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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 666,462	$ 675,463
Accumulated amortization & Impairment	451,426	444,602
Net	215,036	230,861
Customer-Related Intangible Assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	407,549	415,386
Accumulated amortization & Impairment	327,266	325,910
Net	80,283	89,476
Marketing-Related Intangible Assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	83,791	84,169
Accumulated amortization & Impairment	55,426	54,031
Net	28,365	30,138
Technology-related intangible assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	156,400	149,262
Accumulated amortization & Impairment	68,734	61,150
Net	87,666	88,112
Intangible Assets Under Development [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	18,722	26,646
Accumulated amortization & Impairment		3,511
Net	$ 18,722	$ 23,135

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
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