Summary of Stock Option Activity (Detail) (Equity Option, USD $)	3 Months Ended
Mar. 29, 2015
Equity Option
Stock option activity
Number of Shares Outstanding - beginning of year	840,658
Weighted average exercise price outstanding - beginning of year	$ 1.45
Number of shares, Exercised	(27,294)
Weighted average exercise price, Exercised	$ 1.45
Number of shares, Granted	0
Weighted average exercise price, Granted	$ 0.00
Number of shares, Forfeited	0
Weighted average exercise price, Forfeited	$ 0.00
Number of Shares Outstanding - end of year	813,364
Weighted average exercise price Outstanding - ending of year	$ 1.45
Exercisable - end of year	813,364
Weighted Average Exercise Price Exercisable - end of period	$ 1.45

The weighted average price of shares forfeited during the year reserved for issuance under the stock option plan.

No definition available.

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- Definition

The weighted average price of shares granted during the year reserved for issuance under the stock option plan.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ 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 (c)(1)(iv)(3)

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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