v3.21.1

Contract assets and contract liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Contract Assets, Net |  |
Balance at December 31 | $ 547 |
Balance at March 31 | 473 |
Change | (74) |
Contract Liabilities, Net |  |
Balance at December 31 | 224,754 |
Balance at March 31 | 236,465 |
Change | 11,711 |
Contract assets | 766 |
Contract Liabilities | 1,990 |
Contract liability and performance obligations included in revenue |  |
Amounts included in the beginning of period contract liability balance | $ 28,348 | $ 24,970
Amounts associated with performance obligations satisfied in previous periods |  | $ 13
Revenue performance obligations |  |
Practical expedient of remaining performance obligations | true |
DAS |  |
Revenue performance obligations |  |
Remaining service performance obligations | $ 224,687 |
DAS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Minimum |  |
Revenue performance obligations |  |
Remaining duration of contracts | 1 year |
DAS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Maximum |  |
Revenue performance obligations |  |
Remaining duration of contracts | 13 years |
Wholesale-Wi-Fi |  |
Revenue performance obligations |  |
Remaining service performance obligations | $ 5,139 |
Wholesale-Wi-Fi | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Minimum |  |
Revenue performance obligations |  |
Remaining duration of contracts | 1 year |
Wholesale-Wi-Fi | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Maximum |  |
Revenue performance obligations |  |
Remaining duration of contracts | 13 years |

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