Contingency - Additional Information (Detail) (USD $)	6 Months Ended
Jun. 30, 2012	May 22, 2012
Loss Contingencies [Line Items]
Amount demanded by Redcor for non-payment of balance of a drilling invoice that is under dispute	$ 241,477
Interest rate on amount demanded by Redcor for non-payment of balance of a drilling invoice that is under dispute	4.00%
Amount of consideration agreed to dismiss a claim		$ 181,389

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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