Business, Product and Geographical Area Information and Concentration of Risk (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of net sales by end market segment applications

Net sales by end market applications and by timing of control transfer for each period presented were as follows (in millions of dollars):

	Quarter Ended
	March 31,
	2019		2018
Net sales:
Aero/HS products	$	198.5	$	170.2
Automotive Extrusions	53.0		60.5
GE products	130.0		143.3
Other products	13.7		14.0
Total net sales	$	395.2	$	388.0
Timing of revenue recognition:
Products transferred at a point in time	$	131.8	$	156.6
Products transferred over time	263.4		231.4
Total net sales	$	395.2	$	388.0

Schedule of income taxes paid by geographical area

Geographic information for income taxes paid for each period presented was as follows (in millions of dollars):

	Quarter Ended
	March 31,
	2019		2018
Income taxes paid:
Domestic	$	0.1	$	0.2
Foreign	0.8		—
Total income taxes paid	$	0.9	$	0.2

Schedule of information for contractual delivery of primary aluminum supply from major suppliers

Information about primary aluminum supply from our major suppliers for each period presented was as follows:

	Quarter Ended
	March 31,
	2019		2018
Percentage of total primary aluminum supply (lbs):
Supply from our top five major suppliers	71	%	81	%
Supply from our largest supplier	20	%	39	%
Supply from our second and third largest suppliers combined	28	%	27	%