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Share Based Payment Arrangements - Additional Information (Detail) $ / shares in Units, $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
May 01, 2015 shares | Dec. 31, 2016 USD ($) EquityPlan shares | Dec. 26, 2015 USD ($) shares | Dec. 27, 2014 USD ($) $ / shares shares | Dec. 28, 2013 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of employee equity incentive plans | EquityPlan |  | 2 |  |  |
Income tax benefit realized on disqualifying dispositions of stock acquired by exercise of incentive stock options |  | $ 451 | $ 383 |  |
2013 Directors Stock Compensation Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock authorized for issuance | shares |  | 115,000 |  |  |
Common stock reserved for issuance | shares |  | 86,572 |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Discount rate on stock awards |  | 7.00% |  |  |
Stock awards granted | shares |  | 79,948 | 111,922 | 146,000 |
Recognized share-based compensation expense |  | $ 849 | $ 4,943 | $ 4,443 |
Unrecognized compensation cost expected to be recognized over period, years |  | 2 years 7 months 6 days |  |  |
Stock awards outstanding | shares |  | 378,238 | 444,157 | 425,630 | 308,007
Restricted Stock Units (RSUs) | May 2015 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of target available for common share issuance | 100.00% |  |  |  |
Stock awards granted | shares | 20,000 |  |  |  |
Restricted Stock Units (RSUs) | January 2016 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
RSU awards vesting period |  | 5 years |  |  |
Percentage of target available for common share issuance |  | 100.00% |  |  |
Restricted Stock Units (RSUs) | Prior to 2016 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
RSU awards vesting period |  | 5 years |  |  |
Restricted Stock Units (RSUs) | January 2015 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of target available for common share issuance |  | 100.00% |  |  |
Restricted Stock Units (RSUs) | 2012 Grants, Nonvested to Forfeit |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost, other than options |  | $ 2,400 |  |  |
Stock awards outstanding | shares |  | 54,102 |  |  |
Employee Stock Option |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Terms of award |  | Options granted under the Plans generally become exercisable in either five equal annual installments commencing on the first anniversary of the date of grant or 100% on the fifth anniversary from the date of grant, subject to acceleration in certain circumstances. All options granted under the Plans expire on the tenth anniversary of the date of grant. Under the Plans, the exercise price of each option equals the fair market value of the Company's Common Stock on the date of grant. |  |  |
The weighted average grant date fair value of stock options granted | $ / shares |  |  |  | $ 12.70 |
Stock options outstanding, intrinsic value |  | $ 13,809 |  |  |
Intrinsic value of stock options exercisable |  | 10,991 |  |  |
Total intrinsic value of stock options exercised during periods |  | 7,427 | $ 2,954 | $ 14,573 |
Unrecognized compensation cost |  | $ 365 |  |  |
Non-vested Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock awards granted | shares |  | 26,033 | 1,197 | 7,124 |
Unrecognized compensation cost, other than options |  | $ 953 |  |  |
Unrecognized compensation cost expected to be recognized over period, years |  | 1 year 7 months 6 days |  |  |
Stock awards outstanding | shares |  | 28,409 | 18,060 | 23,353 | 38,193
Terms of award |  | The Company's Common Stock on the date of grant. Shares of non-vested restricted stock are generally subject to vesting in three equal annual installments or 100% on the first, third or fifth anniversary of the date of the grant. |  |  |
Directors Stock Compensation Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
FMV of restricted shares granted to Directors upon election |  | $ 110 | $ 225 |  |
Restricted shares granted | shares |  | 7,762 | 1,197 | 7,124 |
Compensation cost on restricted shares granted |  | $ 591 | $ 419 | $ 331 |
Directors Stock Compensation Plan | Class III Director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
FMV of restricted shares granted to Directors upon election |  | 35 |  |  |
Maximum | Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost, other than options |  | $ 27,000 |  |  |
Maximum | Restricted Stock Units (RSUs) | May 2015 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Maximum percentage of target available for common share issuance | 150.00% |  |  |  |
Maximum | Restricted Stock Units (RSUs) | January 2016 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Maximum percentage of target available for common share issuance |  | 200.00% |  |  |
Maximum | Restricted Stock Units (RSUs) | January 2015 Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Maximum percentage of target available for common share issuance |  | 200.00% |  |  |
Maximum | Restricted Stock Units (RSUs) | Prior to 2015 grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Maximum percentage of target available for common share issuance |  | 100.00% |  |  |
2011 Equity Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock authorized for issuance | shares |  | 6,000,000 |  |  |
Other Stock Compensation Plans |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock reserved for issuance | shares |  | 5,000,732 |  |  |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual 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 (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Restrictions on equity-based instruments during the vesting period, such as the inability to transfer unvested awards, are not taken into account in estimating the fair value of the award. However, restrictions that remain in effect after an award is vested, such as the inability to transfer or hedge vested options or a prohibition on the sale of outstanding vested shares (or other type of equity) for a period of time, affect the estimate of an award's fair value. + 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 (f)(2)(v) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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