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Share based Compensation Effect On Earnings Per Share, Basic And Diluted

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Share Based Compensation Plans Share Limit For Every One Share

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Shares withheld for exercise of share option awards value.

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The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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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).

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The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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No definition available.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of share-based compensation awards.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Share-Based Compensation Plans - Additional Information (Detail) - USD ($)		12 Months Ended
	Jun. 14, 2011	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares outstanding		144,293	224,379
Compensation expense		$ 2,300,000	$ 2,300,000	$ 2,200,000
Recognized tax benefit relating to compensation expense		900,000	900,000	800,000
Net income reduced		$ 1,400,000	$ 1,400,000	$ 1,400,000
Reduction in basic and diluted income per share		$ 0.06	$ 0.06	$ 0.06
Employee share option award exercised		$ 67,000	$ 967,000	$ 147,000
Value of shares withheld for exercise of share option awards			112,000
Shares withheld for tax requirements		54,012
Tax withholding payments for share-based compensation		$ 805,000	613,000	685,000
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Closing stock price per share		$ 7.60
Tax withholding payments for share-based compensation		$ 1,000	1,000	1,000
Cost of sales [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense		100,000	100,000	100,000
Selling and administrative expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense		$ 2,200,000	$ 2,200,000	2,100,000
Nonvested Share Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		191,000
Nonvested shares outstanding		377,035	355,130
Weighted-average period of recognition		2 years 3 months 18 days
Fair value of nonvested share awards		$ 2,000,000	$ 1,600,000	$ 1,700,000
Weighted-average grant-date fair value per share, granted		$ 14.88	$ 11.35	$ 13.06
Unrecognized compensation expenses		$ 3,500,000
Dividends accrued but not paid		$ 200,000
Nonvested Share Unit Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		21,000
Nonvested shares outstanding		23,250	27,750
Weighted-average period of recognition		4 months 24 days
Fair value of nonvested share awards		$ 300,000	$ 500,000	$ 100,000
Weighted-average grant-date fair value per share, granted		$ 13.90	$ 8.87	$ 14.67
Unrecognized compensation expenses		$ 100,000
Share Option Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		0	0
Weighted-average grant-date fair value per share				$ 6.02
Intrinsic value of share option awards exercised		$ 100,000	$ 1,300,000	$ 200,000
Employee share option award exercised		100,000	1,000,000	100,000
Value of shares withheld for exercise of share option awards			100,000
Tax benefit realized for the expected tax deduction from share option award exercises		31,000	$ 500,000	$ 100,000
Unrecognized compensation expense		$ 100,000
Weighted-average period of recognition		1 year 2 months 12 days
2007 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum expiration period of share based payment awards granted		10 years
Aggregate amount of shares authorized for issuance		2,399,250
Shares limited for every one share granted		250.00%
2016 Amendment and Restatement of 2007 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate amount of shares authorized for issuance		3,649,250
Maximum number of shares increased	3,250,000
Expiration date of plan		Apr. 19, 2026
Amendments and Restatements of 2007 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grant		2,090,250
Amendments and Restatements of 2007 Plan [Member] \| Nonvested Share Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		191,000
Nonvested shares outstanding		377,035
Amendments and Restatements of 2007 Plan [Member] \| Nonvested Share Unit Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		21,000
Nonvested shares outstanding		23,250
Amendments and Restatements of 2007 Plan [Member] \| Share Option Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, shares		0
Shares outstanding		144,293
Share-based Compensation Award, Tranche One [Member] \| Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)		25.00%
Share-based Compensation Award, Tranche One [Member] \| Performance Shares [Member] \| Non-Employee Directors [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)		100.00%
Share-based Compensation Award, Tranche One [Member] \| 2007 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)		25.00%