SCHEDULE 13G

Amendment No. 0
Intellon Coporation
Common Stock
Cusip #45816W504

Cusip #45816W504
Item 1:	Reporting Person - Northern Neck Investors Corporation
Item 4:	Delaware
Item 5:	3,047,937
Item 6:	0
Item 7:	3,047,937
Item 8:	0
Item 9:	3,047,937
Item 11:	10.178%
Item 12:	    CO

Cusip #45816W504
Item 1:	Reporting Person - Edward C. Johnson 3d
Item 4:	United States of America
Item 5:	0
Item 6:	0
Item 7:	3,047,937
Item 8:	0
Item 9:	3,047,937
Item 11:	10.178%
Item 12:	IN



	SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
	FILED PURSUANT TO RULE 13d-1(c)




Item 1(a).	Name of Issuer:

		Intellon Coporation

Item 1(b).	Name of Issuer's Principal Executive Offices:

		5100 W Silver Springs Blvd
		Ocala, FL  34482


Item 2(a).	Name of Person Filing:

		Northern Neck Investors Corporation

Item 2(b).	Address or Principal Business Office or, if None, Residence:

		82 Devonshire Street, Boston, Massachusetts  02109

Item 2(c).	Citizenship:

		Not applicable

Item 2(d).	Title of Class of Securities:

		Common Stock

Item 2(e).	CUSIP Number:

		45816W504

Item 3.	This statement is filed pursuant to Rule 13d-1(c)

Item 4.	Ownership

(a)	Amount Beneficially Owned:	3,047,937

(b)	Percent of Class:	10.178%

(c)	Number of shares as to which such person has:

	(i)	sole power to vote or to direct the vote:	3,047,937

	(ii)	shared power to vote or to direct the vote:	0

	(iii)	sole power to dispose or to direct the disposition of:	3,047,937

	(iv)	shared power to dispose or to direct the disposition of:	0



Item 5.	Ownership of Five Percent or Less of a Class.

	Not applicable.

Item 6.	Ownership of More than Five Percent on Behalf of Another Person.

	Various persons have the right to receive or the power to direct
	the receipt of dividends from, or the proceeds from the sale of, the
	Common Stock of Intellon Coporation.  The interest of one person,
	Fidelity Investors III Limited Partnership, a Delaware limited
	partnership, in the Common Stock of Intellon Coporation, amounted to
	2,018,161 shares or 6.740% of the total outstanding Common Stock at
	December 31, 2007.

Item 7.	Identification and Classification of the Subsidiary Which Acquired the
	Security Being Reported on By the Parent Holding Company.

	See attached Exhibit A.

Item 8.	Identification and Classification of Members of the Group.

	Not applicable.  See attached Exhibit A.

Item 9.	Notice of Dissolution of Group.

	Not applicable.

Item 10.Certification.

	By signing below I certify that, to the best of my knowledge and belief,
	the securities referred to above were acquired in the ordinary course of
	business and were not acquired for the purpose of and do not have the
	effect of changing or influencing the control of the issuer of such
	securities and were not acquired in connection with or as a participant
	in any transaction having such purpose or effect.

Signature

	After reasonable inquiry and to the best of my knowledge and belief, I
	certify that the information set forth in this statement is true,
	complete and correct.

February 14, 2008
Date

By /s/ Andrew Flaster
	Andrew Flaster
	Vice President of Northern Neck Investors Corp.








	SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
	FILED PURSUANT TO RULE 13d-1(c)



	The ownership of one person, Fidelity Investors III Limited Partnership,
amounted to 2,018,161 shares or 6.740% of the Common Stock outstanding. Fidelity
Investors III Limited Partnership has its principal businessoffice at 82
Devonshire Street, Boston, Massachusetts 02109.

	Fidelity Investors III Limited Partnership ("FILP III"), 82 Devonshire
Street, Boston, Massachusetts 02109, a Delaware limited partnership, is the
beneficial owner of 2,018,161 shares or 6.740% of the outstanding common stock
of the Company.   Northern Neck Investors Corporation, a Delaware corporation,
is the general partner and investment manager of FILP III, and is an investment
manager registered under Section 203 of the Investment Advisers Act of 1940.

Fidelity Ventures III Limited Partnership ("FVIII"), 82 Devonshire Street,
Boston, Massachusetts 02109, is the beneficial owner of 782,916 shares or
2.614% of the outstanding common stock of the Company.  FVIII is a Delaware
limited partnership.  The general partner of FVIII is Fidelity Ventures Advisors
III limited partnership, a Delaware limited partnership.  The general partner of
Fidelity Ventures Advisors III is Northern Neck Investors Corporation., a
Delaware corporation.  The limited partners of FVIII are Fidelity Investors III
Limited Partnership and Fidelity International Limited.

Fidelity Ventures Principals III Limited Partnership ("FVPIII"), 82 Devonshire
Street, Boston, Massachusetts 02109, is the beneficial owner of 22,620 shares or
0.076% of the outstanding common stock of the Company.  FVPIII is a Delaware
limited partnership.  The general partner of FVPIII is Fidelity Ventures
Advisors III Limited Partnership, a Delaware limited partnership.  The general
partner of Fidelity Ventures Advisors III is Northern Neck Investors
Corporation., a Delaware corporation.  The limited partners of FVPIII are
members of the investment management team of Fidelity Ventures III.

Fidelity Ventures Principals I LLC ("FVPI"), 82 Devonshire Street, Boston,
Massachusetts 02109, is the beneficial owner of 224,240 shares or 0.749% of the
outstanding common stock of the Company.  FVPI is a Delaware limited liability
company.  The managing member of FVPI is Fidelity Capital Associates, Inc., a
elaware corporation.  Fidelity Capital Associates, Inc. is a wholly owned
subsidiary of FMR LLC.  The members of FVPI are members of the investment
management team of FVPI.

	Certain members of the family of Edward C. Johnson 3d are owners,
directly or through trusts, of shares of Northern Neck Investors Corporation.

	SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
	FILED PURSUANT TO RULE 13d-1(c)
	RULE 13d-1(f)(1)  AGREEMENT

	The undersigned persons, on February 14, 2008, agree and consent to
the joint filing on their behalf of this Schedule 13G in connection with their
beneficial ownership of the Common Stock of Intellon Coporation at December
31,2007.

	Northern Neck Investors Corporation

	By /s/ Andrew Flaster
	Andrew Flaster
	Vice President of Northern Neck Investors Corp.

	Edward C. Johnson 3d

	By /s/ Eric D. Roiter
	Eric D. Roiter
	Duly authorized under Power of Attorney dated December 30, 1997, by
	and on behalf of Edward C. Johnson 3d

	Fidelity Investors III Limited Partnership

	By /s/ Andrew Flaster
	Andrew Flaster
	Vice President of Northern Neck Investors Corp.