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Schedule of Company's Contingent Consideration Liability Under Acquisitions Agreements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Combinations [Abstract]
Beginning Balance	$ 1,244	$ 3,866	$ 11,334
Additional obligations acquired	2,044	1,312
Adjustment to contingent consideration within the measurement period			(1,697)
Reassessment of contingent consideration	250	(3,866)	(6,050)
Accretion of discounted liabilities	16	28	345
Payments on existing obligations	(1,227)		(66)
Foreign exchange effect	141	(96)
Ending Balance	$ 2,468	$ 1,244	$ 3,866

X

- Definition

Adjustment to contingent consideration within the measurement period.

+ References

No definition available.

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Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References

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Amount of foreign currency translation gain (loss) which decreases (increases) asset retirement obligations.

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Amount of asset retirement obligations incurred during the period.

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Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.

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Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

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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.

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