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Revenues and Gross Profit (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenues And Gross Profit [Abstract] |
Total Revenues and Gross Profit by Product Line | The following table, which is reconciled to consolidated amounts, provides total revenues and gross profit by product line.
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
|  | (Dollars in Thousands) |
Total revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Building Materials Business: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregates |  | $ | 757,802 |  |  | $ | 666,966 |  |  | $ | 1,302,750 |  |  | $ | 1,094,139 |
Cement |  |  | 112,350 |  |  |  | 113,148 |  |  |  | 211,367 |  |  |  | 202,331 |
Ready mixed concrete |  |  | 241,178 |  |  |  | 277,202 |  |  |  | 452,335 |  |  |  | 495,738 |
Asphalt and paving services |  |  | 82,198 |  |  |  | 81,482 |  |  |  | 94,570 |  |  |  | 95,692 |
Less: interproduct revenues |  |  | (67,772 | ) |  |  | (78,178 | ) |  |  | (126,135 | ) |  |  | (138,843 | )
Products and services |  |  | 1,125,756 |  |  |  | 1,060,620 |  |  |  | 1,934,887 |  |  |  | 1,749,057 |
Freight |  |  | 77,473 |  |  |  | 68,821 |  |  |  | 133,223 |  |  |  | 113,126 |
Total Building Materials Business |  |  | 1,203,229 |  |  |  | 1,129,441 |  |  |  | 2,068,110 |  |  |  | 1,862,183 |
Magnesia Specialties: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services |  |  | 70,379 |  |  |  | 68,157 |  |  |  | 139,553 |  |  |  | 133,025 |
Freight |  |  | 5,860 |  |  |  | 4,805 |  |  |  | 10,760 |  |  |  | 9,199 |
Total Magnesia Specialties |  |  | 76,239 |  |  |  | 72,962 |  |  |  | 150,313 |  |  |  | 142,224 |
Total |  | $ | 1,279,468 |  |  | $ | 1,202,403 |  |  | $ | 2,218,423 |  |  | $ | 2,004,407 |
Gross profit (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Building Materials Business: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregates |  | $ | 251,422 |  |  | $ | 198,705 |  |  | $ | 349,482 |  |  | $ | 252,246 |
Cement |  |  | 42,229 |  |  |  | 41,305 |  |  |  | 56,007 |  |  |  | 65,038 |
Ready mixed concrete |  |  | 19,014 |  |  |  | 29,952 |  |  |  | 33,506 |  |  |  | 45,593 |
Asphalt and paving services |  |  | 15,742 |  |  |  | 18,347 |  |  |  | 7,415 |  |  |  | 10,169 |
Products and services |  |  | 328,407 |  |  |  | 288,309 |  |  |  | 446,410 |  |  |  | 373,046 |
Freight |  |  | 227 |  |  |  | 598 |  |  |  | 63 |  |  |  | 480 |
Total Building Materials Business |  |  | 328,634 |  |  |  | 288,907 |  |  |  | 446,473 |  |  |  | 373,526 |
Magnesia Specialties: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services |  |  | 29,212 |  |  |  | 24,870 |  |  |  | 55,819 |  |  |  | 49,933 |
Freight |  |  | (1,174 | ) |  |  | (1,028 | ) |  |  | (2,239 | ) |  |  | (2,203 | )
Total Magnesia Specialties |  |  | 28,038 |  |  |  | 23,842 |  |  |  | 53,580 |  |  |  | 47,730 |
Corporate |  |  | 195 |  |  |  | 3,168 |  |  |  | (279 | ) |  |  | 5,053 |
Total |  | $ | 356,867 |  |  | $ | 315,917 |  |  | $ | 499,774 |  |  | $ | 426,309 |

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