | ​ | Other expense
Tax effect | ​ | ​ | 16 | ​ | Income tax expense
​ | ​ | ​ | (47) | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (47) | ​ | Net income
​ Reclassifications out of accumulated comprehensive income for the three months ended March 31, 2019 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​
Details about | ​ | Amount | ​ | Affected Line Item
Accumulated Other | ​ | Reclassified From | ​ | in the Statement
Comprehensive | ​ | Accumulated Other | ​ | Where Net
Income Components |  | Comprehensive Income |  | Income is Presented
​ | ​ | ​ | ​ | ​ | ​
(dollars in thousands) | ​ | ​ | ​ | ​ | ​
Unrealized gains and losses on available-for-sale securities | ​ | $ | 23 | ​ | Net securities gains
Tax effect | ​ | ​ | 0 | ​ | Income tax expense
​ | ​ | ​ | 23 | ​ | Net of tax
Amortization of defined benefit pension items | ​ | ​ | (50) | ​ | Other expense
Tax effect | ​ | ​ | 12 | ​ | Income tax expense
​ | ​ | ​ | (38) | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (15) | ​ | Net income

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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