Quarterly Financial and Market Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial and Market Data

Quarterly financial and market data for the years ended December 31, 2020 and 2019 were:  

	First		Second			Third			Fourth
(In millions, except per share data and market price)	Quarter		Quarter			Quarter			Quarter
2020
Net sales	$	541.0	$	378.7		$	286.9		$	295.8
Gross margin	140.9		54.9				13.5		30.4
Operating income (loss)	65.7		6.4				(37.6	)		(20.4	)
Net income (loss)	42.4			(1.0	)	9.7				(19.4	)
Net income per common share:
Basic	$	0.51	$	(0.01	)	$	0.12		$	(0.23	)
Diluted	$	0.50	$	(0.01	)	$	0.12		$	(0.23	)
Market price:
High	$	79.89	$	47.91		$	46.71		$	56.00
Low	$	29.51	$	26.75		$	32.57		$	31.71
2019
Net sales	$	609.9	$	609.0		$	572.5		$	564.3
Gross margin	167.2		168.8			157.9			146.5
Operating income	102.8		115.1			109.9			97.4
Net income	72.2		80.9			80.3			73.2
Net income per common share:
Basic	$	0.85	$	0.95		$	0.94		$	0.87
Diluted	$	0.84	$	0.94		$	0.93		$	0.86
Market price:
High	$	72.65	$	80.88		$	85.33		$	80.29
Low	$	56.18	$	68.00		$	77.01		$	73.31