Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 97	$ 214
Short-term investments	11,223	11,642
Investments in marketable equity securities, at fair value	2,202	2,643
Prepaid expenses and other	93	114
Total current assets	13,615	14,613
Mineral properties	15,657	15,657
Other assets	127	125
Total assets	29,399	30,395
Current liabilities:
Accounts payable	165	141
Total current liabilities	165	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 March 31, 2018 and December 31, 2017)
Common stock, $0.01 par value, authorized 100,000,000 shares (58,381,952 and 58,434,566 shares, respectively, issued and outstanding at March 31, 2018 and December 31, 2017)	584	584
Additional paid-in capital	69,296	69,312
Accumulated deficit	(40,771)	(39,767)
Total shareholders’ equity	29,109	30,129
Total liabilities and shareholders’ equity	$ 29,399	$ 30,395

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

- Definition

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.