Debt (Tables)

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Long term debt and capital lease obligations

Long-term debt and capital lease obligations at March 31, 2014 and December 31, 2013 are as follows (in thousands):

	March 31, 2014				December 31, 2013
	Current		Non-Current		Current		Non-Current
3.25% Convertible Senior Notes due 2028	$	5,334	$	—	$	—	$	5,334
7.875% Senior Notes due 2021	—		452,964		—		300,000
Capital lease obligations	2,761		3,188		2,505		796
	$	8,095	$	456,152	$	2,505	$	306,130

Interest expenses incurred for various debt instruments

Interest expense is made up of the following (in thousands):

	Three months ended March 31,
	2014			2013
	(in thousands)
3.25% Convertible Senior Notes due 2028	$	43		$	337
7.875% Senior Notes due 2021	6,464			4,134
Revolving Credit Facility	179			125
Write off of revolver costs	3,035			—
Capital lease obligations	59			168
Other debt obligations	—			197
Accretion of Franco Nevada royalty obligation	3,196			4,062
Amortization of debt issuance costs	498			525
Accretion of debt (premium) discount	(36		)	577
Capitalized interest	(384		)	(393		)
Total interest expense, net of capitalized interest	$	13,054		$	9,732