Significant Accounting Policies (Schedule of Common Stock Outstanding) (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, Beginning of Year (in shares)	27,437,844	27,973,281	0
Issuance Related to Separation and Distribution (in shares)	0	0	27,967,509
Retirement Related to Stock Repurchase (in shares)	(1,717,497)	(708,245)	0
Issuance Related to Stock-Based Compensation (in shares)	212,271	172,808	5,772
Balance, End of Year (in shares)	25,932,618	27,437,844	27,973,281