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Stock-Based Compensation Arrangements Stock-Based Compensation Arrangements - Summary of Stock-Based Compensation Expense and Associated Tax Benefit Recognized (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation costs $ 189 $ 206 $ 343 $ 344
Portion capitalized as property and equipment [1] (3) (4) (7) (7)
Stock-based compensation expense recognized 186 $ 202 336 337
Tax benefit recognized from stock-based compensation awards     0 $ 4
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 1,900   $ 1,900  
[1] Six Months Ended July 2, 2017 July 3, 2016 (in thousands)Stock-based compensation costs$343 $344Portion capitalized as property and equipment (1)(7) (7)Stock-based compensation expense recognized$336 $337Excess tax benefit recognized from exercise of stock-based compensation awards $— $4