CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 462	$ 605
Short-term investments, at fair value	5,087	5,798
Investments in marketable equity securities, at fair value	1,307	1,620
Prepaid expenses and other	303	26
Total current assets	7,159	8,049
Mineral properties	16,306	15,628
Other assets	154	124
Total assets	23,619	23,801
Current liabilities:
Accounts payable	239	157
Paycheck Protection Loan	0	10
Operating lease liability	37	7
Total current liabilities	276	174
Long-term liabilities
Asset retirement obligation - Lik	125	125
Operating lease liability	35	0
Total long-term liabilities	160	125
Shareholders' equity:
Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at December 31, 2021 and 2020)	0	0
Common stock, $0.01 par value, authorized, 100,000,000 shares (62,036,399 and 58,108,366, respectively, shares issued and outstanding at December 31, 2021 and 2020)	620	581
Additional paid-in capital	72,523	70,514
Accumulated deficit	(49,960)	(47,593)
Total shareholders' equity	23,183	23,502
Total liabilities and shareholders' equity	$ 23,619	$ 23,801

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).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.