Deposits	12 Months Ended
Dec. 31, 2012
Deposits [Abstract]
Deposits	Deposits The Company had $26.8 million and $23.3 million in deposits reported as non-current assets at December 31, 2012 and 2011, respectively. The deposits at December 31, 2012 consisted of $20.6 million under an escrow arrangement for the Company’s facilities agreement with Kern River Gas Transmission Company ("Kern River"), $1.5 million related to the Company’s construction insurance program, and $4.7 million comprised primarily of collateral placed against the surety bonds issued to California state and regional agencies for the closure and reclamation obligations at the Molycorp Mountain Pass facility. The collateral placed against these surety bonds increased by $3.5 million from the prior year.

Deposits

The Company had $26.8 million and $23.3 million in deposits reported as non-current assets at December 31, 2012 and 2011, respectively. The deposits at December 31, 2012 consisted of $20.6 million under an escrow arrangement for the Company’s facilities agreement with Kern River Gas Transmission Company ("Kern River"), $1.5 million related to the Company’s construction insurance program, and $4.7 million comprised primarily of collateral placed against the surety bonds issued to California state and regional agencies for the closure and reclamation obligations at the Molycorp Mountain Pass facility. The collateral placed against these surety bonds increased by $3.5 million from the prior year.