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Business Acquisitions - 2017 Acquisitions - Additional Information (Detail) - USD ($)		1 Months Ended			12 Months Ended
	Aug. 14, 2017	Jul. 31, 2018	Jul. 31, 2017	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired					$ 0	$ 29,559,000	$ 19,932,000
Business Combination, Contingent Consideration, Liability					10,501,000	35,702,000
Contingent consideration, current					8,268,000	14,922,000
Contingent consideration, noncurrent					$ 2,200,000
FFPS
Acquired Finite-Lived Intangible Assets [Line Items]
Incremental borrowing rate					4.98%
FFPS \| Fiery
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired				$ 23,900,000
Total purchase price					$ 23,100,000	23,043,000
FFPS \| Fiery \| Paid at Closing
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired				$ 5,900,000
FFPS \| Fiery \| Paid in July 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired			$ 9,000,000
FFPS \| Fiery \| Payable in July 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired		$ 9,000,000
Generation Digital \| Fiery
Acquired Finite-Lived Intangible Assets [Line Items]
Total purchase price						6,924,000
Cash consideration	$ 3,200,000
Length of earnout period					6 months
Length of Earnout Period, Two					12 months
Fair value of earnout					$ 0
CRC and Escada \| Productivity Software
Acquired Finite-Lived Intangible Assets [Line Items]
Businesses purchased, net of cash acquired						19,500,000
Total purchase price						$ 20,045,000
Length of earnout period					12 months
Escada \| Productivity Software
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Contingent Consideration, Liability					$ 4,200,000
Contingent consideration, current					2,400,000
Contingent consideration, noncurrent					$ 1,900,000
Escada \| Productivity Software \| Earnout
Acquired Finite-Lived Intangible Assets [Line Items]
Input rate					0.0297
Measurement Input, Asset Volatility \| FFPS
Acquired Finite-Lived Intangible Assets [Line Items]
Input rate					0.27