Property and Equipment, Net - Additional Information (Detail)				3 Months Ended			12 Months Ended
	Jul. 31, 2018 USD ($)	Aug. 26, 2016 USD ($) ft² a	Sep. 01, 2013 USD ($) ft²	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($) ft² a	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) ft² a	Dec. 31, 2016 USD ($)	Apr. 30, 2018 USD ($)	Apr. 13, 2017 USD ($) ft² a
Property, Plant and Equipment [Line Items]
Depreciation expense							$ 18,600,000	$ 16,800,000	$ 14,100,000
Assets held for sale				$ 2,800,000		$ 4,200,000	2,800,000	4,200,000
Proceeds from sale of held-for-sale building and land							1,130,000	0	0
Minimum lease payments				45,315,000			45,315,000
Restricted cash equivalents				39,809,000		32,531,000	39,809,000	32,531,000		$ 39,800,000
Cost of manufacturing and warehouse facility under construction				77,613,000		98,762,000	77,613,000	$ 98,762,000
New Hampshire
Property, Plant and Equipment [Line Items]
Impairment loss							500,000
Bank of Tokyo - Mitsubishi UFJ Leasing & Finance LLC | Building Lease | New Hampshire
Property, Plant and Equipment [Line Items]
Lease term		6 years
Area of real estate property | ft²		225,000
Minimum lease payments		$ 1,800,000
Residual value guarantee percentage		89.00%
Bank of Tokyo - Mitsubishi UFJ Leasing & Finance LLC | Building Lease | Industrial Inkjet | New Hampshire
Property, Plant and Equipment [Line Items]
Cost of manufacturing and warehouse facility under construction		$ 39,800,000
Fremont Facility | California
Property, Plant and Equipment [Line Items]
Lease term	10 years		15 years
Area of leased property | ft²			59,000
Lease base rent plus other charges and expenses			$ 18,500,000
Minimum lease payments	$ 16,000,000
Payment of penalties on lease termination	800,000
Loss on termination of lease							100,000
Cost of manufacturing and warehouse facility under construction	13,700,000
Operating lease liability	$ 14,500,000
Eagan Facility | Minnesota
Property, Plant and Equipment [Line Items]
Acres of land | a											5.6
Area of real estate property | ft²											43,682
Assets held for sale											$ 3,800,000
Assets Held-for-sale, Not Part of Disposal Group									2,900,000
Land									$ 900,000
City of Manchester | Land Lease | New Hampshire
Property, Plant and Equipment [Line Items]
Lease term		48 years 6 months
Lease term period included in facility lease		6 months
Acres of land | a		16.9
Minimum lease payments		$ 13,300,000
Renewal term of lease		5 years
Lease arrangement, operating lease second renewal term		3 years 6 months
Meredith | New Hampshire
Property, Plant and Equipment [Line Items]
Impairment loss						$ 900,000
Meredith | Sales Leaseback | New Hampshire
Property, Plant and Equipment [Line Items]
Gain on disposition					$ 100,000
Acres of land | a						31.5		31.5
Area of real estate property | ft²						163,000		163,000
Assets held for sale						$ 5,100,000		$ 5,100,000
Assets Held-for-sale, Not Part of Disposal Group				2,800,000			$ 2,800,000
Net book value of facility						$ 4,200,000		$ 4,200,000
Proceeds from sale of held-for-sale building and land					$ 1,100,000
Impairment loss				$ 300,000