Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies

Schedule of non-cancellable operating lease commitments

	2016		2017		2018		2019		2020		Thereafter
El Quevar mining concessions (estimated)	$	114	$	114	$	114	$	114	$	114	$	—
Velardeña mining consessions (estimated)	$	40	$	40	$	40	$	40	$	40	$	—
Office space	$	283	$	287	$	292	$	268	$	—	$	—