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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2020
Accounting Policies [Abstract] |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles | The cumulative-effect adjustment resulting from the adoption of ASU 2016-13 as of January 1, 2020 was as follows:
Balance net of allowance | Balance Sheet Location |  | Balance at December 31, 2019 |  | Adjustment due to ASU 2016-13 Adoption |  | Balance at January 1, 2020 |  | Balance at March 31, 2020
(amounts in thousands) |  |  |  |  |  |  |  |  |
Annual membership subscriptions | Other assets, net |  | $ | 2,394 |  |  | $ | (1,361 | ) |  | $ | 1,033 |  |  | $ | 1,232 |
Membership upgrades | Notes receivable, net |  | $ | 25,236 |  |  | $ | (2,514 | ) |  | $ | 22,722 |  |  | $ | 23,149 |

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