Segments

Segment information is presented in accordance with ASC 280, Segment Reporting, which establishes standards for reporting information about operating segments. It also establishes standards for related disclosures about customers, products and geographic areas. Operating segments are defined as components of an enterprise that engage in business activities that earn revenues, incur expenses and prepare separate financial information that is evaluated regularly by the Company’s Chief Operating Decision Maker ("CODM") in order to allocate resources and assess performance. Resources are allocated and performance is assessed by the CODM.

Based on the provisions of ASC 280, the Company has defined its operating segments by considering management structure and product offerings. This evaluation resulted in one reportable segment.

As discussed in Note 3, Discontinued Operations, the Company closed the sale of the Disposed Business on November 1, 2018, which was previously reported as the Mechanical Insulation segment. The previously reported amounts for the Mechanical Insulation segment have been reclassified to discontinued operations for all periods presented. The Company’s continuing operations now consist of what was previously reported as the Specialty Building Products segment for all periods presented.

Revenues are attributed to each country based on the location in which sales originate and in which assets are located. The following table provides information about the Company by geographic areas (in thousands):



	Year Ended December 31,
	2018		2017
United States	$	1,820,589	$	1,575,500
Canada	223,723		214,614
Total	$	2,044,312	$	1,790,114

For the years ended December 31, 2018 and 2017, no customer comprised more than 10% of net sales.

The following table sets forth property, plant and equipment, goodwill and intangibles by geographic area (in thousands):



	Year Ended December 31,
	2018		2017
Property, plant and equipment, net
United States	$	137,252	$	128,895
Canada	14,389		15,629
Total property, plant and equipment, net	$	151,641	$	144,524
Goodwill
United States	$	460,384	$	425,931
Canada	24,557		26,797
Total goodwill	$	484,941	$	452,728
Intangibles, net
United States	$	141,186	$	157,442
Canada	4,690		7,094
Total intangibles, net	$	145,876	$	164,536

The Company’s net sales by major product line are as follows (in thousands):



	Year Ended December 31,										Change
	2018					2017					$			%

Wallboard	$	781,257		38.2	%	$	701,467		39.2	%	$	79,790		11.4	%
Suspended ceiling systems	379,809			18.6	%	328,815			18.4	%	50,994			15.5	%
Metal framing	361,493			17.7	%	280,410			15.7	%	81,083			28.9	%
Complementary and other products	521,753			25.5	%	479,422			26.8	%	42,331			8.8	%
Total net sales	$	2,044,312		100.0	%	$	1,790,114		100.0	%	$	254,198		14.2	%
Total gross profit	$	590,359				$	522,189				$	68,170
Total gross margin	28.9		%			29.2		%			(0.3		)%