Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 13,490	$ 19,740
Receivables:
Accrued oil and gas sales	3,244	2,617
Joint interest and other receivables	13,294	2,013
VAT receivable	778	392
Inventory	241	242
Other current assets	179	293
Total current assets	31,226	25,297
Oil and gas properties (successful efforts method):
Proved	49,269	38,528
Unproved	4,091	3,320
Other property and equipment	9,627	8,853
Gross property and equipment	62,987	50,701
Less accumulated depreciation, depletion and amortization	(14,226)	(12,327)
Net property and equipment	48,761	38,374
Other assets:
Certificates of deposit	406	406
Loan fees	2,421	2,527
Total other assets	2,827	2,933
Total assets	82,814	66,604
Current liabilities:
Accounts payable	7,648	5,742
Accrued liabilities	1,728	1,343
Total current liabilities	9,376	7,085
Long-term liabilities:
Notes payable	0	35,000
Asset retirement obligation	736	682
Total long-term liabilities	736	35,682
Total liabilities	10,112	42,767
Stockholders' equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized as of June 30, 2011, and December 31, 2010; no shares outstanding	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized as of June 30, 2011, and December 31, 2010; 52,315,204 and 45,284,527 shares issued and outstanding as of June 30, 2011, and December 31, 2010, respectively	52	45
Additional paid-in capital	217,753	171,167
Cumulative translation adjustment	7,204	14,013
Accumulated deficit	(152,307)	(161,388)
Total stockholders' equity	72,702	23,837
Total liabilities and stockholders' equity	$ 82,814	$ 66,604