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Contingency [Axis] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Domain] Loss Contingency, Nature [Domain] Loss On Contract Termination Maximum penalty if the company is not successful in obtaining NDA approval for AMR101 Maturity Period Used to Classify Investments Maturity Period Used To Classify Investments Short term highly liquid instruments, maturity date Maximum [Member] Maximum Minimum [Member] Minimum Net Cash Provided By Used In Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided By Used In Operating Activities Net cash used in operating activities Net Cash Provided By Used In Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Income Loss Income (loss) for the period Net (loss) income Net (loss) income Notes Payable Other Payables [Member] 3.5% exchangeable senior notes due 2032 Notes to Financial Statements [Abstract] Notes To Financial Statements [Abstract] Notes to Financial Statements [Abstract] Number of Agreements Number Of Agreements Number of signed agreements Number of Warrants Exercised Number Of Warrants Exercised Warrants exercised, number of warrants October 2009 Private Placement [Member] October 2009 Private Placement [Member] October 2009 Private Placement Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating Expenses: Operating Income Loss Operating loss Ordinary Shares [Member] Ordinary Shares [Member] Ordinary Shares Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation 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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Restricted stock units granted Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vesting Date Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vesting Date Restricted stock units, expiration date Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Share Based Compensation Option And Incentive Plans Policy Stock-Based Compensation Shares Outstanding Ending Balance (in shares) Beginning Balance (in shares) Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Table] Significant Accounting Policies 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Stock Issued During Period Value Stock Warrants Exercised Warrants exercised Subsidiary Sale Of Stock [Axis] Subsidiary, Sale of Stock [Axis] Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Trading Symbol Trading Symbol Treasury Stock [Member] Treasury Shares Treasury Stock Shares Treasury stock, shares Treasury Stock Value Treasury stock; 20,079 shares at March 31, 2012 and December 31, 2011 Unrealized Gain Loss On Derivatives Gain on change in fair value of derivative liability Loss (Gain) on change in fair value of derivative liability (Gain) loss on change in fair value of derivative liability (Loss) gain on change in fair value of derivative liability Loss (gain) on change in fair value of derivative liability Up On First Marketing Approval of AMR101 [Member] Up On First Marketing Approval Of A M R 101 [Member] Up On First Marketing Approval of AMR101 Warrant 1 [Member] Warrant 1 [Member] Warrant issued on 4/27/07 Warrant 2 [Member] Warrant 2 [Member] Warrant issued on 6/1/07 Warrant 3 [Member] Warrant 3 [Member] Warrant issued on 12/5/07 Warrant 4 [Member] Warrant 4 [Member] Warrant issued on 7/31/09 Warrant 5 [Member] Warrant 5 [Member] Warrant issued on 7/31/09 Warrant 6 [Member] Warrant 6 [Member] Warrant issued on 10/16/09 Warrant 7 [Member] Warrant 7 [Member] Warrant issued on 10/16/09 Warrant Derivative Liability Fair Value Disclosure Significant Assumptions Warrant Derivative Liability Fair Value Disclosure Significant Assumptions Increase (decrease) in the fair value of the warrant derivative liability Warrant Issued to Employees [Member] Warrant Issued To Employees [Member] Warrant Issued to Employees Warrant [Member] Warrant Warrants Issued October 2009 [Member] Warrants Issued October 2009 [Member] Warrants Issued October 2009 Weighted Average Number Basic And Diluted, Shares Outstanding [Abstract] Weighted Average Number Basic And Diluted Shares Outstanding [Abstract] Weighted average shares: Weighted Average Number Of Diluted Shares Outstanding Diluted Diluted weighted average shares outstanding Weighted Average Number Of Shares Outstanding Basic Basic Weighted average shares outstanding