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- Definition

Fair value inputs revenue growth rate during period.

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- Definition

Forecast Period

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Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]

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- Definition

Goodwill Fair Value In Excess Of Carrying Value

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Goodwill Fair Value In Excess Of Carrying Value Percentage

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- Definition

Impact of change in useful life of intangible asset.

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- Definition

Intangible Asset, Measurement Input

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- Definition

Long Term Growth Rate Used In Determining Terminal Value

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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.

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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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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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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Goodwill and Long-Lived Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Intangible amortization expense			$ 45,291,000	$ 47,339,000	$ 39,560,000
Impairment of intangible assets			$ 0	0	0
Compound annual growth rate			8.00%
Estimated control premium rate	0.119		0.119
Forecast horizon			12 years
Industrial Inkjet
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Fair value of goodwill	$ 95,000,000		$ 95,000,000
Goodwill fair value in excess of carrying value percentage	22.00%		22.00%
Productivity Software
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Fair value of goodwill	$ 49,000,000		$ 49,000,000
Goodwill fair value in excess of carrying value percentage	28.00%		28.00%
Fiery
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Fair value of goodwill	$ 362,000,000		$ 362,000,000
Goodwill fair value in excess of carrying value percentage	331.00%		331.00%
Long-term growth rate of calculated terminal values			2.50%
Industrial Inkjet and Productivity Software
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Long-term growth rate of calculated terminal values			4.00%
Amortization period \| Developed Technology
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Impact of change in useful life of intangible asset				$ 200,000	$ 1,600,000
Minimum
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Estimated useful lives			1 year
Revenue growth rate			4.00%
Maximum
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Estimated useful lives			16 years
Revenue growth rate			9.00%
New Hampshire
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Long-lived asset impairment charges			$ 500,000
New Hampshire \| Meredith
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Long-lived asset impairment charges		$ 900,000
New Hampshire \| Meredith \| Sales Leaseback
Purchased Identified Intangible Assets resulting from Acquisitions [Line Items]
Long-lived asset impairment charges	$ 300,000