Condensed consolidated statements of cash flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net loss	$ (6,412)us-gaap_NetIncomeLoss	$ (4,228)us-gaap_NetIncomeLoss
Non-cash items and reclassifications:
Financing costs		320us-gaap_AmortizationOfFinancingCosts
Fees and penalty on bank loan repayment		100aqxp_FeeAndPenaltyOnBankLoanRepayment
Amortization and extinguishment of remaining discount on preferred stock upon conversion of preferred stock		1,884
Change in fair value of derivative liabilities	7	(914)
Stock-based compensation	266us-gaap_ShareBasedCompensation	138us-gaap_ShareBasedCompensation
Foreign exchange loss and others	13	125
Changes in operating assets and liabilities:
Accounts and other amounts receivable	8	(39)
Prepayments and deposits	(406)	(454)
Accounts payable and accrued liabilities	(231)	(735)
Cash used in operating activities	(6,755)	(3,803)
Investing activities
Proceeds from maturity of investments	6,066
Purchase of property and equipment	(6)	(4)
Cash provided by (used in) investing activities	6,060	(4)
Financing activities
Bank loan repayment, fees and penalty		(2,600)us-gaap_RepaymentsOfDebt
Proceeds from exercise of stock options	72
Initial public offering of common shares		53,130
Initial public offering costs		(4,811)us-gaap_PaymentsOfStockIssuanceCosts
Cash provided by financing activities	72	45,719
Net (decrease) increase in cash and cash equivalents during the period	(623)	41,912
Cash and cash equivalents, beginning of period	14,906	11,006
Cash and cash equivalents, end of period	14,283	52,918
Supplemental disclosure of cash flow information:
Interest paid		32us-gaap_InterestPaid
Interest received	15us-gaap_ProceedsFromInterestReceived	3us-gaap_ProceedsFromInterestReceived
Non-cash financing activities:
Accrued offering costs		$ 390

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Accrued share issuance costs.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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