Significant Accounting Policies (Schedule of Common Stock Outstanding) (Details) - shares		12 Months Ended
	Nov. 28, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, Beginning of Year (in shares)		0	0	0
Issuance Related to Separation and Distribution (in shares)	27,968,000	27,968,000	0	0
Issuance Related to Stock-Based Compensation (in shares)		5,000	0	0
Balance, End of Year (in shares)		27,973,281	0	0