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Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Other Liabilities, Noncurrent [Abstract]
Contract liabilities, net of current portion	$ 33,201	$ 34,866
Asset retirement obligations	7,944	7,647
Deferred payments related to acquisitions	0	715
Other	2,625	2,827
Other long-term liabilities	$ 43,770	$ 46,055

X

- Definition

Represents non-current deferred payments related to acquisitions.

+ References

No definition available.

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- Definition

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

+ References

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- Definition

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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- Definition

Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are expected to be paid after one year (or the normal operating cycle, if longer), from the balance sheet date.

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