Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Apr. 01, 2014
Cash flows from operating activities:
Net income including noncontrolling interests	$ 33,581us-gaap_ProfitLoss	$ 27,608us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,335	14,085
Deferred income taxes	(755)us-gaap_DeferredIncomeTaxExpenseBenefit	(871)us-gaap_DeferredIncomeTaxExpenseBenefit
Loss on disposition of assets	978us-gaap_GainLossOnDispositionOfAssets	653us-gaap_GainLossOnDispositionOfAssets
Equity income from investments in unconsolidated affiliates	(372)	(212)
Distributions of income received from investments in unconsolidated affiliates	155	138
Provision for doubtful accounts	(47)us-gaap_ProvisionForDoubtfulAccounts	8us-gaap_ProvisionForDoubtfulAccounts
Share-based compensation expense	4,904us-gaap_ShareBasedCompensation	3,621us-gaap_ShareBasedCompensation
Changes in operating working capital:
Receivables	13,063	8,444
Inventories	1,611us-gaap_IncreaseDecreaseInInventories	639us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	(1,048)	(795)
Other assets	(960)	788
Accounts payable	520	385
Deferred revenue-gift cards	(27,546)	(22,489)
Accrued wages	4,079	2,800
Excess tax benefits from share-based compensation	(2,215)	(1,228)
Prepaid income taxes and income taxes payable	11,694	11,796
Accrued taxes and licenses	400	(1,231)
Other accrued liabilities	755	1,836
Deferred rent	948	813
Other liabilities	1,612	(999)
Net cash provided by operating activities	57,692	45,789
Cash flows from investing activities:
Capital expenditures-property and equipment	(33,437)	(23,087)
Proceeds from sale of property and equipment, including insurance proceeds	9
Net cash used in investing activities	(33,428)	(23,087)
Cash flows from financing activities:
Repurchase of shares of common stock		(24,172)
Distributions to noncontrolling interests	(1,172)	(1,144)
Excess tax benefits from share-based compensation	2,215	1,228
Proceeds from (repayments of) stock option and other deposits, net	366	(361)
Indirect repurchase of shares for minimum tax withholdings	(4,402)	(3,622)
Principal payments on long-term debt and capital lease obligations	(30)	(71)
Proceeds from exercise of stock options	1,592	1,262
Dividends paid to stockholders	(10,443)us-gaap_PaymentsOfDividendsCommonStock
Net cash used in financing activities	(11,874)	(26,880)
Net increase (decrease) in cash and cash equivalents	12,390	(4,178)
Cash and cash equivalents-beginning of period	86,122	94,874
Cash and cash equivalents-end of period	98,512	90,696
Supplemental disclosures of cash flow information:
Interest, net of amounts capitalized	580us-gaap_InterestPaidNet	587us-gaap_InterestPaidNet
Income taxes paid	3,938us-gaap_IncomeTaxesPaidNet	1,305us-gaap_IncomeTaxesPaidNet
Capital expenditures included in accounts payable	$ 3,106	$ 3,035

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The net cash outflow (inflow) related to stock option and other deposits during the period.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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Amount of cash outflow for 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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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services.

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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The increase (decrease) during the reporting period in the value of expenditures made during the current reporting period for benefits that will be received over a period of years. Deferred charges differ from prepaid expenses in that they usually extend over a long period of time and may or may not be regularly recurring costs of operation.

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The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable.

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The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes.

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No definition available.

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The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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The increase (decrease) during the reporting period in other expenses incurred but not yet paid.

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The increase (decrease) during the reporting period in other assets used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets, other noncurrent assets, or a combination of other current and noncurrent assets.

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The increase (decrease) during the reporting period in other liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current liabilities, other noncurrent liabilities, or a combination of other current and noncurrent liabilities.

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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No definition available.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow to reacquire common stock during the period.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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