XML 108 R44.htm IDEA: XBRL DOCUMENT
v3.20.1

Summary of Impact of Impairment on Net Book Value of Assets (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Net Book Value Before Impairment | $ 227,839 | $ 419,678
Impairment | (216,777) | (211,264)
Net Book Value After Impairment | 11,062 | 208,414
Operating Facilities [Member] |  |
Net Book Value Before Impairment | 170,324 | 331,520
Impairment | (164,449) | (151,910)
Net Book Value After Impairment | 5,875 | 179,610
Transload Locations [Member] |  |
Net Book Value Before Impairment | 23,264 | 86,741
Impairment | (21,815) | (59,354)
Net Book Value After Impairment | 1,449 | 27,387
Real Estate [Member] |  |
Net Book Value Before Impairment | 1,417 | 1,417
Impairment | (1,367) |
Net Book Value After Impairment | 50 | $ 1,417
Lease Right-of-Use Assets [Member] |  |
Net Book Value Before Impairment | 32,834 |
Impairment | (29,146) |
Net Book Value After Impairment | $ 3,688 |

X
- Definition Net book value after impairment of long lived assets. + References No definition available. + Details
Name: | exp_NetBookValueAfterImpairmentOfLongLivedAssets
Namespace Prefix: | exp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net book value before impairment of long lived assets. + References No definition available. + Details
Name: | exp_NetBookValueBeforeImpairmentOfLongLivedAssets
Namespace Prefix: | exp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760 + Details
Name: | us-gaap_TangibleAssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=exp_OperatingFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=exp_TransloadLocationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=exp_LeaseRightOfUseAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |