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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Series A Convertible Preferred Stock
Common Stock
Additional Paid in Capital
Accumulated Deficit
Non-controlling Interests
Total
Beginning Balance, Amount at Dec. 31, 2014 $ 0 $ 33 $ 59,395 $ (60,796) $ (55) $ (1,423)
Beginning Balance, Shares at Dec. 31, 2014 0 33,117,516        
Issuance of common stock for cash, Amount   $ 7 2,773     2,780
Issuance of common stock for cash, Shares   6,366,197        
Stock-based compensation expense, Amount     3,602     3,602
Stock-based compensation expense, Shares   390,000        
Issuance of common stock to Bridge Note holders for debt conversion, Amount     102     102
Issuance of common stock to Bridge Note holders for debt conversion, Shares   165,431        
Cashless exercise of options, Amount   $ 0       0
Cashless exercise of options, Shares   19,445        
Issuance of restricted common stock for services, Amount   $ 2 (2)     0
Issuance of restricted common stock for services, Shares   1,816,408        
Forfeiture of restricted stock, Amount   $ 0       0
Forfeiture of restricted stock, shares   (13,500)        
Issuance of common and preferred stock for oil and gas properties, Amount $ 0 $ 3 31,133     31,136
Issuance of common and preferred stock for oil and gas properties, Shares 66,625 3,375,000        
Fair value of warrants issued as debt discount     160     160
Net loss       (21,316) (4) (21,320)
Ending Balance, Amount at Dec. 31, 2015 $ 0 $ 45 97,163 (82,112) (59) 15,037
Ending Balance, Shares at Dec. 31, 2015 66,625 45,236,497        
Issuance of common stock for settlement of payables, Amount   $ 2 586     588
Issuance of common stock for settlement of payables, Shares   2,450,000        
Stock-based compensation expense, Amount   $ 1 1,475     1,476
Stock-based compensation expense, Shares   900,000        
Cashless exercise of options, Amount   $ 0        
Cashless exercise of options, Shares   81,290        
Issuance of restricted common stock for services, Amount   $ 7 (7)      
Issuance of restricted common stock for services, Shares   6,631,820        
Forfeiture of restricted stock, Amount   $ 0        
Forfeiture of restricted stock, shares   (45,000)        
Stock repurchase and retirement, Amount   $ 0 (74)      
Stock repurchase and retirement, shares   (323,490)        
Fair value of warrants issued as debt discount     (59)   (59)  
Net loss       (19,619)   (19,619)
Ending Balance, Amount at Dec. 31, 2016 $ 0 $ 55 $ 99,720 $ (101,731) $ 0 $ (1,956)
Ending Balance, Shares at Dec. 31, 2016 66,625 54,931,117