v2.4.0.6
Document And Entity Information
3 Months Ended
Jun. 30, 2011
Aug. 02, 2011
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag true  
Amendment Description Eagle Materials Inc., (the "Company") is filing this Amendment No. 1 to its Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, which was originally filed with the Securities and Exchange Commission ("SEC") on August 5, 2011 ("Original Form 10-Q"), to revise the previous accounting treatment related to the reversing of a $3.0 million accrual, which was made in a prior year, during the quarter ended June 30, 2011. This amendment to the Original Form 10-Q is being made in response to correspondence received from the SEC. We are restating our financial statements for three month period ended June 30, 2011 to treat the $3.0 million as a correction of an error in the prior year, rather than a reduction of cost of goods sold in the quarter ended June 30, 2011. Except for the above reversal of the accrual, the information in this Form 10-Q/A has not been updated to reflect events that occurred after August 5, 2011, the filing date of the Original Form 10-Q. Accordingly, this Form 10-Q/A should be read in conjunction with the Company's filings made with the SEC subsequent to the filing of the Original Form 10-Q. The following sections have been amended, without limitation:  
Document Period End Date Jun. 30, 2011  
Document Fiscal Year Focus 2011  
Document Fiscal Period Focus Q1  
Trading Symbol exp  
Entity Registrant Name EAGLE MATERIALS INC  
Entity Central Index Key 0000918646  
Current Fiscal Year End Date --03-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   44,905,926