The restaurant industry has been extremely competitive recently, but one thing that steakhouse restaurant specialist Texas Roadhouse (NASDAQ: TXRH) has been able to do is to produce impressive growth. Restaurant margin fell almost half a percentage point to 17.1%, and Texas Roadhouse blamed wage inflation, higher payroll tax costs, gift card fees, and insurance reserve adjustments for the boost in expenses. For the most part, though, the company left its initial guidance from last quarter unchanged, including calls for positive comparable restaurant sales growth and labor inflation in the mid-single digit percentage range.