Summary of Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data [Abstract]

SUMMARY OF QUARTERLY FINANCIAL DATA (UNAUDITED)

UMMARY OF QUARTERLY FINANCIAL DATA (UNAUDITED)

The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2013 and 2012 (in thousands, except per share data):

	Q1		Q2			Q3			Q4
2013
Sales of metals	$	171,797	$	204,525		$	200,825		$	168,847
Net income (loss)	12,270		(35,040		)	(46,265		)	(581,528		)
Amortization	50,436		57,653			60,874			63,916
Production costs	88,784		142,924			131,728			100,227
Exploration expenses	6,841		6,774			3,305			5,440
Other operating expenses (general and administrative, pre-development, and write-downs)	14,831		48,131			20,195			789,094
Cash provided by operating activities	12,934		63,338			26,804			10,391
Capital expenditures	12,827		27,201			32,726			28,059
Basic net income (loss) per share	$	0.14	$	(0.35	)	$	(0.46	)	$	(5.77	)
Diluted net income (loss) per share	$	0.14	$	(0.35	)	$	(0.46	)	$	(5.77	)

	Q1		Q2		Q3			Q4
2012
Sales of metals	$	204,564	$	254,406	$	230,593		$	205,929
Net income (loss)	3,975		22,973		(15,821		)	37,550
Amortization	52,592		61,024		52,844			52,397
Production costs	92,542		131,182		124,365			106,473
Exploration expenses	6,567		6,305		6,957			6,441
Other operating expenses	8,664		13,680		11,836			5,883
Cash provided by operating activities	17,002		113,203		79,735			61,694
Capital expenditures	31,647		32,238		29,972			21,784
Basic net income (loss) per share	$	0.04	$	0.26	$	(0.18	)	$	0.42
Diluted net income (loss) per share	$	0.04	$	0.26	$	(0.18	)	$	0.42