Goodwill and Intangible Assets - Summary of Carrying Amount of Goodwill (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2021 USD ($)
Finite Lived Intangible Assets [Line Items]
Balance at December 31, 2020	$ 3,332
Foreign currency translation	(69)
Balance at June 30, 2021	6,522
Smarteq Wireless Aktiebolag [Member]
Finite Lived Intangible Assets [Line Items]
Acquisition of Smarteq	$ 3,259

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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