CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 29,544	$ 25,405
Gold and silver rounds/bullion	559	671
Accounts receivable, net	4,947	4,226
Inventories, net	10,876	9,995
Prepaid expenses and other current assets	2,999	2,576
Total current assets	48,925	42,873
Property, plant and mine development, net	66,317	62,511
Deferred tax assets, net	434	309
Other non-current assets	505	41
Total assets	116,181	105,734
Current liabilities:
Accounts payable	8,988	8,782
Income taxes payable, net	3,215	73
Mining royalty taxes payable, net	1,861	955
Accrued expenses and other current liabilities	3,888	2,275
Total current liabilities	17,952	12,085
Reclamation and remediation liabilities	3,121	3,098
Other non-current liabilities	901	13
Total liabilities	21,974	15,196
Shareholders' equity:
Common stock - $0.001 par value, 200,000,000 shares authorized:74,581,679 and 74,376,958 shares outstanding at September 30, 2021 and December 31, 2020, respectively	75	75
Additional paid-in capital	85,429	84,865
Retained earnings	15,758	12,653
Treasury stock at cost, 336,398 shares	(5,884)	(5,884)
Accumulated other comprehensive loss	(1,171)	(1,171)
Total shareholders' equity	94,207	90,538
Total liabilities and shareholders' equity	$ 116,181	$ 105,734

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).