Background and Basis of Presentation (Details)	12 Months Ended
	Dec. 31, 2017 product_line segment	Jan. 31, 2014 $ / shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Par value (in usd per share) | $ / shares		$ 0.01
Number of reportable segments | segment	2
Number of Major Product Lines | product_line	5