Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 26,645	$ 22,390
Gold and silver rounds/bullion	3,664	3,812
Accounts receivable	1,727	2,884
Inventories, net	12,542	11,636
Prepaid expenses and other current assets	1,661	1,767
Total current assets	46,239	42,489
Property, plant and mine development, net	91,124	82,599
Deferred tax assets, net	7,951	6,854
Other non-current assets	835	981
Total assets	146,149	132,923
Current liabilities:
Accounts payable	11,798	6,904
Loan payable, current	581	568
Capital lease, current	393	382
Income taxes payable, net	1,179	1,944
Mining royalty taxes payable, net	1,554	2,359
Accrued expenses and other current liabilities	3,018	2,851
Total current liabilities	18,523	15,008
Reclamation and remediation liabilities	2,961	2,946
Loan payable, long-term	1,351	1,645
Capital lease, long-term	1,019	1,218
Total liabilities	23,854	20,817
Shareholders' equity:
Common stock - $0.001 par value, 100,000,000 shares authorized: 57,592,052 and 56,916,484 shares outstanding at June 30, 2018 and December 31, 2017, respectively	58	57
Additional paid-in capital	116,135	114,584
Retained earnings	13,157	4,520
Treasury stock at cost, 336,398 shares	(5,884)	(5,884)
Accumulated other comprehensive loss	(1,171)	(1,171)
Total shareholders' equity	122,295	112,106
Total liabilities and shareholders' equity	$ 146,149	$ 132,923

Mining Royalty Taxes Payable

No definition available.

Name:	goro_MiningRoyaltyTaxesPayable
Namespace Prefix:	goro_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).