Organization and Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Liabilities:
Interest rate swaps	$ (248)	$ (349)
Earn-out contingent consideration obligation	(1,613)	(1,848)
Assets:
Non-qualified Deferred Compensation Plan Investments	511	697
Fair Value, Inputs, Level 1 | Other Assets
Assets:
Non-qualified Deferred Compensation Plan Investments	511	697
Fair Value, Inputs, Level 2 | Interest Rate Swap
Liabilities:
Interest rate swaps	(248)	(349)
Fair Value, Inputs, Level 3 | Accrued Liabilities
Liabilities:
Earn-out contingent consideration obligation	(241)	(246)
Fair Value, Inputs, Level 3 | Other Liabilities
Liabilities:
Earn-out contingent consideration obligation	$ (1,372)	$ (1,602)