COMMITMENTS AND CONTINGENCIES (Details 2) (Pennsylvania Department of Environmental Protection (PaDEP), USD $)	Jun. 30, 2012	Dec. 15, 2010 well household	Nov. 30, 2009 household
Pennsylvania Department of Environmental Protection (PaDEP)
Environmental Matters
Modified Consent Order, number of households to be supplied potable water		14
Number of households to whom potable water was offered			14
Global Settlement Agreement, escrow for benefit of households		$ 4,200,000
Global Settlement Agreement, payments to reimburse PaDEP costs		500,000
Global Settlement Agreement, number of wells to remediate		2
Aggregate amount of fines and civil penalties paid to PaDEP	1,300,000
Aggregate amount of fines and civil penalties paid to affected households	2,300,000
Accrued settlement liability for unpaid escrow	$ 1,900,000