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Schedule of share-based compensation arrangement by share-based payment award, Number of shares to vest if maximum stock price performance is achieved.

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Schedule of share-based compensation arrangement by share-based payment award, Number of shares to vest if target stock price performance is achieved

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Share-based compensation arrangement by share-based payment award, option term.

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Share-based compensation arrangement by share-based payment award, remaining number of authorized shares.

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Share-based compensation arrangement by share-based payment award, share conversion ratio.

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Share based compensation arrangements by share based payment award options share closing price.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The highest percentage of annual salary that an employee is permitted to utilize with respect to the 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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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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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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The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Stockholders' Equity and Stock-Based Compensation - Textual (Details)		1 Months Ended	12 Months Ended
	May. 24, 2013 shares	Mar. 31, 2015 shares	Dec. 26, 2015 USD ($) $ / shares shares	Dec. 27, 2014 USD ($) $ / shares shares	Dec. 28, 2013 USD ($) $ / shares shares	May. 29, 2012 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized			47,000,000	47,000,000
Common stock, par value per share (in dollars per share) \| $ / shares			$ 0.001	$ 0.001
Shares of preferred stock authorized			3,000,000	3,000,000
Preferred stock, par value per share (in dollars per share) \| $ / shares			$ 0.001	$ 0.001
Amount available for repurchase at end of period \| $			$ 4,397,000	$ 6,118,000	$ 11,462,000
Excess tax benefit \| $			$ 0	$ 0	$ 100,000
Option term	7 years
Weighted average fair value per share of stock options (in dollars per share) \| $ / shares				$ 8.13	$ 8.58
Number of Shares Outstanding (Options), Granted (in shares)			0	74,300	430,800
Closing stock price (in dollars per share) \| $ / shares			$ 15.79
Intrinsic value of options exercised \| $			$ 1,600,000	$ 3,000,000	$ 2,900,000
Fair value of options vested \| $			1,500,000	$ 3,200,000	$ 3,700,000
Unrecognized compensation costs \| $			$ 600,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of salary withholdings			10.00%
Purchase price of common stock, percent			85.00%
Shares remaining for issuance under the ESPP			300,000
Shares purchased under the ESPP			125,504	122,112	126,068
Weighted average price of shares issued (in dollars per share) \| $ / shares			$ 13.98	$ 13.76	$ 12.36
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining amortization period for unrecognized compensation costs			1 year 11 months 12 days
Unrecognized compensation costs \| $			$ 6,900,000
Shares per unit granted			1.7
RSUs granted (in shares)			506,459
RSUs cancelled (in shares)			119,033
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting			1 year
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting			3 years
Restricted Stock Units (RSUs) [Member] \| Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted (in shares)			506,459	473,600
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining amortization period for unrecognized compensation costs			1 year 6 months 29 days
Performance-Based Restricted Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that will vest if target stock price performance is achieved		40,000
Number of shares that will vest if maximum stock price performance is achieved		60,000
RSUs granted (in shares)			68,000	0
Performance-Based Restricted Stock Units (PSUs) [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting		1 year
Performance-Based Restricted Stock Units (PSUs) [Member] \| Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting		2 years
Performance-Based Restricted Stock Units (PSUs) [Member] \| Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting		3 years
2012 Share Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for repurchase at end of period \| $			$ 4,397,000
May 29, 2012 Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum amount of common stock approved to repurchase, Value \| $						$ 20,000,000
2005 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ratio of restricted stock units against available for grant pool	1.7
Number of shares of common stock authorized	2,600,000		7,292,594
RSUs granted (in shares)			860,980
RSUs cancelled (in shares)			202,356