Commitments and Contingencies - Additional Information (Detail)								1 Months Ended			3 Months Ended	12 Months Ended
	Dec. 17, 2015 USD ($)	Oct. 21, 2015 Patent	Jun. 05, 2015 USD ($) Patent	Mar. 26, 2013 USD ($)	May. 01, 2012 Patent	Apr. 27, 2012 Patent	Oct. 20, 2004 Patent	Jan. 31, 2011 USD ($)	Dec. 31, 2008 USD ($)	Oct. 31, 2006 USD ($)	Mar. 31, 2013 USD ($)	Dec. 27, 2015 USD ($) Subsidiary Vendor LegalMatter Patent Claim	Dec. 28, 2014 USD ($)	Dec. 29, 2013 USD ($)
Loss Contingencies [Line Items]
Future minimum payments												$ 15,300,000
Damages awarded for infringement of the patents														$ 30,000,000
Charge for (release of) litigation													$ 4,400,000	(12,600,000)
Product sales value														$ 20,000
Possible losses, minimum												1,200,000
Possible losses, maximum												$ 15,900,000
POWI 1
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent							4
Damages awarded for infringement of the patents								$ 12,200,000	$ 6,100,000	$ 34,000,000
Charge for (release of) litigation											$ 12,600,000
POWI 2
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent												3
Number of claims in lawsuit | Claim												1
POWI 3
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent												3
Damages awarded for infringement of the patents												$ 105,000,000
Number of patents infringed | Patent												2
POWI 3 | Second Trial On Damages
Loss Contingencies [Line Items]
Damages awarded for infringement of the patents	$ 139,800,000
POWI 4
Loss Contingencies [Line Items]
Number of company entities included in complaint | Subsidiary												4
Number of vendors included in lawsuit | Vendor												7
POWI 5
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent					3
Number of patents infringed | Patent			2
Number of patents not infringed | Patent			1
Trial commencement date												May 26, 2015
Loss contingency, damages awarded for infringement of the patents			$ 2,400,000
Damages paid for infringement of the patents			$ 100,000
POWI 5 | Prior To The Trial
Loss Contingencies [Line Items]
Number of patents not infringed | Patent												1
Power Integrations
Loss Contingencies [Line Items]
Number of outstanding proceedings with power integrations | LegalMatter												6
Power Integrations | POWI 2
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent						4
Number of patents infringed | Patent						2
Power Integrations | POWI 5
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent					5
Power Integrations | Powi Six
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent		2
System General | POWI 2
Loss Contingencies [Line Items]
Number of patents in lawsuit | Patent						2
Number of patents infringed | Patent						1
Minimum | POWI 1
Loss Contingencies [Line Items]
Damages awarded for infringement of the patents				$ 500,000
Maximum
Loss Contingencies [Line Items]
Indemnification for remediation costs and other liabilities related to historical contamination												$ 150,000,000
Maximum | POWI 1
Loss Contingencies [Line Items]
Damages awarded for infringement of the patents				$ 750,000