XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.21.1

Other Long-Term Liabilities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Other Liabilities, Noncurrent [Abstract] |
Schedule of other long-term liabilities | Other long-term liabilities consist of the following as of December 31, 2020 and March 31, 2021 (in thousands):
| December 31, 2020 |  | March 31, 2021
Contract liabilities, net of current portion | $ | 34,866 |  |  | $ | 33,217 |
Asset retirement obligations | 7,647 |  |  | 8,623 |
Deferred payments related to acquisitions | 715 |  |  | — |
Other | 2,827 |  |  | 2,877 |
Other long-term liabilities | $ | 46,055 |  |  | $ | 44,717 |

X
- References No definition available. + Details
Name: | us-gaap_OtherLiabilitiesNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
Name: | us-gaap_OtherNoncurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration