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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2020 and 2019:
|  | Unrealized Gains and Losses on Available for Sale Securities (1) |  | Unrealized Gains and Losses on Pension Plan Liability (1) |  | Unrealized Gains and Losses on Hedging Instruments (1) |  | Total (1)
Three Months Ended September 30, 2020 |  | (in thousands)
Beginning balance |  | $ | 155,403 |  |  | $ | (3,815) |  |  | $ | 29,489 |  |  | $ | 181,077 |
Other comprehensive loss before reclassifications |  | (1,442) |  |  | — |  |  | (62) |  |  | (1,504) |
Amounts reclassified from accumulated other comprehensive income (2) |  | — |  |  | 80 |  |  | (2,052) |  |  | (1,972) |
Net current-period other comprehensive income (loss) |  | (1,442) |  |  | 80 |  |  | (2,114) |  |  | (3,476) |
Ending balance |  | $ | 153,961 |  |  | $ | (3,735) |  |  | $ | 27,375 |  |  | $ | 177,601 |
Three Months Ended September 30, 2019 |  |  |  |  |  |  |  |
Beginning balance |  | $ | 37,162 |  |  | $ | (2,055) |  |  | $ | 12,043 |  |  | $ | 47,150 |
Other comprehensive income before reclassifications |  | 14,593 |  |  | — |  |  | 3,137 |  |  | 17,730 |
Amounts reclassified from accumulated other comprehensive income (2) |  | — |  |  | 62 |  |  | (58) |  |  | 4 |
Net current-period other comprehensive income |  | 14,593 |  |  | 62 |  |  | 3,079 |  |  | 17,734 |
Ending balance |  | $ | 51,755 |  |  | $ | (1,993) |  |  | $ | 15,122 |  |  | $ | 64,884 |
Nine Months Ended September 30, 2020 |  |  |  |  |  |  |  |
Beginning balance |  | $ | 33,038 |  |  | $ | (3,974) |  |  | $ | 11,303 |  |  | $ | 40,367 |
Other comprehensive income before reclassifications |  | 121,114 |  |  | — |  |  | 20,526 |  |  | 141,640 |
Amounts reclassified from accumulated other comprehensive income (2) |  | (191) |  |  | 239 |  |  | (4,454) |  |  | (4,406) |
Net current-period other comprehensive income |  | 120,923 |  |  | 239 |  |  | 16,072 |  |  | 137,234 |
Ending balance |  | $ | 153,961 |  |  | $ | (3,735) |  |  | $ | 27,375 |  |  | $ | 177,601 |
Nine Months Ended September 30, 2019 |  |  |  |  |  |  |  |
Beginning balance |  | $ | (33,128) |  |  | $ | (2,177) |  |  | $ | — |  |  | $ | (35,305) |
Other comprehensive income before reclassifications |  | 86,519 |  |  | — |  |  | 15,180 |  |  | 101,699 |
Amounts reclassified from accumulated other comprehensive loss (2) |  | (1,636) |  |  | 184 |  |  | (58) |  |  | (1,510) |
Net current-period other comprehensive income |  | 84,883 |  |  | 184 |  |  | 15,122 |  |  | 100,189 |
Ending balance |  | $ | 51,755 |  |  | $ | (1,993) |  |  | $ | 15,122 |  |  | $ | 64,884 |
__________ (1) All amounts are net of tax. Amounts in parentheses indicate debits. (2) See following table for details about these reclassifications.
Schedule of reclassifications from accumulated other comprehensive income [Table Text Block] | The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2020 and 2019:
|  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  | Affected line Item in the Consolidated
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | Statement of Income
|  | (in thousands) |  |
Unrealized gains on available for sale debt securities |  | $ | — |  |  | $ | — |  |  | $ | 249 |  |  | $ | 2,132 |  |  | Investment securities gains, net
|  | — |  |  | — |  |  | 249 |  |  | 2,132 |  |  | Total before tax
|  | — |  |  | — |  |  | (58) |  |  | (496) |  |  | Income tax provision
|  | $ | — |  |  | $ | — |  |  | $ | 191 |  |  | $ | 1,636 |  |  | Net of tax
Amortization of pension plan liability actuarial losses |  | $ | (104) |  |  | $ | (81) |  |  | $ | (311) |  |  | $ | (240) |  |  | Compensation and employee benefits
|  | (104) |  |  | (81) |  |  | (311) |  |  | (240) |  |  | Total before tax
|  | 24 |  |  | 19 |  |  | 72 |  |  | 56 |  |  | Income tax provision
|  | $ | (80) |  |  | $ | (62) |  |  | $ | (239) |  |  | $ | (184) |  |  | Net of tax
Unrealized gains from hedging instruments |  | $ | 2,673 |  |  | $ | 76 |  |  | $ | 5,803 |  |  | $ | 76 |  |  | Loans
|  | 2,673 |  |  | 76 |  |  | 5,803 |  |  | 76 |  |  | Total before tax
|  | (621) |  |  | (18) |  |  | (1,349) |  |  | (18) |  |  | Income tax provision
|  | $ | 2,052 |  |  | $ | 58 |  |  | $ | 4,454 |  |  | $ | 58 |  |  | Net of tax

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: 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=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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