Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Segment Reporting

Table 18.1: Segment Reporting
	For the Year Ended December 31,
	2017			2016			2015
	(in thousands)
Net Sales:
Wallboard	$	474,189		$	447,679		$	407,982
Other	14,974			13,696			13,700
Total net sales	$	489,163		$	461,375		$	421,682
Operating income:
Wallboard	$	90,220		$	87,094		$	44,276
Other	(635		)	46			(271		)
Total operating income	$	89,585		$	87,140		$	44,005
Adjustments:
Interest expense	$	(11,788	)	$	(13,590	)	$	(16,432	)
Losses from equity investment	(187		)	(736		)	(750		)
Other expense, net	(1,196		)	(5,963		)	(751		)
Income before provision for income taxes	$	76,414		$	66,851		$	26,072
Depreciation and Amortization:
Wallboard	$	45,368		$	45,561		$	50,150
Other	1,092			1,085			1,158
Total depreciation and amortization	$	46,460		$	46,646		$	51,308

Net Sales By Geographic Region

Table 18.2: Details of Net Sales By Geographic Region
	For the Year Ended December 31,
	2017		2016		2015
	(in thousands)
United States	$	460,032	$	425,611	$	387,937
Canada	29,131		35,764		33,745
Net sales	$	489,163	$	461,375	$	421,682

Assets By Geographic Region

Table 18.3: Details of Assets By Geographic Region
	Fixed Assets				Total Assets
	As of December 31,				As of December 31,
	2017		2016		2017		2016
	(in thousands)
United States	$	290,324	$	304,807	$	622,836	$	617,050
Canada	3,679		3,031		19,098		17,699
Total	$	294,003	$	307,838	$	641,934	$	634,749