BUSINESS SEGMENTS (Tables)

12 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Financial Information Related to Operations by Segment

The table below sets forth certain financial information relating to our operations by segment.

	For the Years Ended March 31,
	2018			2017			2016
	(dollars in thousands)
Revenue -
Cement	$	651,750		$	566,321		$	528,499
Concrete and Aggregates		157,013			154,592			128,073
Gypsum Wallboard		491,779			473,651			461,457
Paperboard		181,742			167,065			149,192
Oil and Gas Proppants		85,496			34,623			57,591
Other		12,748			—			—
		1,580,528			1,396,252			1,324,812
Less: Intersegment Revenue		(88,124	)		(79,116	)		(73,862	)
Less: Joint Venture Revenue		(105,884	)		(105,916	)		(107,458	)
	$	1,386,520		$	1,211,220		$	1,143,492

	For the Years Ended March 31,
	2018		2017		2016
	(dollars in thousands)
Intersegment Revenue -
Cement	$	16,442	$	15,781	$	13,939
Concrete and Aggregates		1,335		1,262		922
Paperboard		70,347		62,073		59,001
	$	88,124	$	79,116	$	73,862
Cement Sales Volume (M tons) -
Wholly Owned		4,453		3,934		3,903
Joint Venture		912		937		875
		5,365		4,871		4,778

	For the Years Ended March 31,
	2018				2017			2016
				(dollars in thousands)
Operating Earnings -
Cement	$	179,151			$	153,525		$	137,854
Concrete and Aggregates		17,854				18,072			9,807
Gypsum Wallboard		158,551				159,866			159,352
Paperboard		32,758				37,601			32,153
Oil and Gas Proppants		(6,423	)			(14,633	)		(68,466	)
Other		284				—			—
Sub-Total		382,175				354,431			270,700
Corporate General and Administrative Expense		(41,205	)			(33,940	)		(37,193	)
Legal Settlements		(45,098	)			—			—
Other Non-Operating Income		3,728				2,139			2,328
Acquisition and Litigation Expense		—				(5,480	)		—
Earnings Before Interest and Income Taxes		299,600				317,150			235,835
Interest Expense, net		(27,638	)			(22,631	)		(16,583	)
Earnings Before Income Taxes	$	271,962			$	294,519		$	219,252
Cement Operating Earnings -
Wholly Owned	$	135,732			$	111,139		$	98,771
Joint Ventures		43,419				42,386			39,083
	$	179,151			$	153,525		$	137,854
Capital Expenditures -
Cement	$	45,088			$	32,790		$	20,262
Concrete and Aggregates		4,977				6,528			18,783
Gypsum Wallboard		19,382				11,393			4,832
Paperboard		5,177				3,996			5,542
Oil and Gas Proppants		56,872				1,534			40,144
Other, net		461				697			—
	$	131,957			$	56,938		$	89,563
Depreciation, Depletion and Amortization -
Cement	$	50,891			$	36,727		$	33,400
Concrete and Aggregates		7,931				7,931			6,260
Gypsum Wallboard		18,179				18,728			19,988
Paperboard		8,694				8,425			8,312
Oil and Gas Proppants		25,687				18,255			27,227
Corporate and Other		2,633				1,725			1,918
	$	114,015			$	91,791		$	97,105

	As of March 31,
	2018		2017		2016
	(dollars in thousands)
Identifiable Assets
Cement	$	1,247,504	$	1,234,617	$	819,994
Concrete and Aggregates		104,851		110,413		106,634
Gypsum Wallboard		386,041		379,414		392,523
Paperboard		123,819		124,356		127,371
Oil and Gas Proppants		401,421		376,306		409,497
Other, net		104,367		22,018		27,616
	$	2,368,003	$	2,247,124	$	1,883,635

Segment Breakdown of Goodwill

The segment breakdown of Goodwill at March 31,2018 and2017 is as follows:

	For the Years Ended March 31,
	2018		2017
	(dollars in thousands)
Cement	$	74,214	$	74,214
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538
Corporate and Other		6,841		—
	$	205,211	$	198,370

Summarized Financial Information for Joint Venture Unconsolidated

Summarized financial information for the Joint Venture that is not consolidated is set out below (this summarized financial information includes the total amount for the Joint Venture and not our 50% interest in those accounts):

	For the Years Ended March 31,
	2018		2017
	(dollars in thousands)
Revenue	$	216,533	$	215,569
Gross Margin	$	91,647	$	90,098
Earnings Before Income Taxes	$	86,838	$	84,772

	March 31, 2018		March 31, 2017
	(dollars in thousands)
Current Assets	$	71,089	$	73,767
Non-Current Assets	$	66,856	$	42,337
Current Liabilities	$	20,671	$	22,293