Goodwill and Other Intangible Assets.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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- Definition

Amount before accumulated amortization of finite-lived intangible assets classified as other.

+ References

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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Other Intangible Assets [Line Items]
Intangible assets	$ 49,783	$ 56,385
Other intangible assets including capitalized patent costs	10,068	14,043	$ 12,425
Impairment on assets held for sale		2,190
Goodwill impairment charges		6,151
Other intangible impairment charges		3,135
Customer Relationship
Goodwill And Other Intangible Assets [Line Items]
Intangible assets	38,521	43,047
Technology
Goodwill And Other Intangible Assets [Line Items]
Intangible assets	5,240	$ 6,494
Stihler Electronic GmbH \| Customer Relationship
Goodwill And Other Intangible Assets [Line Items]
Intangible assets	$ 3,420
Acquired intangible assets useful life	9 years 2 months 12 days
Stihler Electronic GmbH \| Technology
Goodwill And Other Intangible Assets [Line Items]
Intangible assets	$ 538
Acquired intangible assets useful life	7 years