STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIENCY) (USD $)
In Thousands, except Share data
Common Stock [Member]
Additional Paid-In Capital [Member]
Deferred Stock - based compensation [Member]
Deficit accumulated during the development stage [Member]
Total
Balance at Sep. 22, 2000 $ 0 $ 0 $ 0 $ 0 $ 0
Balance (in shares) at Sep. 22, 2000 0        
Stock issued on September 22, 2000 for cash at $0.00188 per share 1 16 0 0 17
Stock issued on September 22, 2000 for cash at $0.00188 per share (in shares) 8,500,000        
Stock issued on March 31, 2001 for cash at $0.0375 per share 0 [1] 60 0 0 60
Stock issued on March 31, 2001 for cash at $0.0375 per share (in shares) 1,600,000        
Contribution of capital 0 8 0 0 8
Net loss 0 0 0 (17) (17)
Balance at Mar. 31, 2001 1 84 0 (17) 68
Balance (in shares) at Mar. 31, 2001 10,100,000        
Contribution of capital 0 11 0 0 11
Net loss 0 0 0 (26) (26)
Balance at Mar. 31, 2002 1 95 0 (43) 53
Balance (in shares) at Mar. 31, 2002 10,100,000        
Contribution of capital 0 15 0 0 15
Net loss 0 0 0 (47) (47)
Balance at Mar. 31, 2003 1 110 0 (90) 21
Balance (in shares) at Mar. 31, 2003 10,100,000        
2-for-1 stock split 0 [1] 0 0 0 0
2-for-1 stock split (in shares) 10,100,000        
Stock issued on August 31, 2003 to purchase mineral option at $0.065 per share 0 [1] 6 0 0 6
Stock issued on August 31, 2003 to purchase mineral option at $0.065 per share (in shares) 100,000        
Stock cancelled during period value 0 [1] 0 [1] 0 0 0
Stock cancelled during period shares (in shares) (10,062,000)        
Contribution of capital 0 [1] 15 0 0 15
Net loss 0 0 0 (73) (73)
Balance at Mar. 31, 2004 1 131 0 (163) (31)
Balance (in shares) at Mar. 31, 2004 10,238,000        
Stock granted during period value share based compensation 0 [1] 17,506 0 0 17,506
Stock granted during period shares share based compensation (in shares) 2,025,000        
Stock-based compensation related to stock and options granted to directors and employees 0 5,979 (5,979) 0 0
Stock cancelled during period value 0 [1]   0 0 0
Stock cancelled during period shares (in shares) (1,800,000)        
Stock issued on June 24, 2004 for private placement at $0.01 per share, net of $25,000 issuance expenses 0 [1] 60 0 0 60
Stock issued on June 24, 2004 for private placement at $0.01 per share, net of $25,000 issuance expenses (in shares) 8,510,000        
Contribution of capital 0 7 0 0 7
Stock issued during period value for private placement 0 [1] 1,418 0 0 1,418
Stock issued during period value for private placement (in shares) 1,894,808        
Amortization of deferred stock-based compensation related to options and shares granted to employees and directors 0 0 584 0 584
Net loss 0 0 0 (18,840) (18,840)
Balance at Mar. 31, 2005 1 25,101 (5,395) (19,003) 704
Balance (in shares) at Mar. 31, 2005 20,867,808        
Stock granted during period value share based compensation 0 [1] 662 0 0 662
Stock granted during period shares share based compensation (in shares) 934,904        
Stock-based compensation related to stock and options granted to directors and employees 0 [1] 486 (486) 0 0
Stock-based compensation related to stock and options granted to directors and employees (in shares) 200,000        
Amortization of deferred stock-based compensation related to options and shares granted to employees and directors 0 51 1,123 0 1,174
Stock issued on May 12, 2005 for private placement at $0.80 per share 0 [1] 149 0 0 149
Stock issued on May 12, 2005 for private placement at $0.80 per share (in shares) 186,875        
Stock issued on July 27, 2005 for private placement at $0.60 per share 0 [1] 99 0 0 99
Stock issued on July 27, 2005 for private placement at $0.60 per share (in shares) 165,000        
Stock issued on September 30, 2005 for private placement at $0.80 per share 0 [1] 225 0 0 225
Stock issued on September 30, 2005 for private placement at $0.80 per share (in shares) 312,500        
Stock issued on December 7, 2005 for private placement at $0.80 per share 0 [1] 135 0 0 135
Stock issued on December 7, 2005 for private placement at $0.80 per share (in shares) 187,500        
Forfeiture of options granted to employees 0 (3,363) 3,363 0 0
Reclassification due to application of ASC 815-40-25 (formerly EITF 00-19) 0 (7,906)     (7,906)
Beneficial conversion feature related to convertible loans 0 164 0 0 164
Net loss 0 0 0 (3,317) (3,317)
Balance at Mar. 31, 2006 1 15,803 (1,395) (22,320) (7,911)
Balance (in shares) at Mar. 31, 2006 22,854,587        
Stock granted during period value share based compensation 0 453 0 0 453
Stock granted during period shares share based compensation (in shares) 1,147,225        
Stock-based compensation related to stock and options granted to directors and employees 0 [1] 1,168 0 0 1,168
Stock-based compensation related to stock and options granted to directors and employees (in shares) 200,000        
Reclassification due to application of ASC 815-40-25 (formerly EITF 00-19) 0 7,191 0 0 7,191
Beneficial conversion feature related to convertible loans 0 1,086 0 0 1,086
Elimination of deferred stock compensation due to implementation of ASC 718-10 (formerly SFAS 123(R)) 0 (1,395) 1,395 0 0
Warrants issued to convertible note holder 0 11 0 0 11
Warrants issued to loan holder 0 110 0 0 110
Net loss 0 0 0 (3,924) (3,924)
Balance at Dec. 31, 2006 1 24,427 0 (26,244) (1,816)
Balance (in shares) at Dec. 31, 2006 24,201,812        
Stock granted during period value share based compensation   1,446 0 0 1,446
Stock granted during period shares share based compensation (in shares) 544,095        
Stock-based compensation related to stock and options granted to directors and employees 0 [1] 1,232 0 0 1,232
Stock-based compensation related to stock and options granted to directors and employees (in shares) 200,000        
Exercise of warrants 0 [1] 214 0 0 214
Exercise of warrants (in shares) 3,832,621        
Stock issued during period value for private placement 1 1,999 0 0 2,000
Stock issued during period value for private placement (in shares) 11,500,000        
Beneficial conversion feature related to convertible loans 0 407 0 0 407
Warrants issued to convertible note holder 0 109 0 0 109
Conversion of convertible loans 0 [1] 224 0 0 224
Conversion of convertible loans (in shares) 725,881        
Net loss 0 0 0 (6,244) (6,244)
Balance at Dec. 31, 2007 2 30,058 0 (32,488) (2,428)
Balance (in shares) at Dec. 31, 2007 41,004,409        
Stock granted during period value share based compensation 0 33 0 0 33
Stock granted during period shares share based compensation (in shares) 90,000        
Stock-based compensation related to stock and options granted to directors and employees 0 731 0 0 731
Exercise of options 0 [1] 3 0 0 3
Exercise of options (in shares) 17,399        
Exercise of warrants 0 [1] 0 0 0 0
Exercise of warrants (in shares) 1,860,000        
Stock issued during period value for private placement 1 1,499 0 0 1,500
Stock issued during period value for private placement (in shares) 8,625,000        
Conversion of convertible loans 0 [1] 1,276 0 0 1,276
Conversion of convertible loans (in shares) 3,644,610        
Subscription of shares for private placement 0 281 0 0 281
Net loss 0 0 0 (3,472) (3,472)
Balance at Dec. 31, 2008 3 33,881 0 (35,960) (2,076)
Balance (in shares) at Dec. 31, 2008 55,241,418        
Stock granted during period value share based compensation 0 [1] 775 0   775
Stock granted during period shares share based compensation (in shares) 5,284,284        
Stock-based compensation related to stock and options granted to directors and employees 0 409 0   409
Exercise of warrants 0 [1] 0 0   0
Exercise of warrants (in shares) 3,366,783        
Stock issued during period value for private placement 1 0 0   1
Stock issued during period value for private placement (in shares) 9,916,667        
Conversion of convertible loans 0 [1] 200 0   200
Conversion of convertible loans (in shares) 2,500,000        
Subscription of shares for private placement 0 729 0   729
Net loss 0 0 0 (1,781) (1,781)
Balance at Dec. 31, 2009 4 35,994 0 (37,741) (1,743)
Balance (in shares) at Dec. 31, 2009 76,309,152        
Stock granted during period value share based compensation 0 [1] 96 0 0 96
Stock granted during period shares share based compensation (in shares) 443,333        
Stock-based compensation related to stock and options granted to directors and employees 0 [1] 388 0 0 388
Stock-based compensation related to stock and options granted to directors and employees (in shares) 466,667        
Conversion of convertible note 0 [1] 135 0 0 135
Conversion of convertible note (in shares) 402,385        
Exercise of options 0 [1] 77 0 0 77
Exercise of options (in shares) 1,540,885        
Exercise of warrants 0 [1] 11 0 0 11
Exercise of warrants (in shares) 3,929,446        
Issuance of shares on account of previously subscribed shares 0 [1] 0 0 0 0
Issuance of shares on account of previously subscribed shares (in shares) 2,000,001        
Stock issued during period value for private placement 1 1,750 0 0 1,751
Stock issued during period value for private placement (in shares) 7,250,000        
Conversion of convertible loans 0 [1] 189 0 0 189
Conversion of convertible loans (in shares) 1,016,109        
Issuance of shares for public offering   400     400
Issuance of shares for public offering (in shares) 2,475,000        
Conversion of trade payable to stock   201     201
Subscription of shares for private placement   455 0 0 455
Net loss       (2,419) (2,419)
Balance at Dec. 31, 2010 5 39,696 0 (40,160) (459)
Balance (in shares) at Dec. 31, 2010 95,832,978        
Stock granted during period value share based compensation 0 449 0 0 449
Stock granted during period shares share based compensation (in shares) 474,203        
Stock-based compensation related to stock and options granted to directors and employees 0 1,135 0 0 1,135
Stock-based compensation related to stock and options granted to directors and employees (in shares) 2,025,040        
Conversion of convertible note 0 140 0 0 140
Conversion of convertible note (in shares) 755,594        
Exercise of options 0 243 0 0 243
Exercise of options (in shares) 1,648,728        
Exercise of warrants 0 272 0 0 272
Exercise of warrants (in shares) 1,046,834        
Issuance of shares for private placement 1 3,601 0 0 3,602
Issuance of shares for private placement (in shares) 14,160,933        
Issuance of shares on account of previously subscribed shares 0 24 0 0 24
Issuance of shares on account of previously subscribed shares (in shares) 10,499,999        
Net loss 0 0 0 (3,918) (3,918)
Balance at Dec. 31, 2011 6 45,560 0 (44,078) 1,488
Balance (in shares) at Dec. 31, 2011 126,444,309        
Stock granted during period value share based compensation 0 195 0 0 195
Stock granted during period shares share based compensation (in shares) 794,423        
Stock-based compensation related to stock and options granted to directors and employees 0 560 0 0 560
Stock-based compensation related to stock and options granted to directors and employees (in shares) 885,000        
Exercise of options 0 [1] 137 0   137
Exercise of options (in shares) 1,182,606        
Exercise of warrants 0 [1] 9 0   9
Exercise of warrants (in shares) 959,729        
Issuance of shares for private placement 1 5,022   0 5,023
Issuance of shares for private placement (in shares) 19,818,968        
Net loss 0 0 0 (3,430) (3,430)
Balance at Dec. 31, 2012 7 51,483 0 (47,508) 3,982
Balance (in shares) at Dec. 31, 2012 150,085,035        
Stock granted during period value share based compensation 0 98 0 0 98
Stock granted during period shares share based compensation (in shares) 809,696        
Stock-based compensation related to stock and options granted to directors and employees 0 203 0 0 203
Exercise of options (in shares)         0
Issuance of shares for private placement 0 250 0 0 250
Issuance of shares for private placement (in shares) 833,334        
Conversion of convertible loans 0 30 0 0 30
Conversion of convertible loans (in shares) 126,111        
Net loss 0 0 0 (1,082) (1,082)
Balance at Mar. 31, 2013 $ 7 $ 52,064 $ 0 $ (48,590) $ 3,481
Balance (in shares) at Mar. 31, 2013 151,854,176        
[1] Represents an amount less than $1.