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Equity - Summary of Warrant Activity (Details)	6 Months Ended
	Jun. 30, 2017 $ / shares shares
Equity [Abstract]
Number of shares warrants, outstanding at beginning of year | shares	2,654,423
Number of shares warrants, granted | shares
Number of shares warrants, exercised | shares
Number of shares warrants, forfeited or expired | shares
Number of shares warrants, outstanding at end of year | shares	2,654,423
Weighted average exercise price, outstanding at beginning of year | $ / shares	$ 1.46
Weighted average exercise price, granted | $ / shares
Weighted average exercise price, exercised | $ / shares
Weighted average exercise price, forfeited or expired | $ / shares
Weighted average exercise price, outstanding at end of year | $ / shares	$ 1.46
Weighted average remaining contractual life	2 years 8 months 12 days

X

- Definition

Weighted Average Exercise Price, Outstanding at beginning of year.

+ References

No definition available.

+ Details

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Namespace Prefix:	ACFN_
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Balance Type:	na
Period Type:	instant

X

- Definition

Weighted average exercise price, exercised.

+ References

No definition available.

+ Details

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Namespace Prefix:	ACFN_
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X

- Definition

Weighted average exercise price, forfeited or expired.

+ References

No definition available.

+ Details

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Namespace Prefix:	ACFN_
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Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average exercise price, granted.

+ References

No definition available.

+ Details

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X

- References

No definition available.

+ Details

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X

- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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X

- Definition

Number of non-option equity instruments exercised by participants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Balance Type:	na
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X

- Definition

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Net number of non-option equity instruments granted to participants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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X

- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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