Goodwill and Intangible Assets Disclosure [Line Items]

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

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.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

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Goodwill And Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 03, 2017	Jul. 01, 2015
Goodwill and Intangible Assets Disclosure [Line Items]
Accumulated Impairment					$ 255
Amortization of intangible assets			$ 0	$ 0	$ 766
Goodwill impairment	$ 17,489	$ 15,715
Shannon Systems
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill							$ 33,204
Bigtera
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill						$ 625