Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 62,149	$ 57,395
Accounts receivable	1,922	21,630
Income taxes receivable	2,136	2,134
Value-added tax receivable	2,343	10,490
Inventory	11,878	17,368
Restricted cash	0	1,250
Prepaid and other current assets	6,104	5,419
Total current assets	86,532	115,686
Property, equipment and construction in progress, net	165,971	217,753
Restricted cash	2,209	4,109
Other non-current assets	2,150	5,065
Investment in Ecuador property, net	501	534
Deferred tax asset	33,997	63,602
Total assets	291,360	406,749
Current liabilities:
Accounts payable	4,380	3,127
Accrued liabilities	6,524	11,246
Other liabilities	22,533	24,494
Accrued interest payable	4,883	5,119
Derivative financial instruments		30
Current maturity of long-term debt	214,312
Total current liabilities	252,632	44,016
Asset retirement obligation	5,330	1,564
Other non-current liabilities		16,755
Long-term debt, net		206,939
Total long-term liabilities	5,330	225,258
Commitments and contingencies (Note 22 and 23)
Stockholders’ equity:
Preferred stock, no par value, 25,000 authorized; none issued and outstanding	0	0
Common stock, no par value, 250,000 authorized; 118,657 and 117,526 shares issued and outstanding at December 31, 2014 and December 31, 2013, respectively	572,890	569,061
Accumulated deficit	(539,492)	(431,586)
Total stockholders’ equity	33,398	137,475
Total liabilities and stockholders’ equity	$ 291,360	$ 406,749