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Other Investments (Tables) | 12 Months Ended
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Dec. 31, 2019
Other Investments |
Changes in Company's Limited Partnership Investment | The following table illustrates changes in the Company’s limited partnership investments for the years ended December 31, 2018 and 2019 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2018 |  | 2019
Limited partnership investments, beginning of period | ​ | $ | — | ​ | $ | 13,449
Additions from merger | ​ |  | 12,803 | ​ |  | —
Capital contributions | ​ |  | 737 | ​ |  | 1,035
Pro-rata share in the net income of limited partnerships | ​ |  | (91) | ​ |  | 2,337
Distributions | ​ |  | — | ​ |  | (1,026)
Limited partnership investments, end of period | ​ | $ | 13,449 | ​ | $ | 15,795

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