Subsequent Events - Additional Information (Detail) (USD $)								0 Months Ended			6 Months Ended							0 Months Ended		0 Months Ended
	Jun. 30, 2014	Jan. 31, 2014	Dec. 31, 2013	Jun. 30, 2014 Deferral Incentives [Member]	Dec. 31, 2013 Deferral Incentives [Member]	Jun. 30, 2014 Employees [Member]	Dec. 31, 2013 Employees [Member]	Aug. 12, 2014 Subsequent Event [Member]	Aug. 01, 2014 Subsequent Event [Member] Employees	Jul. 22, 2014 Subsequent Event [Member]	Jun. 30, 2014 Subsequent Event [Member]	Jul. 31, 2014 Subsequent Event [Member]	Jul. 22, 2014 Subsequent Event [Member]	Aug. 01, 2014 Subsequent Event [Member] Deferral Incentives [Member]	Jul. 31, 2014 Subsequent Event [Member] Deferral Incentives [Member]	Jun. 30, 2014 Subsequent Event [Member] Deferral Incentives [Member]	Jun. 30, 2014 Subsequent Event [Member] Employees [Member]	Jul. 22, 2014 Subsequent Event [Member] 4% Convertible Promissory Note [Member]	Jul. 22, 2014 Subsequent Event [Member] 4% Convertible Promissory Note [Member]	Aug. 12, 2014 Subsequent Event [Member] Tranche One [Member]	Aug. 12, 2014 Subsequent Event [Member] Tranche Two [Member]	Aug. 12, 2014 Subsequent Event [Member] 4% Convertible Promissory Note [Member]	Jul. 22, 2014 Subsequent Event [Member] 4% Convertible Promissory Note [Member]	Jul. 22, 2014 Subsequent Event [Member] 4% Convertible Promissory Note [Member]
Subsequent Event [Line Items]
Accrued payroll and related	$ 1,497,000		$ 744,000	$ 983,000	$ 481,000	$ 514,000	$ 263,000					$ 1,497,000		$ 17,000	$ 877,000	$ 585,000	$ 292,000
Number of non-executive employees laid off									3
Commitment to purchase common stock										3,000,000
Common stock, par value	$ 0.0001		$ 0.0001										$ 0.0001
Commitment period											36 months
Equity investments amount													100,000
Minimum percentage of trading price of common stock										85.00%
Percentage of purchase commitment to be issued as commitment fee								2.50%
Percentage of commitment fee common stock issued in tranches																				50.00%	50.00%
Period for payment of commitment fee upon execution of agreement																					60 days
Promissory note amount	1,355,000		605,000																44,000
Promissory note maturity date																		Jul. 22, 2015
Percentage of conversion price of common stock																		50.00%
Number of trading days																		20 days
Number of tranches																						2
Interest rate on promissory notes	300.00%	200.00%	200.00%																					4.00%
Debt instrument repurchase, amount																								40,000
Debt instrument original discount																								4,000
Debt instrument interest rate accrual per annum																							20.00%
Liquidated damages per day																							$ 1,000
Percent of outstanding principal amount																							150.00%

GEOVIC MINING CORP. 10-Q