Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 78,983	$ 83,540
Accounts receivable	5,423	24,523
Income taxes receivable	1,730
Value-added tax receivable	10,416	20,569
Inventory	17,597	19,851
Restricted cash	1,250	25,129
Prepaid and other current assets	6,609	5,734
Total current assets	122,008	179,346
Property, equipment and construction in progress, net	221,203	238,557
Restricted cash	4,109	47,670
Other non-current assets	5,305	5,983
Investment in Ecuador property, net	543	632
Deferred tax asset	63,708	55,242
Total assets	416,876	527,430
Current liabilities:
Accounts payable	5,661	21,978
Accrued liabilities	13,943	34,013
Other liabilities	20,588	21,792
Current income taxes payable		10,460
Accrued interest payable	669	5,234
Derivative financial instruments		2,984
Current maturity of long-term debt		24,046
Total current liabilities	40,861	120,507
Asset retirement obligation	2,882	2,708
Other non-current liabilities	20,755	20,755
Long-term debt, net	205,112	197,160
Total long-term liabilities	228,749	220,623
Commitments and contingencies (Note 19 and 20)
Stockholders’ equity:
Preferred stock, no par value, 25,000 authorized; none issued and outstanding	0	0
Common stock, no par value, 250,000 authorized; 117,820 and 116,932 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	568,886	560,175
Accumulated deficit	(421,620)	(373,875)
Total stockholders’ equity	147,266	186,300
Total liabilities and stockholders’ equity	$ 416,876	$ 527,430