Debt and Capital Lease Obligations (Table)

3 Months Ended

Mar. 31, 2013

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 March 31, 2013 and December 31, 2012 are as follows (in thousands):

	March 31, 2013				December 31, 2012
	Current		Non-Current		Current		Non-Current
3.25% Convertible Senior Notes due March 2028	$	—	$	5,334	$	48,081	$	—
7.875% Senior Notes due 2021	—		300,000		—		—
Capital lease obligations	6,130		2,457		7,902		3,460
	$	6,130	$	307,791	$	55,983	$	3,460

Interest expenses incurred for various debt instruments

For the three months ended March 31, 2013 and 2012, the Company expensed interest of $9.7 million and $6.7 million, respectively.

	Three months ended March 31,
	2013			2012
	(in thousands)
3.25% Convertible Senior Notes due March 2028	$	337		$	395
7.875% Senior Notes due January 2021	4,134			—
Revolving Credit Facility	125			—
Kensington Term Facility (terminated in 2012)	—			974
Capital lease obligations	168			343
Other debt obligations	197			69
Accretion of Franco Nevada royalty obligation	4,062			5,104
Amortization of debt issuance costs	525			256
Accretion of debt discount	577			612
Capitalized interest	(393		)	(1,083		)
Total interest expense, net of capitalized interest	$	9,732		$	6,670