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COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Commitments And Contingencies [Line Items]
Contract term related to drilling rigs	Up to three years
Commitments for contracted drilling services	$ 53.9
Natural gas transportation agreements	Through July 2019
Maximum commitments under natural gas transportation agreements	$ 19.9

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- Definition

Commitments for contracted drilling services.

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- Definition

Contract term related to drilling services.

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- Definition

Maximum commitments under natural gas transportation agreements.

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- Definition

Natural gas transportation agreement term.

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