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Financial Information Related to Operations by Segment (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2018 USD ($) kT | Mar. 31, 2017 USD ($) kT | Mar. 31, 2016 USD ($) kT
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 284,713 | $ 359,371 | $ 376,315 | $ 366,121 | $ 278,663 | $ 302,395 | $ 332,658 | $ 297,504 | $ 1,386,520 | $ 1,211,220 | $ 1,143,492
Less: Joint Venture Revenue |  |  |  |  |  |  |  |  | (105,884) | (105,916) | (107,458)
Operating Earnings |  |  |  |  |  |  |  |  | 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 | 48,725 | $ 51,388 | $ 92,319 | $ 79,530 | 54,181 | $ 83,689 | $ 89,373 | $ 67,276 | 271,962 | 294,519 | 219,252
Capital Expenditures |  |  |  |  |  |  |  |  | 131,957 | 56,938 | 89,563
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 114,015 | 91,791 | 97,105
Identifiable Assets | 2,368,003 |  |  |  | 2,247,124 |  |  |  | 2,368,003 | 2,247,124 | 1,883,635
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,580,528 | 1,396,252 | 1,324,812
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (88,124) | (79,116) | (73,862)
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Earnings |  |  |  |  |  |  |  |  | 284 |  |
Capital Expenditures |  |  |  |  |  |  |  |  | 461 | 697 |
Identifiable Assets | 104,367 |  |  |  | 22,018 |  |  |  | 104,367 | 22,018 | 27,616
Cement [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 651,750 | $ 566,321 | $ 528,499
Cement Sales Volume | kT |  |  |  |  |  |  |  |  | 5,365 | 4,871 | 4,778
Operating Earnings |  |  |  |  |  |  |  |  | $ 179,151 | $ 153,525 | $ 137,854
Capital Expenditures |  |  |  |  |  |  |  |  | 45,088 | 32,790 | 20,262
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 50,891 | 36,727 | 33,400
Identifiable Assets | 1,247,504 |  |  |  | 1,234,617 |  |  |  | $ 1,247,504 | $ 1,234,617 | $ 819,994
Cement [Member] | Operating Segments [Member] | Wholly-Owned [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cement Sales Volume | kT |  |  |  |  |  |  |  |  | 4,453 | 3,934 | 3,903
Operating Earnings |  |  |  |  |  |  |  |  | $ 135,732 | $ 111,139 | $ 98,771
Cement [Member] | Operating Segments [Member] | Joint Venture [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cement Sales Volume | kT |  |  |  |  |  |  |  |  | 912 | 937 | 875
Operating Earnings |  |  |  |  |  |  |  |  | $ 43,419 | $ 42,386 | $ 39,083
Cement [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (16,442) | (15,781) | (13,939)
Concrete and Aggregates [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 157,013 | 154,592 | 128,073
Operating Earnings |  |  |  |  |  |  |  |  | 17,854 | 18,072 | 9,807
Capital Expenditures |  |  |  |  |  |  |  |  | 4,977 | 6,528 | 18,783
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 7,931 | 7,931 | 6,260
Identifiable Assets | 104,851 |  |  |  | 110,413 |  |  |  | 104,851 | 110,413 | 106,634
Concrete and Aggregates [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (1,335) | (1,262) | (922)
Gypsum Wallboard [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 491,779 | 473,651 | 461,457
Operating Earnings |  |  |  |  |  |  |  |  | 158,551 | 159,866 | 159,352
Capital Expenditures |  |  |  |  |  |  |  |  | 19,382 | 11,393 | 4,832
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 18,179 | 18,728 | 19,988
Identifiable Assets | 386,041 |  |  |  | 379,414 |  |  |  | 386,041 | 379,414 | 392,523
Paperboard [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 181,742 | 167,065 | 149,192
Operating Earnings |  |  |  |  |  |  |  |  | 32,758 | 37,601 | 32,153
Capital Expenditures |  |  |  |  |  |  |  |  | 5,177 | 3,996 | 5,542
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 8,694 | 8,425 | 8,312
Identifiable Assets | 123,819 |  |  |  | 124,356 |  |  |  | 123,819 | 124,356 | 127,371
Paperboard [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (70,347) | (62,073) | (59,001)
Oil and Gas Proppants [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 85,496 | 34,623 | 57,591
Operating Earnings |  |  |  |  |  |  |  |  | (6,423) | (14,633) | (68,466)
Capital Expenditures |  |  |  |  |  |  |  |  | 56,872 | 1,534 | 40,144
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 25,687 | 18,255 | 27,227
Identifiable Assets | $ 401,421 |  |  |  | $ 376,306 |  |  |  | 401,421 | 376,306 | 409,497
Other [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 12,748 |  |
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | $ 2,633 | $ 1,725 | $ 1,918

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