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Business Segments (Tables) | 12 Months Ended
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Mar. 31, 2016
Segment Reporting [Abstract] |
Financial Information Related to Operations by Segment | The following table sets forth certain financial information relating to our operations by segment
|  | For the Years Ended March 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (dollars in thousands) |
Revenues - |  |  |  |  |  |  |  |  |  |  |  |
Cement |  | $ | 528,499 |  |  | $ | 488,644 |  |  | $ | 438,224 |
Gypsum Wallboard |  |  | 461,457 |  |  |  | 437,514 |  |  |  | 387,016 |
Paperboard |  |  | 149,192 |  |  |  | 142,690 |  |  |  | 130,178 |
Oil and Gas Proppants |  |  | 57,591 |  |  |  | 81,381 |  |  |  | 19,557 |
Concrete and Aggregates |  |  | 128,073 |  |  |  | 107,892 |  |  |  | 96,908 |
|  |  | 1,324,812 |  |  |  | 1,258,121 |  |  |  | 1,071,883 |
Less: Intersegment Revenues |  |  | (73,862 | ) |  |  | (65,533 | ) |  |  | (62,094 | )
Less: Joint Venture Revenues |  |  | (107,458 | ) |  |  | (126,220 | ) |  |  | (111,393 | )
|  | $ | 1,143,492 |  |  | $ | 1,066,368 |  |  | $ | 898,396 |
|  | For the Years Ended March 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (dollars in thousands) |
Intersegment Revenues - |  |  |  |  |  |  |  |  |
Cement |  | $ | 13,939 |  |  | $ | 9,598 |  |  | $ | 8,952 |
Paperboard |  |  | 59,001 |  |  |  | 55,060 |  |  |  | 52,119 |
Concrete and Aggregates |  |  | 922 |  |  |  | 875 |  |  |  | 1,023 |
|  | $ | 73,862 |  |  | $ | 65,533 |  |  | $ | 62,094 |
Cement Sales Volumes (M tons) - |  |  |  |  |  |  |  |  |  |  |  |
Wholly-Owned |  |  | 3,903 |  |  |  | 3,744 |  |  |  | 3,580 |
Joint Venture |  |  | 875 |  |  |  | 1,055 |  |  |  | 1,013 |
|  |  | 4,778 |  |  |  | 4,799 |  |  |  | 4,593 |
|  | For the Years Ended March 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (dollars in thousands) |
Operating Earnings - |  |  |  |  |  |  |  |  |  |  |  |
Cement | $ |  | 137,854 |  |  | $ | 117,527 |  |  | $ | 89,486 |
Gypsum Wallboard |  |  | 159,352 |  |  |  | 145,871 |  |  |  | 114,852 |
Paperboard |  |  | 32,153 |  |  |  | 31,512 |  |  |  | 23,610 |
Oil and Gas Proppants |  |  | (68,466 | ) |  |  | (2,546 | ) |  |  | (4,890 | )
Concrete and Aggregates |  |  | 9,807 |  |  |  | 6,736 |  |  |  | 212 |
Other, net |  |  | 2,328 |  |  |  | 3,201 |  |  |  | 1,368 |
Sub-Total |  |  | 273,028 |  |  |  | 302,301 |  |  |  | 224,638 |
Corporate General and Administrative |  |  | (37,193 | ) |  |  | (30,751 | ) |  |  | (24,552 | )
Acquisition, Litigation and Other Expense |  |  | — |  |  |  | (6,880 | ) |  |  | — |
Earnings Before Interest and Income Taxes |  |  | 235,835 |  |  |  | 264,670 |  |  |  | 200,086 |
Interest Expense, net |  |  | (16,583 | ) |  |  | (11,743 | ) |  |  | (18,282 | )
Earnings Before Income Taxes |  | $ | 219,252 |  |  | $ | 252,927 |  |  | $ | 181,804 |
Cement Operating Earnings - |  |  |  |  |  |  |  |  |  |  |  |
Wholly-Owned |  | $ | 98,771 |  |  | $ | 72,560 |  |  | $ | 51,675 |
Joint Ventures |  |  | 39,083 |  |  |  | 44,967 |  |  |  | 37,811 |
|  | $ | 137,854 |  |  | $ | 117,527 |  |  | $ | 89,486 |
Capital Expenditures - |  |  |  |  |  |  |  |  |  |  |  |
Cement |  | $ | 20,262 |  |  | $ | 27,086 |  |  | $ | 12,226 |
Gypsum Wallboard |  |  | 4,832 |  |  |  | 7,129 |  |  |  | 4,825 |
Paperboard |  |  | 5,542 |  |  |  | 1,888 |  |  |  | 3,354 |
Oil and Gas Proppants |  |  | 40,144 |  |  |  | 61,484 |  |  |  | 34,264 |
Concrete and Aggregates |  |  | 18,783 |  |  |  | 13,851 |  |  |  | 4,572 |
Other, net |  |  | — |  |  |  | 135 |  |  |  | 249 |
|  | $ | 89,563 |  |  | $ | 111,573 |  |  | $ | 59,490 |
Depreciation , Depletion and Amortization - |  |  |  |  |  |  |  |  |  |  |  |
Cement |  | $ | 33,400 |  |  | $ | 31,839 |  |  | $ | 31,829 |
Gypsum Wallboard |  |  | 19,988 |  |  |  | 20,092 |  |  |  | 20,981 |
Paperboard |  |  | 8,312 |  |  |  | 8,251 |  |  |  | 8,716 |
Oil and Gas Proppants |  |  | 27,227 |  |  |  | 8,839 |  |  |  | 1,707 |
Concrete and Aggregates |  |  | 6,260 |  |  |  | 5,533 |  |  |  | 5,205 |
Corporate and Other |  |  | 1,918 |  |  |  | 1,745 |  |  |  | 1,583 |
|  | $ | 97,105 |  |  | $ | 76,299 |  |  | $ | 70,021 |
|  | As of March 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (dollars in thousands) |
Identifiable Assets |  |  |  |  |  |  |  |  |  |  |  |
Cement |  | $ | 819,994 |  |  | $ | 777,956 |  |  | $ | 762,578 |
Gypsum Wallboard |  |  | 392,523 |  |  |  | 403,279 |  |  |  | 412,566 |
Paperboard |  |  | 127,371 |  |  |  | 123,519 |  |  |  | 125,045 |
Oil and Gas Proppants |  |  | 409,497 |  |  |  | 455,572 |  |  |  | 92,199 |
Concrete and Aggregates |  |  | 106,634 |  |  |  | 96,610 |  |  |  | 87,364 |
Other, net |  |  | 27,616 |  |  |  | 23,390 |  |  |  | 31,777 |
|  | $ | 1,883,635 |  |  | $ | 1,880,326 |  |  | $ | 1,511,529 |
Segment Breakdown of Goodwill | The segment breakdown of goodwill at March 31, 2016 and 2015 is as follows:
|  | For the Years Ended March 31, |
|  | 2016 |  |  | 2015 |
|  | (dollars in thousands) |
Cement |  | $ | 9,729 |  |  | $ | 8,359 |
Gypsum Wallboard |  |  | 116,618 |  |  |  | 116,618 |
Paperboard |  |  | 7,538 |  |  |  | 7,538 |
|  | $ | 133,885 |  |  | $ | 132,515 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8736-108599 + Details
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