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Net Income per Common Share | 6 Months Ended
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Jul. 03, 2016
Net Income per Common Share | M. Net Income per Common Share The following table sets forth the computation of basic and diluted net income per common share:
|  | For the Three Months Ended |  |  | For the Six Months Ended |
|  | July 3, 2016 |  |  | July 5, 2015 |  |  | July 3, 2016 |  |  | July 5, 2015 |
|  | (in thousands, except per share amounts) |
Net (loss) income for basic and diluted net income per share |  | $ | (223,546 | ) |  | $ | 102,879 |  |  | $ | (173,560 | ) |  | $ | 135,666 |
Weighted average common shares-basic |  |  | 203,018 |  |  |  | 213,845 |  |  |  | 203,645 |  |  |  | 215,516 |
Effect of dilutive potential common shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | — |  |  |  | 978 |  |  |  | — |  |  |  | 940 |
Stock options |  |  | — |  |  |  | 603 |  |  |  | — |  |  |  | 649 |
Employee stock purchase plan |  |  | — |  |  |  | 70 |  |  |  | — |  |  |  | 49 |
Dilutive potential common shares |  |  | — |  |  |  | 1,651 |  |  |  | — |  |  |  | 1,638 |
Weighted average common shares-diluted |  |  | 203,018 |  |  |  | 215,496 |  |  |  | 203,645 |  |  |  | 217,154 |
Net (loss) income per common share-basic |  | $ | (1.10 | ) |  | $ | 0.48 |  |  | $ | (0.85 | ) |  | $ | 0.63 |
Net (loss) income per common share-diluted |  | $ | (1.10 | ) |  | $ | 0.48 |  |  | $ | (0.85 | ) |  | $ | 0.62 |
The computation of diluted net income per common share for the three and six months ended July 3, 2016 excludes the effect of the potential exercise of all outstanding stock options and restricted stock units because Teradyne had a net loss and inclusion would be anti-dilutive. The computation of diluted net income per common share for the three and six months ended July 5, 2015 excludes the effect of the potential exercise of stock options to purchase approximately 0.2 million shares because the effect would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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