XML 17 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8

Basis Of Presentation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended			0 Months Ended
	Jul. 22, 2013	Apr. 16, 2013	May 23, 2006	Oct. 15, 2013 Subsequent Event
Limits On Use Of Authorized Capital Stock [Line Items]
Limits on use of authorized common stock shares			40
Limits on use of authorized preferred stock shares			2
Common Stock, Dividends, Per Share, Declared	$ 0.15	$ 0.15		$ 0.15

X

- Definition

Authorized Common Stock Shares Limits on Use

+ References

No definition available.

+ Details

Name:	expo_AuthorizedCommonStockSharesLimitsOnUse
Namespace Prefix:	expo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Authorized Preferred Stock Shares Limits on Use

+ References

No definition available.

+ Details

Name:	expo_AuthorizedPreferredStockSharesLimitsOnUse
Namespace Prefix:	expo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	expo_LimitsOnUseOfAuthorizedCapitalStockLineItems
Namespace Prefix:	expo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration