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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 30, 2014	Sep. 30, 2014	Jul. 01, 2014	Apr. 01, 2014	Dec. 31, 2013	Sep. 24, 2013	Jun. 25, 2013	Mar. 26, 2013	Dec. 30, 2014	Dec. 31, 2013	Dec. 25, 2012
Antidilutive securities
Anti-dilutive securities (in shares)									16,740	23,520	292,193
Earnings per share
Net income attributable to Texas Roadhouse, Inc. and subsidiaries	$ 18,595	$ 18,881	$ 23,081	$ 26,465	$ 17,119	$ 17,170	$ 19,963	$ 26,171	$ 87,022	$ 80,423	$ 71,170
Basic EPS:
Weighted-average common shares outstanding									69,719,000	70,089,000	70,026,000
Basic EPS (in dollars per share)	$ 0.27us-gaap_EarningsPerShareBasic	$ 0.27us-gaap_EarningsPerShareBasic	$ 0.33us-gaap_EarningsPerShareBasic	$ 0.38us-gaap_EarningsPerShareBasic	$ 0.24us-gaap_EarningsPerShareBasic	$ 0.24us-gaap_EarningsPerShareBasic	$ 0.29us-gaap_EarningsPerShareBasic	$ 0.38us-gaap_EarningsPerShareBasic	$ 1.25us-gaap_EarningsPerShareBasic	$ 1.15us-gaap_EarningsPerShareBasic	$ 1.02us-gaap_EarningsPerShareBasic
Diluted EPS:
Weighted-average common shares outstanding									69,719,000	70,089,000	70,026,000
Dilutive effect of stock options and nonvested stock (in shares)									889,000	1,273,000	1,459,000
Shares - diluted									70,608,000	71,362,000	71,485,000
Diluted EPS (in dollars per share)	$ 0.26us-gaap_EarningsPerShareDiluted	$ 0.27us-gaap_EarningsPerShareDiluted	$ 0.33us-gaap_EarningsPerShareDiluted	$ 0.37us-gaap_EarningsPerShareDiluted	$ 0.24us-gaap_EarningsPerShareDiluted	$ 0.24us-gaap_EarningsPerShareDiluted	$ 0.28us-gaap_EarningsPerShareDiluted	$ 0.37us-gaap_EarningsPerShareDiluted	$ 1.23us-gaap_EarningsPerShareDiluted	$ 1.13us-gaap_EarningsPerShareDiluted	$ 1.00us-gaap_EarningsPerShareDiluted
Nonvested stock
Antidilutive securities
Anti-dilutive securities (in shares)									16,740	23,520
Stock Options
Antidilutive securities
Anti-dilutive securities (in shares)											292,193