Stock-Based Compensation (Narrative)(Details) - USD ($)
|
12 Months Ended |
Dec. 27, 2015 |
Dec. 28, 2014 |
Dec. 29, 2013 |
| Stock-based compensation |
$ 1,718,000
|
$ 1,054,000
|
$ 531,000
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount |
$ 114,000
|
224,000
|
|
| ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedFairValueOfCommonStockPerShare |
$ 31.14
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value |
$ 600,000
|
1,900,000
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value |
600,000
|
$ 600,000
|
$ 300,000
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |
|
$ 11.12
|
$ 11.05
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized |
800,000
|
|
|
| Employee Service Share Based Compensation Costs Recognized in Event of Change of Control |
43,000
|
|
|
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options |
$ 3,800,000
|
|
|
| 2012 Omnibus Equity Incentive Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |
10 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
902,096
|
|
|
| Employee Stock Option [Member] | 2006 Equity Incentive Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
20.00%
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
5 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |
10 years
|
|
|
| Employee Stock Option [Member] | 2012 Omnibus Equity Incentive Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
20.00%
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
5 years
|
|
|
| Restricted Stock Units (RSUs) [Member] | 2012 Omnibus Equity Incentive Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
25.00%
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
4 years
|
|
|