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Condensed Consolidating Statement of Earnings and Comprehensive Earnings (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Revenues | $ 252,132 | $ 277,409 | $ 328,988 | $ 284,963 | $ 223,780 | $ 291,529 | $ 284,808 | $ 266,251 | $ 1,143,492 | $ 1,066,368 | $ 898,396
Cost of Goods Sold |  |  |  |  |  |  |  |  | 911,875 | 812,235 | 712,937
Gross Profit | 57,361 | 68,865 | 44,294 | 61,097 | 43,522 | 79,149 | 75,061 | 56,401 | 231,617 | 254,133 | 185,459
Equity in Earnings of Unconsolidated Joint Venture |  |  |  |  |  |  |  |  | 39,083 | 44,967 | 37,811
Corporate General and Administrative Expense |  |  |  |  |  |  |  |  | (37,193) | (30,751) | (24,552)
Other Income |  |  |  |  |  |  |  |  | 2,328 | 3,201 | 1,368
Acquisition and Litigation Expense |  |  |  |  |  |  |  |  |  | (6,880) |
Interest Expense, Net |  |  |  |  |  |  |  |  | (16,583) | (11,743) | (18,282)
Earnings before Income Taxes | 52,322 | 68,205 | 42,840 | 55,885 | 44,698 | 77,866 | 74,577 | 55,786 | 219,252 | 252,927 | 181,804
Income Taxes |  |  |  |  |  |  |  |  | (66,660) | (66,074) | (57,561)
Net Earnings | $ 39,163 | $ 45,848 | $ 29,819 | $ 37,762 | $ 46,794 | $ 52,030 | $ 50,319 | $ 37,710 | 152,592 | 186,853 | 124,243
Net Actuarial Change in Benefit Plans, net of tax |  |  |  |  |  |  |  |  | 658 | 6,584 | (1,559)
Comprehensive Earnings |  |  |  |  |  |  |  |  | 153,250 | 193,437 | 122,684
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Equity in Earnings of Unconsolidated Joint Venture |  |  |  |  |  |  |  |  | (39,083) | (44,967) | (37,811)
Equity in Earnings of Subsidiaries |  |  |  |  |  |  |  |  | (160,018) | (166,640) | (126,340)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | (199,101) | (211,607) | (164,151)
Net Earnings |  |  |  |  |  |  |  |  | (199,101) | (211,607) | (164,151)
Net Actuarial Change in Benefit Plans, net of tax |  |  |  |  |  |  |  |  | (658) | (6,584) | 1,559
Comprehensive Earnings |  |  |  |  |  |  |  |  | (199,579) | (218,191) | (162,592)
Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Equity in Earnings of Unconsolidated Joint Venture |  |  |  |  |  |  |  |  | 39,083 | 44,967 | 37,811
Equity in Earnings of Subsidiaries |  |  |  |  |  |  |  |  | 160,018 | 166,640 | 126,340
Corporate General and Administrative Expense |  |  |  |  |  |  |  |  | (32,047) | (26,391) | (22,175)
Other Income |  |  |  |  |  |  |  |  | (398) | 157 | (474)
Acquisition and Litigation Expense |  |  |  |  |  |  |  |  |  | (1,661) |
Interest Expense, Net |  |  |  |  |  |  |  |  | (39,038) | (33,319) | (37,294)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | 127,618 | 150,393 | 104,208
Income Taxes |  |  |  |  |  |  |  |  | 24,974 | 36,460 | 20,035
Net Earnings |  |  |  |  |  |  |  |  | 152,592 | 186,853 | 124,243
Net Actuarial Change in Benefit Plans, net of tax |  |  |  |  |  |  |  |  | 658 | 6,584 | (1,559)
Comprehensive Earnings |  |  |  |  |  |  |  |  | 153,250 | 193,437 | 122,684
Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,143,492 | 1,066,368 | 898,396
Cost of Goods Sold |  |  |  |  |  |  |  |  | 911,875 | 812,235 | 712,937
Gross Profit |  |  |  |  |  |  |  |  | 231,617 | 254,133 | 185,459
Equity in Earnings of Unconsolidated Joint Venture |  |  |  |  |  |  |  |  | 39,083 | 44,967 | 37,811
Corporate General and Administrative Expense |  |  |  |  |  |  |  |  | (5,146) | (4,360) | (2,377)
Other Income |  |  |  |  |  |  |  |  | 2,726 | 3,044 | 1,842
Acquisition and Litigation Expense |  |  |  |  |  |  |  |  |  | (5,219) |
Interest Expense, Net |  |  |  |  |  |  |  |  | 22,455 | 21,576 | 19,012
Earnings before Income Taxes |  |  |  |  |  |  |  |  | 290,735 | 314,141 | 241,747
Income Taxes |  |  |  |  |  |  |  |  | (91,634) | (102,534) | (77,596)
Net Earnings |  |  |  |  |  |  |  |  | 199,101 | 211,607 | 164,151
Net Actuarial Change in Benefit Plans, net of tax |  |  |  |  |  |  |  |  | 658 | 6,584 | (1,559)
Comprehensive Earnings |  |  |  |  |  |  |  |  | $ 199,579 | $ 218,191 | $ 162,592

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