Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 182	$ 214
Short-term investments	10,561	11,642
Investments in marketable equity securities, at fair value	1,906	2,643
Prepaid expenses and other	60	114
Total current assets	12,709	14,613
Mineral properties	15,657	15,657
Other assets	117	125
Total assets	28,483	30,395
Current liabilities:
Accounts payable	134	141
Long-term liabilities
Asset retirement obligation – Lik	125	125
Shareholders’ equity:
Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at September 30, 2018 and December 31, 2017)
Common stock, $0.01 par value, authorized 100,000,000 shares (58,261,366 and 58,434,566 shares, respectively, issued and outstanding at September 30, 2018 and December 31, 2017)	583	584
Additional paid-in capital	69,748	69,312
Accumulated deficit	(42,107)	(39,767)
Total shareholders’ equity	28,224	30,129
Total liabilities and shareholders’ equity	$ 28,483	$ 30,395

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6801-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.9)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765