XML 55 R65.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Computation of Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Earnings Per Share [Abstract]
Shares excluded due to anti-dilution effects	0	0
Anti dilutive securities to be considered dilutive securities	301,206	281,031

X

- Definition

Anti dilutive Securities would have been considered dilutive if not for the net loss position.

+ References

No definition available.

+ Details

Name:	exp_AntiDilutiveSecuritiesToBeConsideredDilutiveSecurities
Namespace Prefix:	exp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

Name:	us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration