Commitments, Contingencies and Uncertainties (Union Matters) (Details)		12 Months Ended
	Sep. 04, 2019	Dec. 31, 2018	Sep. 03, 2018	Sep. 03, 2017	Sep. 03, 2016
Commitments and Contingencies Disclosure [Abstract]
Entity Number of Employees		1,100
Number of Employees Cover by Collective Bargaining Agreements, Percentage		37.00%
Collective Bargaining Agreement Effective Date		Sep. 03, 2016
Collective Bargaining Agreement Expiration Date		Sep. 03, 2019
Pay increase, percentage			3.00%	3.00%	3.00%
Collective Bargaining Agreement [Line Items]
Term of Collective Bargaining Agreement, Year		P3Y
Scenario, Forecast | Anticipated Negotiation
Collective Bargaining Agreement [Line Items]
Term of Collective Bargaining Agreement, Year	P3Y