CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 147 Months Ended 150 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Mar. 31, 2013
Cash flows from operating activities:            
Net loss $ (1,082) $ (872) $ (3,430) $ (3,918) $ (47,508) [1],[2] $ (48,590) [1],[2]
Less - loss for the period from discontinued operations 0 0 0 0 164 [1],[2] 164 [1],[2]
Adjustments to reconcile net loss to net cash used in operating activities:            
Depreciation and amortization of deferred charges 33 38 157 153 1,158 [2] 1,191 [2]
Severance pay, net (2) 1 5 (23) 17 [2] 15 [2]
Accrued interest on loans 0 0 0 3 451 [2] 451 [2]
Amortization of discount on short-term loans 0 0 0 0 1,864 [2] 1,864 [2]
Change in fair value of options and warrants 0 0 0 0 (795) [2] (795) [2]
Expenses related to shares and options granted to service providers 128 4 195 449 21,681 [2] 21,809 [2]
Stock-based compensation related to options granted to employees 203 177 560 1,135 7,381 [2] 7,584 [2]
Decrease (increase) in accounts receivable and prepaid expenses 128 (249) (407) 105 (788) [2] (660) [2]
Increase (decrease) in trade payables and convertible note (112) 81 114 (63) 831 [2] 719 [2]
Increase (decrease) in other accounts payable and accrued expenses 34 74 (110) (64) 1,287 [2] 1,321 [2]
Erosion of restricted cash 0 0 0 0 (6) [2] (6) [2]
Net cash used in continuing operating activities (670) (746) (2,916) (2,223) (14,263) [2] (14,933) [2]
Net cash used in discontinued operating activities 0 0 0 0 (23) [2] (23) [2]
Total net cash used in operating activities (670) (746) (2,916) (2,223) (14,286) [2] (14,956) [2]
Cash flows from investing activities:            
Purchase of property and equipment (20) (52) (90) (48) (1,223) [2] (1,243) [2]
Restricted cash 0 0 0 0 6 [2] 6 [2]
Investment in short-term deposit 997 0 (2,769) 0 (2,769) [2] (1,772) [2]
Investment in lease deposit (6) 0 0 (16) (17) [2] (23) [2]
Net cash used in continuing investing activities 971 (52) (2,859) (64) (4,003) [2] (3,032) [2]
Net cash used in discontinued investing activities 0 0 0 0 (16) [2] (16) [2]
Total net cash used in (provided by) investing activities 971 (52) (2,859) (64) (4,019) [2] (3,048) [2]
Cash flows from financing activities:            
Proceeds from issuance of Common stock, net 250 0 5,023 3,602 17,342 [2] 17,592 [2]
Proceeds from loans, notes and issuance of warrants, net 0 0   0 2,061 [2] 2,061 [2]
Credit from bank     0 0 0 [2]  
Proceeds from exercise of warrants and options 0 20 146 515 777 [2] 777 [2]
Repayment of short-term loans 0 0 0 0 (601) [2] (601) [2]
Net cash provided by continuing financing activities 250 20 5,169 4,117 19,579 [2] 19,829 [2]
Net cash provided by discontinued financing activities 0 0 0 0 43 [2] 43 [2]
Total net cash provided by financing activities 250 20 5,169 4,117 19,622 [2] 19,872 [2]
Increase in cash and cash equivalents 551 (778) (606) 1,830 1,317 [2] 1,868 [2]
Cash and cash equivalents at the beginning of the period 1,317 [2] 1,923 1,923 93 0 [2] 0 [2]
Cash and cash equivalents at end of the period 1,868 [2] 1,145 1,317 [2] 1,923 1,317 [2] 1,868 [2]
Non-cash financing activities:            
Conversion of convertible loan and convertible note to shares Conversion of trade payable to Common Stock $ 84     0 140 0 [2]  
Conversion of other accounts payable to Common Stock     0 (24) 0 [2]  
Conversion of a trade payable to Common Stock     $ 0 $ 0 $ 0 [2]  
[1] Out of which, $163, relating to the period from inception to March 31 2004, is unaudited.
[2] Out of the which, cash flows used in discontinued operating activities of $36, cash flows used in discontinued investing activities of $16 and cash flows provided in discontinued financing activities of $57, relating to the period from inception to March 31, 2004, is unaudited.