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Summary of Changes in Carrying Amount of Goodwill (Detail) (Parenthetical)	12 Months Ended
	Dec. 31, 2020 USD ($)
Goodwill [Line Items]
Adjustment to goodwill	$ 84,000	[1]
Sonar Acquisition
Goodwill [Line Items]
Total consideration	13,200,000
Adjustment to goodwill	$ 84,000
[1] (1) Included working capital adjustments finalized subsequent to the Sonar acquisition in December 2019, resulting in total consideration of approximately $13.2 million and an adjustment to goodwill in the amount of $84,000 during the year ended December 31, 2020.

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase (decrease) 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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