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Segment Information - Net Sales by Product Family- Excluding Intercompany Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 608,480	$ 529,946
Pointing Devices
Segment Reporting Information [Line Items]
Net sales	127,790	122,074
Keyboards & Combos
Segment Reporting Information [Line Items]
Net sales	128,222	116,113
PC Webcams
Segment Reporting Information [Line Items]
Net sales	29,674	25,625
Tablet & Other Accessories
Segment Reporting Information [Line Items]
Net sales	32,436	23,218
Video Collaboration
Segment Reporting Information [Line Items]
Net sales	58,792	35,617
Mobile Speakers
Segment Reporting Information [Line Items]
Net sales	34,327	62,918
Audio & Wearables
Segment Reporting Information [Line Items]
Net sales	52,154	50,202
Gaming
Segment Reporting Information [Line Items]
Net sales	136,026	77,708
Smart Home
Segment Reporting Information [Line Items]
Net sales	9,011	16,466
Other
Segment Reporting Information [Line Items]
Net sales	$ 48	$ 5

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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- Definition

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+ References

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