Lease Commitments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Operating Leased Assets [Line Items]
Percentage of facilities under operating lease	50.00%
Lease Expiration Date	Dec. 31, 2029
Accrued Rent	$ 32	$ 455
Maximum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	20 years
Minimum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years