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Derivative Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2021
Derivative Financial Instruments |
Summary of the notional amounts and fair values of derivative financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | September 30, 2021 | ​ | December 31, 2020
(dollars in thousands) | Balance Sheet Line Item | ​ | Notional Amount |  | Asset (Liability) Fair Value |  | Notional Amount |  | Asset (Liability) Fair Value
Interest Rate Lock Commitments | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Positive fair values | Other assets | ​ | $ | 159,507 | ​ | 1,712 | ​ | 406,422 | ​ | 6,932
Negative fair values | Other liabilities | ​ | ​ | 58,039 | ​ | (360) | ​ | 22,406 | ​ | (100)
Total | ​ | ​ | ​ | 217,546 | ​ | 1,352 | ​ | 428,828 | ​ | 6,832
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Forward Commitments | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Positive fair values | Other assets | ​ | ​ | 86,000 | ​ | 447 | ​ | — | ​ | —
Negative fair values | Other liabilities | ​ | ​ | 11,500 | ​ | (22) | ​ | 218,000 | ​ | (1,572)
Total | ​ | ​ | ​ | 97,500 | ​ | 425 | ​ | 218,000 | ​ | (1,572)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Customer Derivatives - Interest Rate Swaps | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Positive fair values | Other assets | ​ | ​ | 35,790 | ​ | 1,052 | ​ | 20,979 | ​ | 1,118
Negative fair values | Other liabilities | ​ | ​ | 35,790 | ​ | (1,101) | ​ | 20,979 | ​ | (1,219)
Total | ​ | ​ | ​ | 71,580 | ​ | (49) | ​ | 41,958 | ​ | (101)
Total derivative financial instruments | ​ | ​ | $ | 386,626 | ​ | 1,728 | ​ | 688,786 | ​ | 5,159
Summary of the fair value gains and losses on derivative financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | ​ | ​ | Nine Months Ended September 30,
(dollars in thousands) |  | 2021 |  | 2020 | ​ | ​ |  | 2021 |  | 2020
Interest Rate Lock Commitments | ​ | $ | (1,056) | ​ | 3,161 | ​ | ​ | $ | (5,480) | ​ | 7,226
Forward Commitments | ​ | ​ | 703 | ​ | (129) | ​ | ​ | ​ | 1,997 | ​ | (801)
Customer Derivatives - Interest Rate Swaps | ​ | ​ | 14 | ​ | (4) | ​ | ​ | ​ | 52 | ​ | (79)
Net fair value (losses) gains on derivative financial instruments | ​ | $ | (339) | ​ | 3,028 | ​ | ​ | $ | (3,431) | ​ | 6,346

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 + Details
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