Segment Information (Schedule Of Financial Information Related To Intersegment Revenue) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |||||||
Segment Information [Line Items] | ||||||||||
Intersegment Revenues | $ 11,875 | $ 10,208 | $ 22,736 | $ 21,283 | ||||||
Sales Volume | 817 | 775 | 1,491 | 1,477 | ||||||
Operating Earnings, Other, net | 115 | 175 | 36 | 892 | ||||||
Operating Earnings, Sub-total | 16,768 | 17,884 | 29,510 | 41,544 | ||||||
Corporate General and Administrative | (4,472) | (4,415) | (8,590) | (8,118) | ||||||
Earnings Before Interest and Taxes | 12,296 | 13,469 | 20,920 | 33,426 | ||||||
Interest Expense, Net | (4,557) | (3,148) | (9,142) | (8,438) | ||||||
Earnings Before Income Taxes | 7,739 | 10,321 | 11,778 | 24,988 | ||||||
Capital Expenditure, Other | 55 | [1] | 49 | [1] | 79 | [1] | ||||
Capital Expenditure, Total | 3,704 | [1] | 2,227 | [1] | 7,516 | [1] | 5,467 | [1] | ||
Depreciation, Depletion and Amortization, Other, net | 203 | [1] | 128 | [1] | 390 | [1] | 278 | [1] | ||
Depreciation, Depletion and Amortization, Total | 12,363 | [1] | 12,389 | [1] | 24,683 | [1] | 24,839 | [1] | ||
Cement [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Intersegment Revenues | 1,202 | 1,164 | 2,241 | 2,156 | ||||||
Operating Earnings, Other, net | 15,111 | 12,127 | 23,899 | 25,760 | ||||||
Capital Expenditure, Other | 2,088 | [1] | 1,160 | [1] | 4,208 | [1] | 3,279 | [1] | ||
Depreciation, Depletion and Amortization, Other, net | 3,703 | [1] | 3,606 | [1] | 7,433 | [1] | 7,340 | [1] | ||
Cement [Member] | Wholly-Owned Operations [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Operating Earnings, Other, net | 7,175 | 7,967 | 10,515 | 15,088 | ||||||
Cement [Member] | Joint Venture [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Operating Earnings, Other, net | 7,936 | 4,160 | 13,384 | 10,672 | ||||||
Gypsum Wallboard [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Operating Earnings, Other, net | (2,540) | 1,295 | (1,302) | 6,496 | ||||||
Capital Expenditure, Other | 701 | [1] | 435 | [1] | 2,014 | [1] | 555 | [1] | ||
Depreciation, Depletion and Amortization, Other, net | 5,267 | [1] | 5,456 | [1] | 10,484 | [1] | 10,922 | [1] | ||
Paperboard [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Intersegment Revenues | 10,452 | 8,857 | 20,134 | 18,820 | ||||||
Operating Earnings, Other, net | 4,038 | 3,833 | 7,068 | 7,627 | ||||||
Capital Expenditure, Other | 104 | [1] | 222 | [1] | 57 | [1] | ||||
Depreciation, Depletion and Amortization, Other, net | 2,127 | [1] | 2,260 | [1] | 4,252 | [1] | 4,519 | [1] | ||
Concrete And Aggregates [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Intersegment Revenues | 221 | 187 | 361 | 307 | ||||||
Operating Earnings, Other, net | 44 | 454 | (191) | 769 | ||||||
Capital Expenditure, Other | 811 | [1] | 577 | [1] | 1,023 | [1] | 1,497 | [1] | ||
Depreciation, Depletion and Amortization, Other, net | $ 1,063 | [1] | $ 939 | [1] | $ 2,124 | [1] | $ 1,780 | [1] | ||
Wholly-Owned Operations [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Sales Volume | 588 | 576 | 1,037 | 1,074 | ||||||
Joint Venture [Member] | ||||||||||
Segment Information [Line Items] | ||||||||||
Sales Volume | 229 | 199 | 454 | 403 | ||||||
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