XML 28 R30.htm IDEA: XBRL DOCUMENT v2.4.0.6

US SEISMIC SYSTEMS, INC. (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
US SEISMIC SYSTEMS, INC. [Abstract]
Preferred stock purchase USSI - April 2012	$ 2,250
Preferred stock purchase USSI	$ 2,500
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	92.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,180,000
fully diluted ownership	81.00%

X

- Definition

fully diluted ownership

+ References

No definition available.

+ Details

Name:	acfn_FullyDilutedOwnership
Namespace Prefix:	acfn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

USSI preferred stock purchase

+ References

No definition available.

+ Details

Name:	acfn_PreferredStockPurchaseUssi
Namespace Prefix:	acfn_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Preferred stock purchase USSI - April 2012

+ References

No definition available.

+ Details

Name:	acfn_PreferredStockPurchaseUssiApril2012
Namespace Prefix:	acfn_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	acfn_UsSeismicSystemsIncAbstract
Namespace Prefix:	acfn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section H

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration