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Commitments and Contingent Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingent Liabilities |
Schedule of allowance for indemnifications losses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, | ​
(Dollars in thousands) |  | 2020 |  | 2019 |
Allowance, beginning of period | ​ | $ | 2,475 | ​ | $ | 2,541 | ​
Provision for indemnification losses | ​ |  | 881 | ​ |  | — | ​
Payments | ​ |  | — | ​ |  | (66) | ​
Allowance, end of period | ​ | $ | 3,356 | ​ | $ | 2,475 | ​

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