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Financial Information Related to Operations by Segment (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2017 USD ($) T | Mar. 31, 2016 USD ($) T | Mar. 31, 2015 USD ($) T
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 278,663 | $ 302,395 | $ 332,658 | $ 297,504 | $ 252,132 | $ 277,409 | $ 328,988 | $ 284,963 | $ 1,211,220 | $ 1,143,492 | $ 1,066,368
Less: Joint Venture Revenues |  |  |  |  |  |  |  |  | (105,916) | (107,458) | (126,220)
Operating Earnings |  |  |  |  |  |  |  |  | 356,570 | 273,028 | 302,301
Corporate General and Administrative Expense |  |  |  |  |  |  |  |  | (33,940) | (37,193) | (30,751)
Acquisition, Litigation and Other Expense |  |  |  |  |  |  |  |  | (5,480) |  | (6,880)
Earnings Before Interest and Income Taxes |  |  |  |  |  |  |  |  | 317,150 | 235,835 | 264,670
Interest Expense, Net |  |  |  |  |  |  |  |  | (22,631) | (16,583) | (11,743)
Earnings before Income Taxes | 54,181 | $ 83,689 | $ 89,373 | $ 67,276 | 52,322 | $ 68,205 | $ 42,840 | $ 55,885 | 294,519 | 219,252 | 252,927
Capital Expenditures |  |  |  |  |  |  |  |  | 56,938 | 89,563 | 111,573
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 91,791 | 97,105 | 76,299
Identifiable Assets | 2,247,124 |  |  |  | 1,883,635 |  |  |  | 2,247,124 | 1,883,635 | 1,880,326
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,396,252 | 1,324,812 | 1,258,121
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (79,116) | (73,862) | (65,533)
Other, net [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Earnings |  |  |  |  |  |  |  |  | 2,139 | 2,328 | 3,201
Capital Expenditures |  |  |  |  |  |  |  |  | 697 |  | 135
Identifiable Assets | 22,018 |  |  |  | 27,616 |  |  |  | 22,018 | 27,616 | 23,390
Cement [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 566,321 | $ 528,499 | $ 488,644
Cement Sales Volume | T |  |  |  |  |  |  |  |  | 4,871 | 4,778 | 4,799
Operating Earnings |  |  |  |  |  |  |  |  | $ 153,525 | $ 137,854 | $ 117,527
Capital Expenditures |  |  |  |  |  |  |  |  | 32,790 | 20,262 | 27,086
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 36,727 | 33,400 | 31,839
Identifiable Assets | 1,234,617 |  |  |  | 819,994 |  |  |  | $ 1,234,617 | $ 819,994 | $ 777,956
Cement [Member] | Operating Segments [Member] | Wholly-Owned [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cement Sales Volume | T |  |  |  |  |  |  |  |  | 3,934 | 3,903 | 3,744
Operating Earnings |  |  |  |  |  |  |  |  | $ 111,139 | $ 98,771 | $ 72,560
Cement [Member] | Operating Segments [Member] | Joint Venture [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cement Sales Volume | T |  |  |  |  |  |  |  |  | 937 | 875 | 1,055
Operating Earnings |  |  |  |  |  |  |  |  | $ 42,386 | $ 39,083 | $ 44,967
Cement [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (15,781) | (13,939) | (9,598)
Gypsum Wallboard [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 473,651 | 461,457 | 437,514
Operating Earnings |  |  |  |  |  |  |  |  | 159,866 | 159,352 | 145,871
Capital Expenditures |  |  |  |  |  |  |  |  | 11,393 | 4,832 | 7,129
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 18,728 | 19,988 | 20,092
Identifiable Assets | 379,414 |  |  |  | 392,523 |  |  |  | 379,414 | 392,523 | 403,279
Paperboard [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 167,065 | 149,192 | 142,690
Operating Earnings |  |  |  |  |  |  |  |  | 37,601 | 32,153 | 31,512
Capital Expenditures |  |  |  |  |  |  |  |  | 3,996 | 5,542 | 1,888
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 8,425 | 8,312 | 8,251
Identifiable Assets | 124,356 |  |  |  | 127,371 |  |  |  | 124,356 | 127,371 | 123,519
Paperboard [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (62,073) | (59,001) | (55,060)
Oil and Gas Proppants [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 34,623 | 57,591 | 81,381
Operating Earnings |  |  |  |  |  |  |  |  | (14,633) | (68,466) | (2,546)
Capital Expenditures |  |  |  |  |  |  |  |  | 1,534 | 40,144 | 61,484
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 18,255 | 27,227 | 8,839
Identifiable Assets | 376,306 |  |  |  | 409,497 |  |  |  | 376,306 | 409,497 | 455,572
Concrete and Aggregates [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 154,592 | 128,073 | 107,892
Operating Earnings |  |  |  |  |  |  |  |  | 18,072 | 9,807 | 6,736
Capital Expenditures |  |  |  |  |  |  |  |  | 6,528 | 18,783 | 13,851
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 7,931 | 6,260 | 5,533
Identifiable Assets | $ 110,413 |  |  |  | $ 106,634 |  |  |  | 110,413 | 106,634 | 96,610
Concrete and Aggregates [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (1,262) | (922) | (875)
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | $ 1,725 | $ 1,918 | $ 1,745

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