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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 29, 2016
Mar. 31, 2015
Antidilutive securities    
Anti-dilutive securities (in shares) 38,180 10,230
Earnings per share    
Net income attributable to Texas Roadhouse, Inc. and subsidiaries $ 35,593 $ 32,292
Basic EPS:    
Weighted-average common shares outstanding (in shares) 70,169,000 69,841,000
Basic EPS (in dollars per share) $ 0.51 $ 0.46
Diluted EPS:    
Weighted-average common shares outstanding (in shares) 70,169,000 69,841,000
Dilutive effect of stock options and nonvested stock (in shares) 595,000 687,000
Shares - diluted (in shares) 70,764,000 70,528,000
Diluted EPS (in dollars per share) $ 0.50 $ 0.46
Restricted Stock Units    
Antidilutive securities    
Anti-dilutive securities (in shares) 38,180 10,230