Goodwill and Intangible Assets - Changes in Carrying Amounts of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning balance	$ 0	$ 27,816
Finalization of FSE Purchase Accounting		(537)
Goodwill impairment	(27,100)	(27,074)
Currency translation adjustment		(205)
Ending balance		0
Electrical Systems
Goodwill [Roll Forward]
Beginning balance	0	22,802
Finalization of FSE Purchase Accounting		(537)
Goodwill impairment		(22,265)
Currency translation adjustment		0
Ending balance		0
Global Seating
Goodwill [Roll Forward]
Beginning balance	$ 0	5,014
Finalization of FSE Purchase Accounting		0
Goodwill impairment		(4,809)
Currency translation adjustment		(205)
Ending balance		$ 0

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 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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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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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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