NET INCOME PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
NET INCOME PER SHARE
Net income attributable to Newport Corporation	$ 2,662	$ 9,154	$ 5,408	$ 15,746
Shares:
Weighted average shares outstanding - basic	39,085	38,220	38,843	37,975
Dilutive potential common shares, using treasury stock method	276	678	468	940
Weighted average shares outstanding - diluted	39,361	38,898	39,311	38,915
Net income per share attributable to Newport Corporation:
Basic (in dollars per share)	$ 0.07	$ 0.24	$ 0.14	$ 0.41
Diluted (in dollars per share)	$ 0.07	$ 0.24	$ 0.14	$ 0.40

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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