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EQUITY Share-based compensation expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Equity [Abstract]
Share based compensation expense in research and development expense	$ 16	$ 11	$ 26	$ 21
Share based compensation expense in selling, general and administrative expense	262	307	594	578
Share-based Compensation	$ 278	$ 318	$ 620	$ 599

X

- Definition

Share based compensation expense in research and development expense

+ References

No definition available.

+ Details

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X

- Definition

Share based compensation expense in selling, general and administrative expense

+ References

No definition available.

+ Details

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Namespace Prefix:	acfn_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
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X

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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