Subsequent events	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent events	Subsequent events: Note Exchange On February 20, 2014, a note exchange agreement, or the Note Exchange Agreement, to which the Company, is a party was accepted by EuroSite Power Inc., or EuroSite Power, the Company’s majority owned subsidiary, pursuant to which the Company exchanged its 4% Senior Convertible Note Due 2015 in an aggregate principal amount of $1,100,000, originally issued on June 14, 2013, for a 4% Senior Convertible Note Due 2017 of like principal amount, or the New Notes. The exchange took place as part of EuroSite Power’s exchange of an aggregate principal amount of $4,000,000 of its 4% Senior Convertible Notes Due 2015, or the Notes, for a like principal amount of 4% Senior Convertible Notes Due 2017, or the New Notes. Accrued but unpaid interest on the Notes will be treated as accrued interest under the New Notes. Included among the investors exchanging their Notes for New Notes are: Bruno Meier, a director of EuroSite Power, in the amount of $250,000; Prime World Inc., a company controlled by Joan Giacinti, a director of EuroSite Power, in the amount of $300,000; Charles T. Maxwell, Chairman of the Board of Directors of the Company, in the amount of $250,000; Nettlestone Enterprises Limited, a shareholder of both the Company and EuroSite Power, in the amount of $300,000; Perastra Management S.A., an investor in the Company and EuroSite Power, in the amount of $1,500,000; and Yves Micheli, an investor in EuroSite Power, in the amount of $300,000. Noteholders Agreement The holders of the Notes were subject to and entitled to the benefits of the Noteholders Agreement, and such agreement was amended by the Note Exchange Agreements. The Noteholders Agreement remains in effect as to the New Notes (including with respect to Registration Rights and Guarantees), except it has been amended to reflect the maturity of the New Notes as June 14, 2017; provide that the initial conversion rate of the New Notes is 1,667 shares of common stock per $1,000 principal amount of the New Notes, subject to adjustment; and eliminate the noteholders’ options to extend the Notes. The Company has evaluated subsequent events through the date of this filing and determined that no other subsequent events occurred that would require recognition in the consolidated financial statements or disclosure in the notes thereto.

Subsequent events:

Note Exchange

On February 20, 2014, a note exchange agreement, or the Note Exchange Agreement, to which the Company, is a party was accepted by EuroSite Power Inc., or EuroSite Power, the Company’s majority owned subsidiary, pursuant to which the Company exchanged its 4% Senior Convertible Note Due 2015 in an aggregate principal amount of $1,100,000, originally issued on June 14, 2013, for a 4% Senior Convertible Note Due 2017 of like principal amount, or the New Notes. The exchange took place as part of EuroSite Power’s exchange of an aggregate principal amount of $4,000,000 of its 4% Senior Convertible Notes Due 2015, or the Notes, for a like principal amount of 4% Senior Convertible Notes Due 2017, or the New Notes. Accrued but unpaid interest on the Notes will be treated as accrued interest under the New Notes.

Included among the investors exchanging their Notes for New Notes are: Bruno Meier, a director of EuroSite Power, in the amount of $250,000; Prime World Inc., a company controlled by Joan Giacinti, a director of EuroSite Power, in the amount of $300,000; Charles T. Maxwell, Chairman of the Board of Directors of the Company, in the amount of $250,000; Nettlestone Enterprises Limited, a shareholder of both the Company and EuroSite Power, in the amount of $300,000; Perastra Management S.A., an investor in the Company and EuroSite Power, in the amount of $1,500,000; and Yves Micheli, an investor in EuroSite Power, in the amount of $300,000.

Noteholders Agreement

The holders of the Notes were subject to and entitled to the benefits of the Noteholders Agreement, and such agreement was amended by the Note Exchange Agreements. The Noteholders Agreement remains in effect as to the New Notes (including with respect to Registration Rights and Guarantees), except it has been amended to reflect the maturity of the New Notes as June 14, 2017; provide that the initial conversion rate of the New Notes is 1,667 shares of common stock per $1,000 principal amount of the New Notes, subject to adjustment; and eliminate the noteholders’ options to extend the Notes.

The Company has evaluated subsequent events through the date of this filing and determined that no other subsequent events occurred that would require recognition in the consolidated financial statements or disclosure in the notes thereto.