Contingencies (Details) $ in Thousands	9 Months Ended
	Sep. 24, 2016 USD ($)
The Water Works and Sewer Board of the City of Gadsden [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 10
Sandra D. Watts [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	50
Brenda Bridgeman [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 50