Derivative Instruments (Gain Loss on Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended				217 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	$ 619		$ (1,708)		$ (1,855)		$ 2,254		$ 5,179
Warrants expiring April 30, 2015 (share Price effect) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	272	[1]	(1,288)	[1]	(440)	[1]	1,681	[1]
Warrants expiring April 30, 2015 (debt extinguishment) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	210	[2]	0	[2]	210	[2]	0	[2]
Warrants expiring March 29, 2016 (Share Price effect) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	333	[1]	(394)	[1]	(1,281)	[1]	555	[1]
Warrants expiring March 29, 2016 (debt extinguishment) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	138	[2]	0	[2]	138	[2]	0	[2]
Options to Contractors [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	14	[2]	(26)	[2]	(134)	[1]	18	[1]
Options to contractors (forfeiture) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative Instruments	$ 31	[3]	$ 0	[3]	$ 31	[3]	$ 0	[3]

[1] Change in derivative liability resulting from the fluctuation in the price of Fennec’s shares used to value the derivative instrument.

[2] As a result of the warrant exchange concluded on July 29, 2014, holders of warrants expiring April 30, 2015 and March 29, 2016 (the “Existing (or Eligible) Warrants”) could elect to exchange their Eligible Warrants for “New Warrants”. New Warrants were denominated in the Company’s functional currency and thus, no longer considered derivative instruments under ASCA 815-40. Eligible Warrants participating in the exchange were valued on July 29, 2014 using the Black-Scholes Model and the resulting gain from the extinguishment of derivative liability was realized.

[3] Options have a three year term from the date the contractual relationship is severed and unless approved by the board, never greater than the original seven year term established from the date of issuance. Options which remain unexercised once the contractual relationship is severed after the lesser of three years from the date of severance or the seven years from date of original grant, are considered to be forfeited.