XML 18 R28.htm IDEA: XBRL DOCUMENT

ASSET RETIREMENT OBLIGATIONS (Details) (USD $)	3 Months Ended		9 Months Ended
ASSET RETIREMENT OBLIGATIONS (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Change in the balance of the restoration and reclamation liability
Reserve for future restoration and reclamation costs beginning of period			$ 4,735,759
Additions and changes in cash flow estimates			894,057
Costs incurred			(1,299,804)
Accretion expense	22,673	26,543	69,416	95,562
Reserve for future restoration and reclamation costs at end of period	$ 4,399,428		$ 4,399,428

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References+ Details

- Definition

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References+ Details