Long-Term Reclamation Liability and Retirement Obligation Asset (Tables)

12 Months Ended

Dec. 31, 2016

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Other Noncurrent Liabilities

Following is a reconciliation of the aggregate retirement liability associated with our reclamation plan for the mining projects for the years ended December 31, 2016, 2015 and 2014:

	2016		2015		2014
Long-term reclamation liability — beginning of period	$	6,827,568	$	5,908,700	$	5,424,410
Additional obligations incurred	340,000		659,295		140,573
Accretion of reclamation liability	185,778		259,573		343,717
Long-term reclamation liability — end of period	$	7,353,346	$	6,827,568	$	5,908,700

Schedule of Asset Retirement Obligations

Following is a reconciliation of the aggregate retirement obligation asset associated with our mining projects for the years ended December 31, 2016, 2015, and 2014:

	2016			2015			2014
Retirement obligation asset — beginning of period	$	1,107,120		$	1,619,101		$	2,491,956
Additional obligations incurred	340,000			659,295			140,573
Amortization of retirement obligation asset	(829,994		)	(1,171,276		)	(1,013,428		)
Retirement obligation asset — end of period	$	617,126		$	1,107,120		$	1,619,101