Debt, Capital Leases and Royalty Obligation (Table)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Long term debt and capital lease obligations

The current and non-current portions of long-term debt and capital lease obligations as of December 31, 2012 and December 31, 2011 are as follows (in thousands):

	December 31, 2012				December 31, 2011
	Current		Non-Current		Current		Non-Current
3.25% Convertible Senior Notes due March 2028	$	48,081	$	—	$	—	$	45,545
Kensington Term Facility	—		—		15,398		60,425
Capital lease obligations	7,902		3,460		17,119		9,891
Other	—		—		85		—
	$	55,983	$	3,460	$	32,602	$	115,861

Interest expenses incurred for various debt instruments

	Years Ended December 31,
	2012			2011			2010
	(in thousands)
3.25% Convertible Senior Notes due March 2028	$	1,581		$	1,581		$	2,394
1.25% Convertible Senior Notes due January 2024 (terminated in 2011)	—			1			28
Senior Term Notes (terminated in 2011)	—			1,381			5,074
Kensington Term Facility (terminated in 2012)	2,339			4,383			2,017
Gold Lease Facility (terminated in 2011)	—			—			677
Capital lease obligations	997			1,620			2,122
Other debt obligations	1,094			1,379			1,423
Accretion of Franco Nevada royalty obligation	19,139			22,230			20,502
Amortization of debt issuance costs	1,146			2,050			4,047
Accretion of debt discount	2,536			2,324			2,543
Capitalized interest	(2,663		)	(2,175		)	(9,885		)
Total interest expense, net of capitalized interest	$	26,169		$	34,774		$	30,942