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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2020
Fair Value Measurements |
Schedule of balance of assets and liabilities which are measured at fair value on a recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2020
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Securities available-for-sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury | ​ | $ | 4,134 | ​ | $ | - | ​ | $ | - | ​ | $ | 4,134
U.S. government agencies | ​ | ​ | - | ​ | ​ | 7,005 | ​ | ​ | - | ​ | ​ | 7,005
U.S. government agencies mortgage-backed | ​ | ​ | - | ​ | ​ | 18,219 | ​ | ​ | - | ​ | ​ | 18,219
States and political subdivisions | ​ | ​ | - | ​ | ​ | 244,987 | ​ | ​ | 4,790 | ​ | ​ | 249,777
Collateralized mortgage obligations | ​ | ​ | - | ​ | ​ | 57,013 | ​ | ​ | - | ​ | ​ | 57,013
Asset-backed securities | ​ | ​ | - | ​ | ​ | 81,585 | ​ | ​ | - | ​ | ​ | 81,585
Collateralized loan obligations | ​ | ​ | - | ​ | ​ | 30,688 | ​ | ​ | - | ​ | ​ | 30,688
Loans held-for-sale | ​ | ​ | - | ​ | ​ | 10,229 | ​ | ​ | - | ​ | ​ | 10,229
Mortgage servicing rights | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 5,010 | ​ | ​ | 5,010
Interest rate swap agreements | ​ | ​ | - | ​ | ​ | 10,506 | ​ | ​ | - | ​ | ​ | 10,506
Mortgage banking derivatives | ​ | ​ | - | ​ | ​ | 1,434 | ​ | ​ | - | ​ | ​ | 1,434
Total | ​ | $ | 4,134 | ​ | $ | 461,666 | ​ | $ | 9,800 | ​ | $ | 475,600
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate swap agreements, including risk participation agreements | ​ | $ | - | ​ | $ | 15,231 | ​ | $ | - | ​ | $ | 15,231
Total | ​ | $ | - | ​ | $ | 15,231 | ​ | $ | - | ​ | $ | 15,231
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Securities available-for-sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury | ​ | $ | 4,036 | ​ | $ | - | ​ | $ | - | ​ | $ | 4,036
U.S. government agencies | ​ | ​ | - | ​ | ​ | 8,337 | ​ | ​ | - | ​ | ​ | 8,337
U.S. government agencies mortgage-backed | ​ | ​ | - | ​ | ​ | 16,588 | ​ | ​ | - | ​ | ​ | 16,588
States and political subdivisions | ​ | ​ | - | ​ | ​ | 243,756 | ​ | ​ | 5,419 | ​ | ​ | 249,175
Collateralized mortgage obligations | ​ | ​ | - | ​ | ​ | 57,984 | ​ | ​ | - | ​ | ​ | 57,984
Asset-backed securities | ​ | ​ | - | ​ | ​ | 81,844 | ​ | ​ | - | ​ | ​ | 81,844
Collateralized loan obligations | ​ | ​ | - | ​ | ​ | 66,684 | ​ | ​ | - | ​ | ​ | 66,684
Loans held-for-sale | ​ | ​ | - | ​ | ​ | 3,061 | ​ | ​ | - | ​ | ​ | 3,061
Mortgage servicing rights | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 5,935 | ​ | ​ | 5,935
Interest rate swap agreements | ​ | ​ | - | ​ | ​ | 2,771 | ​ | ​ | - | ​ | ​ | 2,771
Mortgage banking derivatives | ​ | ​ | - | ​ | ​ | 250 | ​ | ​ | - | ​ | ​ | 250
Total | ​ | $ | 4,036 | ​ | $ | 481,275 | ​ | $ | 11,354 | ​ | $ | 496,665
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate swap agreements, including risk participation agreements | ​ | $ | - | ​ | $ | 5,974 | ​ | $ | - | ​ | $ | 5,974
Total | ​ | $ | - | ​ | $ | 5,974 | ​ | $ | - | ​ | $ | 5,974
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2020
​ | ​ | Securities available-for-sale | ​ | ​ | ​
​ | ​ | States and | ​ | Mortgage
​ | ​ | Political | ​ | Servicing
​ |  | Subdivisions |  | Rights
Beginning balance January 1, 2020 | ​ | $ | 5,419 | ​ | $ | 5,935
Total gains or losses | ​ | ​ | ​ | ​ | ​ | ​
Included in earnings | ​ | ​ | (16) | ​ | ​ | (2,463)
Included in other comprehensive income | ​ | ​ | (216) | ​ | ​ | -
Purchases, issuances, sales, and settlements | ​ | ​ | ​ | ​ | ​ | ​
Purchases | ​ | ​ | 12,900 | ​ | ​ | -
Issuances | ​ | ​ | - | ​ | ​ | 1,813
Settlements | ​ | ​ | (13,297) | ​ | ​ | (275)
Ending balance September 30, 2020 | ​ | $ | 4,790 | ​ | $ | 5,010
​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2019
​ | ​ | Securities available-for-sale | ​ | ​ | ​
​ | ​ | States and | ​ | Mortgage
​ | ​ | Political | ​ | Servicing
​ |  | Subdivisions |  | Rights
Beginning balance January 1, 2019 | ​ | $ | 8,165 | ​ | $ | 7,357
Total gains or losses | ​ | ​ | ​ | ​ | ​ | ​
Included in earnings | ​ | ​ | (25) | ​ | ​ | (2,384)
Included in other comprehensive income | ​ | ​ | 898 | ​ | ​ | -
Purchases, issuances, sales, and settlements | ​ | ​ | ​ | ​ | ​ | ​
Purchases | ​ | ​ | 17,643 | ​ | ​ | -
Issuances | ​ | ​ | - | ​ | ​ | 906
Settlements | ​ | ​ | (20,808) | ​ | ​ | (518)
Ending balance September 30, 2019 | ​ | $ | 5,873 | ​ | $ | 5,361
​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of quantitative information about level 3 fair value measurements | The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of September 30, 2020: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted
Measured at fair value | ​ | ​ | ​ | ​ | ​ | ​ | Unobservable | ​ | ​ | ​ | Average
on a recurring basis: |  | Fair Value |  | Valuation Methodology |  | Inputs |  | Range of Input |  | of Inputs
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mortgage servicing rights | ​ | $ | 5,010 | ​ | Discounted Cash Flow | ​ | Discount Rate | ​ | 11.0 - 15.0% | ​ | 11.0 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | Prepayment Speed | ​ | 0.0 - 42.8% | ​ | 15.4 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of December 31, 2019: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted
Measured at fair value | ​ | ​ | ​ | ​ | ​ | ​ | Unobservable | ​ | ​ | ​ | Average
on a recurring basis: |  | Fair Value |  | Valuation Methodology |  | Inputs |  | Range of Input |  | of Inputs
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mortgage servicing rights | ​ | $ | 5,935 | ​ | Discounted Cash Flow | ​ | Discount Rate | ​ | 10.0 - 58.8% | ​ | 10.1 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | Prepayment Speed | ​ | 0.0 - 69.0% | ​ | 14.1 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of assets measured at fair value on a nonrecurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2020
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Individually evaluated loans1 | ​ | $ | - | ​ | $ | - | ​ | $ | 12,200 | ​ | $ | 12,200
Other real estate owned, net2 | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 2,686 | ​ | ​ | 2,686
Total | ​ | $ | - | ​ | $ | - | ​ | $ | 14,886 | ​ | $ | 14,886
​ 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $14.9 million and a valuation allowance of $2.7 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $1.6 million for the nine months ended September 30, 2020. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $2.7 million at September 30, 2020, which is made up of the outstanding balance of $4.3 million, net of a valuation allowance of $1.6 million and no participations. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Impaired loans1 | ​ | $ | - | ​ | $ | - | ​ | $ | 7,435 | ​ | $ | 7,435
Other real estate owned, net2 | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 5,004 | ​ | ​ | 5,004
Total | ​ | $ | - | ​ | $ | - | ​ | $ | 12,439 | ​ | $ | 12,439
​ 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $8.6 million and a valuation allowance of $1.2 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $783,000 for the year December 31, 2019. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $5.0 million at December 31, 2019, which is made up of the outstanding balance of $12.7 million, net of a valuation allowance of $6.7 million and a participation of $937,000.

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- Definition Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset or liability. + References No definition available. + Details
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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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