Segment Information

We operate our business using two reportable segments: Wood Products and Building Materials Distribution. Corporate and Other results are presented as reconciling items to arrive at total net sales and operating income. There are no differences in our basis of measurement of segment profit or loss from those disclosed in Note 14, Segment Information, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" in our 2017 Form 10-K.

Wood Products and Building Materials Distribution segment sales to external customers, including related parties, by product line are as follows:



	Three Months Ended September 30				Nine Months Ended September 30
	2018		2017		2018		2017
	(millions)
Wood Products (a)
LVL	$	9.2	$	10.9	$	32.5	$	36.2
I-joists	8.5		7.9		26.3		26.7
Other engineered wood products	7.3		6.1		19.6		16.5
Plywood and veneer	82.8		92.4		266.5		244.0
Lumber	20.3		22.9		70.2		66.4
Byproducts (b)	23.8		13.7		68.7		41.0
Particleboard	10.6		12.2		33.3		34.7
Other	16.7		14.9		46.9		32.6
	179.2		181.0		564.1		498.1

Building Materials Distribution
Commodity	554.8		505.6		1,648.0		1,338.4
General line	385.8		354.4		1,093.9		971.7
Engineered wood products	218.6		185.7		623.4		531.8
	1,159.3		1,045.6		3,365.4		2,842.0
	$	1,338.5	$	1,226.6	$	3,929.5	$	3,340.0

___________________________________

(a)

Amounts represent sales to external customers. Sales are calculated after intersegment sales eliminations to our Building Materials Distribution segment, as well as the cost of EWP rebates and sales allowances provided at various stages of the supply chain (including distributors, retail lumberyards, and professional builders). For the nine months ended September 30, 2018, approximately 73% of Wood Products' EWP sales volumes were to our Building Materials Distribution segment.


(b)	As discussed in Note 3, Revenues, prior period amounts have not been adjusted under the modified retrospective method upon adoption of ASC Topic 606, Revenue from Contracts with Customers.

An analysis of our operations by segment is as follows:



	Three Months Ended September 30						Nine Months Ended September 30
	2018			2017			2018			2017
	(thousands)
Net sales by segment
Wood Products	$	402,672		$	366,920		$	1,226,146		$	1,042,854
Building Materials Distribution	1,159,304			1,045,646			3,365,468			2,842,035
Intersegment eliminations and other (a)	(223,464		)	(185,922		)	(662,129		)	(544,863		)
Total net sales	$	1,338,512		$	1,226,644		$	3,929,485		$	3,340,026

Segment operating income
Wood Products (b)	$	13,929		$	24,027		$	76,532		$	46,810
Building Materials Distribution	23,504			39,379			103,605			93,853
Total segment operating income	37,433			63,406			180,137			140,663
Unallocated corporate and other	(6,978		)	(7,308		)	(23,822		)	(20,942		)
Income from operations	$	30,455		$	56,098		$	156,315		$	119,721

___________________________________


(a)	Primarily represents intersegment sales from our Wood Products segment to our Building Materials Distribution segment.


(b)	Wood Products segment operating income for the three and nine months ended September 30, 2018, includes an impairment loss of $10.4 million upon classifying certain Wood Products facilities in Northeast Oregon as held for sale. For additional information, see Note 6, Assets Held For Sale.