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Stock-Based Compensation (Tables)

6 Months Ended

Jul. 05, 2015

Schedule of Estimated Fair Value TSR Performance-Based Restricted Stock Unit Awards Assumptions

The fair value was estimated using the Monte Carlo simulation model with the following assumptions:

		For the Six Months Ended
		July 5, 2015				June 29, 2014
Risk-free interest rate			0.77	%			0.75	%
Teradyne volatility-historical			28.2	%			36.1	%
Philadelphia Semiconductor Index volatility-historical			19.7	%			24.6	%
Dividend yield			1.33	%			1.25	%

Stock Options

Fair Value of Stock Options Using Assumptions

The fair value of stock options was estimated using the Black-Scholes option-pricing model with the following assumptions:

		For the Six Months Ended
		July 5, 2015				June 29, 2014
Expected life (years)			4.0				4.0
Risk-free interest rate			1.1	%			1.2	%
Volatility-historical			33.4	%			38.8	%
Dividend yield			1.33	%			1.25	%

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- Definition

Schedule Of Share Based Payment Award Shareholder Return Plan Valuation Assumptions [Table Text Block]

+ References

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (f)(2)



-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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