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Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Schedule of Inventories

Inventories consist of the following:

		March 31,
		2017				2016
		(dollars in thousands)
Raw Materials and Materials-in-Progress		$	122,736			$	119,060
Finished Cement			24,428				21,834
Gypsum Wallboard			7,951				5,839
Paperboard			8,635				7,575
Frac Sand			2,907				5,501
Aggregates			7,686				10,660
Repair Parts and Supplies			73,732				68,155
Fuel and Coal			4,771				4,971
		$	252,846			$	243,595

Schedule of Property, Plant and Equipment Estimated Lives

The estimated lives of the related assets are as follows:

Plants		20 to 30 years
Buildings		20 to 40 years
Machinery and Equipment		3 to 25 years

Schedule of Intangible Assets, Including Impact of Impairment Charge

Intangible assets, including the impact of the impairment charges discussed above, at March 31, 2017 and 2016 consist of the following:

		March 31, 2017
		Amortization Period		Cost				Accumulated Amortization				Net
		(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships		15 years		$	72,260			$	(56,303	)		$	15,957
Sales Contracts		4 years			2,500				(2,500	)			—
Permits		40 years			28,440				(7,262	)		$	21,178
Goodwill					198,370				—			$	198,370
Total Goodwill and Intangible Assets				$	301,570			$	(66,065	)		$	235,505

		March 31, 2016
		Amortization Period		Cost				Amortization                        Expense				Impairment				Accumulated Amortization				Net
		(dollars in thousands)
Intangible Assets and Goodwill:
Customer contracts and relationships		15 years		$	63,260			$	11,634			$	34,999			$	(52,627	)		$	10,633
Sales contracts		4 years			2,500				625				—				(2,083	)		$	417
Permits		40 years			27,440				652				—				(6,548	)		$	20,892
Goodwill					133,885				—				—				—			$	133,885
Total intangible assets and goodwill				$	227,085			$	12,911			$	34,999			$	(61,258	)		$	165,827

Schedule of Total Selling, General and Administrative Expenses

Total selling, general and administrative expenses for each of the periods are summarized as follows:

		For the Years Ended March 31,
		2017				2016				2015
		(dollars in thousands)
Operating Units Selling, G&A		$	57,004			$	56,110			$	49,326
Corporate G&A			33,940				37,193				30,751
		$	90,944			$	93,303			$	80,077

Schedule of Earnings Per Share

		For the Years Ended March 31,
		2017				2016				2015
Weighted-Average Shares of Common Stock    Outstanding			47,931,518				49,471,157				49,604,249
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options			1,000,556				1,146,807				1,350,556
Less Shares Repurchased from Proceeds of Assumed    Exercised Options			(726,223	)			(768,886	)			(868,636	)
Restricted Stock Units			155,435				221,751				286,074
Weighted-Average Common Stock and Dilutive    Securities Outstanding			48,361,286				50,070,829				50,372,243

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-Publisher FASB
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