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Financial Instruments with Off-Balance Sheet Risk (Tables) | 12 Months Ended
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Dec. 31, 2019
Financial Instruments with Off-Balance Sheet Risk |
Schedule of financial instruments of the subsidiary, whose contract amounts represent credit risk | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, |
(Dollars in thousands) | ​ | 2019 | ​ | 2018 |
Commitments to extend credit |  | $ | 2,902,000 |  | $ | 2,748,901 | ​
Standby letters of credit and financial guarantees | ​ |  | 32,869 | ​ |  | 32,725 | ​
​ | ​ | $ | 2,934,869 | ​ | $ | 2,781,626 | ​

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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