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Other Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of other assets | Other assets consist of the following as of December 31, 2019 and 2020 (in thousands):
| December 31, 2019 |  | December 31, 2020
Prepaid expenses, net of current portion | $ | 191 |  |  | $ | 22,418 |
Equity method investments | 15,795 |  |  | 15,795 |
Cloud computing arrangements | — |  |  | 6,385 |
Other investments | 2,123 |  |  | 2,527 |
Other | 3,679 |  |  | 7,803 |
Balance at end of period | $ | 21,788 |  |  | $ | 54,928 |
Changes in company's limited partnership investments | The following table illustrates changes in the Company’s limited partnership investments for the years ended December 31, 2019 and 2020 (in thousands):
| 2019 |  | 2020
Limited partnership investments, beginning of period | $ | 13,449 |  |  | $ | 15,795 |
Capital contributions | 1,035 |  |  | 550 |
Pro-rata share in the net income of limited partnerships | 2,337 |  |  | 1,862 |
Distributions | (1,026) |  |  | (2,412) |
Limited partnership investments, end of period | $ | 15,795 |  |  | $ | 15,795 |

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