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SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Mar. 31, 2018
Accounting Policies [Abstract] |
Schedule of Inventories | Inventories consist of the following:
|  | March 31, |
|  | 2018 |  |  | 2017 |
|  | (dollars in thousands) |
Raw Materials and Materials-in-Progress |  | $ | 121,628 |  |  | $ | 122,736 |
Finished Cement |  |  | 24,089 |  |  |  | 24,428 |
Aggregates |  |  | 7,787 |  |  |  | 7,686 |
Gypsum Wallboard |  |  | 8,477 |  |  |  | 7,951 |
Paperboard |  |  | 8,602 |  |  |  | 8,635 |
Frac Sand |  |  | 1,696 |  |  |  | 2,907 |
Repair Parts and Supplies |  |  | 79,878 |  |  |  | 73,732 |
Fuel and Coal |  |  | 6,002 |  |  |  | 4,771 |
|  | $ | 258,159 |  |  | $ | 252,846 |
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, 2018 and 2017, consist of the following:
|  | March 31, 2018 |
|  | Amortization Period |  | Cost |  |  | Accumulated Amortization |  |  | Net |
|  | (dollars in thousands) |
Goodwill and Intangible Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Contracts and Relationships |  | 15 years |  | $ | 72,260 |  |  | $ | (58,732 | ) |  | $ | 13,528 |
Sales Contracts |  | 4 years |  |  | 2,500 |  |  |  | (2,500 | ) |  |  | — |
Permits |  | 40 years |  |  | 28,640 |  |  |  | (8,037 | ) |  |  | 20,603 |
Goodwill |  |  |  |  | 205,211 |  |  |  | — |  |  |  | 205,211 |
Total Goodwill and Intangible Assets |  |  |  | $ | 308,611 |  |  | $ | (69,269 | ) |  | $ | 239,342 |
|  | 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 |
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, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (dollars in thousands) |
Operating Units Selling, G&A |  | $ | 62,529 |  |  | $ | 57,004 |  |  | $ | 56,110 |
Corporate G&A |  |  | 41,205 |  |  |  | 33,940 |  |  |  | 37,193 |
|  | $ | 103,734 |  |  | $ | 90,944 |  |  | $ | 93,303 |
Schedule of Earnings Per Share |
|  | For the Years Ended March 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Weighted-Average Shares of Common Stock Outstanding |  |  | 48,141,226 |  |  |  | 47,931,518 |  |  |  | 49,471,157 |
Effect of Dilutive Shares: |  |  |  |  |  |  |  |  |  |  |  |
Assumed Exercise of Outstanding Dilutive Options |  |  | 1,013,764 |  |  |  | 1,000,556 |  |  |  | 1,146,807 |
Less Shares Repurchased from Proceeds of Assumed Exercised Options |  |  | (727,904 | ) |  |  | (726,223 | ) |  |  | (768,886 | )
Restricted Stock Units |  |  | 218,900 |  |  |  | 155,435 |  |  |  | 221,751 |
Weighted-Average Common Stock and Dilutive Securities Outstanding |  |  | 48,645,986 |  |  |  | 48,361,286 |  |  |  | 50,070,829 |

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