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v3.21.1

Fair Value Measurements - Financial Instruments Required to be Carried at Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Liabilities |  |
Contingent consideration | $ (2,927) | $ (2,957)
Level 1 |  |
Liabilities |  |
Contingent consideration | 0 | 0
Level 2 |  |
Liabilities |  |
Contingent consideration | 0 | 0
Level 3 |  |
Liabilities |  |
Contingent consideration | (2,927) | (2,957)
Interest rate cap contracts |  |
Assets |  |
Interest rate derivatives | 854 | 659
Interest rate cap contracts | Level 1 |  |
Assets |  |
Interest rate derivatives | 0 | 0
Interest rate cap contracts | Level 2 |  |
Assets |  |
Interest rate derivatives | 854 | 659
Interest rate cap contracts | Level 3 |  |
Assets |  |
Interest rate derivatives | 0 | 0
Interest rate swap agreements |  |
Liabilities |  |
Swap agreements | (3,847) | (5,232)
Interest rate swap agreements | Level 1 |  |
Liabilities |  |
Swap agreements | 0 | 0
Interest rate swap agreements | Level 2 |  |
Liabilities |  |
Swap agreements | (3,847) | (5,232)
Interest rate swap agreements | Level 3 |  |
Liabilities |  |
Swap agreements | 0 | 0
Cross-currency swap agreements |  |
Assets |  |
Interest rate derivatives |  | 11,578
Liabilities |  |
Swap agreements | (5,340) |
Cross-currency swap agreements | Level 1 |  |
Assets |  |
Interest rate derivatives |  | 0
Liabilities |  |
Swap agreements | 0 |
Cross-currency swap agreements | Level 2 |  |
Assets |  |
Interest rate derivatives |  | 11,578
Liabilities |  |
Swap agreements | (5,340) |
Cross-currency swap agreements | Level 3 |  |
Assets |  |
Interest rate derivatives |  | $ 0
Liabilities |  |
Swap agreements | $ 0 |

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