Reconciliation of Number of Common Shares used in Calculation of Basic and Diluted Earnings Per Share (EPS) (Detail) (USD $)	3 Months Ended	9 Months Ended
Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Shares
Basic EPS, shares	16,944,120	16,609,005	16,892,338	16,435,337
Effect of dilutive securities, shares	149,982	240,277	256,217	353,439
Diluted EPS, shares	17,094,102	16,849,282	17,148,555	16,788,776
Per-Share Amount
Basic EPS	$ 0.22	$ 0.39	$ 0.90	$ 0.85
Effect of dilutive securities	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.02)
Diluted EPS	$ 0.21	$ 0.38	$ 0.88	$ 0.83

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.

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- Definition

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

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- 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.

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- 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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-Glossary Weighted-Average Number of Common Shares Outstanding

-URI http://asc.fasb.org/extlink&oid=6528421

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