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Capital Stock - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
May 31, 2017 | Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015 | Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of outstanding shares owned by controlling family |  | 20.00% |  |  |
Shares authorized of undesignated capital stock for future issuance |  | 50,000,000 |  |  |
Authorized number of common stock shares for grant |  | 2,000,000 |  |  |
Date of plan approval |  | May 20, 2009 |  |  |
Maximum grant period from date of plan approval |  | 10 years |  |  |
Shares available for grant under the plan |  | 1,399,106 |  |  |
Compensation cost related to restricted stock |  | $ 2,800,000 | $ 2,300,000 | $ 900,000 |
Compensation cost related to stock options |  | $ 300,000 | $ 100,000 | 100,000 |
Weighted-average grant-date fair value |  | $ 78.58 | $ 44.36 |  |
Cash received from stock option exercises under the plan |  | $ 31,000 |  | $ 93,000 |
Stock options exercised |  | 32,751 |  | 35,000 |
Total 401(K) expense |  | $ 2,700,000 | $ 2,500,000 | $ 2,700,000 |
Common stock, shares held by 401(K) plan |  | 269,628 |  |  |
Repurchase and cancellation of shares |  | 19,110 | 38,970 | 33,430 |
Common stock repurchased, average price |  | $ 73.34 | $ 56.66 | $ 48.14 |
Common stock repurchased, value |  | $ 1,400,000 | $ 2,200,000 | $ 1,600,000 |
Share Repurchase Program [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock repurchased, average price |  | $ 74.26 | $ 52.15 | $ 47.77 |
Common stock repurchased, value |  | $ 74,700,000 | $ 22,500,000 | $ 35,700,000 |
Share repurchase program shares authorized to be repurchased |  |  |  | $ 250,000,000 | $ 10,000,000
Shares repurchased under share repurchase program |  | 1,006,365 | 430,866 | 747,700 |
Authorized date of repurchase of outstanding common stock |  | Dec. 12, 2013 |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Authorized number of common stock shares for grant | 1,000,000 |  |  |  |
Rate of discount on shares of common stock available for sale to eligible employees | 15.00% |  |  |  |
Number of shares purchased |  | 0 |  |  |
Compensation cost |  | $ 100,000 |  |  |
Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Cash received from stock option exercises under the plan |  | 100,000 |  |  |
Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Capitalized compensation cost |  | 0 | $ 0 | $ 0 |
Unrecognized compensation cost related to non-vested stock options |  | $ 4,600,000 |  |  |
Unrecognized compensation cost related to nonvested stock options, weighted-average period |  | 2 years 7 months 6 days |  |  |
Tax benefit generated from compensation cost and credited |  | $ 400,000 | 300,000 | 300,000 |
Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Capitalized compensation cost |  | 0 | 0 | 0 |
Unrecognized compensation cost related to non-vested stock options |  | $ 1,000,000 |  |  |
Unrecognized compensation cost related to nonvested stock options, weighted-average period |  | 2 years 10 months 24 days |  |  |
Tax benefit generated from compensation cost and credited |  | $ 600,000 | $ 0 | $ 100,000 |
Stock options granted |  |  |  | 0 |
Weighted-average grant-date fair value |  | $ 15.81 | $ 8.40 |  |
Stock options exercised |  |  | 0 |  |
Performance-Based Long Term Award Program [Member] | Executives [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Term of compensation on compound annual growth in our pre-tax income |  | 3 years |  |  |

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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=96867065&loc=d3e5070-113901 + 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=96867065&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the 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)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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