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Business Combinations - Additional Information (Detail) $ in Thousands, € in Millions				6 Months Ended
	Apr. 01, 2019 USD ($)	Feb. 28, 2019 USD ($)	Feb. 28, 2019 EUR (€)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Payments of business, net of cash acquired				$ 0	$ 18,974
Goodwill				27,048		$ 27,840
Intangibles - net				13,786		$ 15,116
SubCon [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired		100.00%
Total purchase price		$ 10,100
Payments of business, net of cash acquired		1,900
Goodwill		6,600
Intangibles - net		4,700
Purchase price estimated contingent liability		$ 600
Potential maximum payment | €			€ 4.0
Remeasurement period		4 years	4 years
SubCon [Member] | Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Business combination earnout liability				$ 200
SubCon [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful lives		10 years	10 years
SubCon [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful lives		11 years	11 years
MICOS Telecom [Member]
Business Acquisition [Line Items]
Total purchase price	$ 8,800
Payments of business, net of cash acquired	500
Goodwill	5,600
Intangibles - net	$ 3,400
Useful lives	12 years
Percentage of remaining voting interests deferred consideration payable	10.00%
MICOS Telecom [Member] | Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Business combination hold-back liability	$ 1,500
Business combination hold-back liability payable term	2 years
Business combination deferred consideration	$ 900

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