Mining Properties

12 Months Ended

Dec. 31, 2020

Mining Properties [Abstract]

MINING PROPERTIES

MINING PROPERTIES

Mining properties consist of the following (in thousands):

December 31, 2020	Palmarejo		Rochester		Silvertip		Kensington		Wharf		Sterling		La Preciosa		Other		Total
Mine development	$	280,184	$	270,648	$	48,589	$	360,201	$	33,578	$	4,107	$	—	$	—	$	997,307
Accumulated amortization	(194,898)		(157,526)		(10,747)		(264,014)		(22,547)		(1,099)		—		—		(650,831)
	85,286		113,122		37,842		96,187		11,031		3,008		—		—		346,476
Mineral interests	629,303		18,541		105,736		—		48,062		95,499		49,085		—		946,226
Accumulated amortization	(518,866)		—		(24,828)		—		(32,217)		—		—		—		(575,911)
	110,437		18,541		80,908		—		15,845		95,499		49,085		—		370,315
Mining properties, net	$	195,723	$	131,663	$	118,750	$	96,187	$	26,876	$	98,507	$	49,085	$	—	$	716,790

December 31, 2019	Palmarejo		Rochester		Silvertip		Kensington		Wharf		Sterling		La Preciosa		Other		Total
Mine development	$	260,838	$	220,127	$	50,146	$	345,026	$	34,165	$	3,651	$	—	$	—	$	913,953
Accumulated amortization	(179,894)		(155,079)		(9,623)		(230,869)		(20,071)		(678)		—		—		(596,214)
	80,944		65,048		40,523		114,157		14,094		2,973		—		—		317,739
Mineral interests	629,303		18,541		105,736		—		45,837		95,499		49,085		5,171		949,172
Accumulated amortization	(501,039)		—		(24,147)		—		(29,051)		—		—		(719)		(554,956)
	128,264		18,541		81,589		—		16,786		95,499		49,085		4,452		394,216
Mining properties, net	$	209,208	$	83,589	$	122,112	$	114,157	$	30,880	$	98,472	$	49,085	$	4,452	$	711,955