Selected Segment Data (Tables)

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Quarter Ended June 30,						Six Months Ended June 30,
Dollar amounts in millions	2016			2015			2016			2015
Net Sales
OSB	$	252.8		$	211.0		$	469.8		$	401.2
Siding	207.2			163.9			388.5			337.4
EWP	78.0			72.0			149.8			136.8
South America	41.0			38.7			71.5			74.6
Other	6.6			7.4			12.7			14.7
Intersegment Sales	(3.2		)	—			(5.3		)	—
	$	582.4		$	493.0		$	1,087.0		$	964.7
Operating profit (loss):
OSB	$	44.0		$	(18.1	)	$	59.3		$	(46.5	)
Siding	41.8			29.2			68.7			62.1
EWP	0.5			(2.3		)	(2.0		)	(6.4		)
South America	6.9			2.0			12.0			4.4
Other	(0.2		)	(1.0		)	(0.6		)	(1.9		)
Other operating credits and charges, net	(11.4		)	—			(11.4		)	(11.6		)
Loss on sale or impairment of long-lived assets, net	(0.7		)	(0.5		)	(0.7		)	(0.6		)
General corporate and other expenses, net	(27.2		)	(22.0		)	(51.2		)	(44.7		)
Other non-operating income (expense)	1.4			0.4			1.9			(1.8		)
Investment income	2.1			1.0			3.9			2.4
Interest expense, net of capitalized interest	(9.3		)	(7.2		)	(17.3		)	(14.7		)
Income (loss) from operations before taxes	47.9			(18.5		)	62.6			(59.3		)
Provision (benefit) for income taxes	16.2			1.0			20.6			(5.3		)
Net income (loss)	$	31.7		$	(19.5	)	$	42.0		$	(54.0	)