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Share-Based Payment Arrangements - Additional Information (Detail) | 12 Months Ended
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Dec. 26, 2020 USD ($) Equityplan shares | Dec. 28, 2019 USD ($) shares | Dec. 29, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of employee equity incentive plans | Equityplan | 2 |  |
Accounting Standards Update 2016-09 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Excess tax benefit from stock-based awards | $ | $ 941,000 | $ 3,019,000 | $ 2,060,000
February 2020 Grant |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target available for common share issuance | 100.00% |  |
February 2019 Grant |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target available for common share issuance |  | 100.00% |
February 2018 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) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum percentage of target available for common share issuance | 150.00% |  |
Discount rate on stock awards | 7.00% |  |
Stock awards granted, shares | shares | 59,967 | 68,820 | 65,824
Recognized share-based compensation expense | $ | $ 1,602,000 | $ 1,557,000 | $ 15,985,000
Unrecognized compensation cost, other than options | $ | $ 33,500,000 |  |
Unrecognized compensation cost expected to be recognized over period, years | 2 years 9 months 18 days |  |
Non Vested Restricted Stock and Deferred Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock awards granted, shares | shares | 26,604 | 30,338 | 22,803
Unrecognized compensation cost, other than options | $ | $ 3,312,000 |  |
Unrecognized compensation cost expected to be recognized over period, years | 1 year 9 months 18 days |  |
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 either on the first, second and third anniversary of the date of grant or the third, fourth andfifth anniversary of the date of the grant, or 100% on the first or fifth anniversary of the date of the grant. For restricted stock awards granted under the 2013 DSCP plan, each recipient may elect to defer receipt of shares and instead receive restricted stock units (“Deferred Stock Units”), which represent contingent rights to receive shares of the Company’s Common Stock on the date of recipient separation |  |
Directors Stock Compensation Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
FMV of restricted shares granted to Directors upon election | $ | $ 110,000 | $ 110,000 | $ 110,000
Restricted shares granted | shares | 4,890 | 5,240 | 4,950
Compensation cost on restricted and Deferred Stock Units granted | $ | $ 660,000 | $ 660,000 | $ 660,000
Employee Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options outstanding, intrinsic value | $ | 1,433,000 |  |
Total intrinsic value of stock options exercised during periods | $ | 1,846,000 | $ 2,683,000 | $ 6,715,000
Unrecognized compensation cost, stock options | $ | $ 0 |  |
Deferred Stock Units D S Us [Member] | Director [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock awards granted, shares | shares | 978 | 1,048 | 990
Maximum | Restricted Stock Units (RSUs) | February 2020 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) | February 2019 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) | February 2018 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 |  |
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 | 60,586 |  |
2013 Directors Stock Compensation Plan | Deferred Stock Unit |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock vesting percentage | 100.00% |  |
Other Stock Compensation Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock reserved for issuance | shares | 3,672,286 |  |
Market Condition | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock awards granted, shares | shares |  | 9,725 | 9,324

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