Mining Properties (Tables)

6 Months Ended

Jun. 30, 2011

Mining Properties (Tables) [Abstract]

Mining Properties

				San
June 30, 2011	Palmarejo			Bartolomé			Kensington			Rochester			Martha			Endeavor			Other		Total
Operational mining properties:	$	131,261		$	66,710		$	319,306		$	103,441		$	10,714		$	—		$	—	$	631,432
Accumulated depletion		(37,054	)		(12,331	)		(19,343	)		(97,435	)		(9,996	)		—			—		(176,159	)
		94,207			54,379			299,963			6,006			718			—			—		455,273
Mineral interests		1,657,188			26,642			—			—			—			44,033			—		1,727,863
Accumulated depletion		(109,222	)		(4,946	)		—			—			—			(8,370	)		—		(122,538	)
		1,547,966			21,696			—			—			—			35,663			—		1,605,325
Non-producing and development properties		—			—			—			—			—			—			142		142
Total mining properties	$	1,642,173		$	76,075		$	299,963		$	6,006		$	718		$	35,663		$	142	$	2,060,740

				San
December 31, 2010	Palmarejo			Bartolomé			Kensington			Rochester			Martha			Endeavor			Other		Total
Operational mining properties:	$	128,734		$	66,655		$	317,156		$	99,720		$	10,096		$	—		$	—	$	622,361
Accumulated depletion		(22,655	)		(10,031	)		(9,092	)		(97,435	)		(9,998	)		—			—		(149,211	)
		106,079			56,624			308,064			2,285			98			—			—		473,150
Mineral interests		1,657,188			26,642			—			—			—			44,033			—		1,727,863
Accumulated depletion		(68,026	)		(4,027	)		—			—			—			(6,886	)		—		(78,939	)
		1,589,162			22,615			—			—			—			37,147			—		1,648,924
Non-producing and development properties		—			—			—			—			—			—			142		142
Total mining properties	$	1,695,241		$	79,239		$	308,064		$	2,285		$	98		$	37,147		$	142	$	2,122,216