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Statement of Changes in Redeemable Convertible Preferred Shares and Shareholders' Deficit (Unaudited) (USD $) In Thousands, except Share data	Series A Preferred Stock [Member] Preferred Stock [Member]	Series B Preferred Stock [Member] Preferred Stock [Member]	Series E Preferred Stock [Member] Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance as of December 31, 2012 at Dec. 31, 2012	$ 2,939us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 8,683us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 90,866us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 6,008us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	$ 29,164us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember	$ (128,784)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember	$ 3,747us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember	$ (89,865)us-gaap_StockholdersEquity
Balance as of December 31, 2012 (in Shares) at Dec. 31, 2012	1,151,468us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	994,885us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	4,322,126us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	1,330,696us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Net income						12,032us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember		12,032us-gaap_NetIncomeLoss
Cumulative translation adjustment							(1,236)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember	(1,236)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Stock option compensation expense					575us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember			575us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition
Subscription rights					73xene_AdjustmentsToAdditionalPaidInCapitalSubscriptionRights / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember			73xene_AdjustmentsToAdditionalPaidInCapitalSubscriptionRights
Issuance of common shares on conversion of subscription rights				45us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	(45)us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Issuance of common shares on conversion of subscription rights (in Shares)				5,602us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Issued pursuant to exercise of stock options				94us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	(45)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember			49us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Issued pursuant to exercise of stock options (in Shares)				8,329us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Balance at Dec. 31, 2013	2,939us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	8,683us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	90,866us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	6,147us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	29,722us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember	(116,752)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember	2,511us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember	(78,372)us-gaap_StockholdersEquity
Balance (in Shares) at Dec. 31, 2013	1,151,468us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	994,885us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	4,322,126us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	1,344,627us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Net income						11,794us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember		11,794us-gaap_NetIncomeLoss
Cumulative translation adjustment							(1,502)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember	(1,502)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Stock option compensation expense					561us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember			561us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition
Issuance of common shares on conversion of subscription rights				32us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	(32)us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Issuance of common shares on conversion of subscription rights (in Shares)				3,164us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Issued pursuant to exercise of stock options				19us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	(9)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember			10us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Issued pursuant to exercise of stock options (in Shares)				1,800us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember				1,800us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Balance at Sep. 30, 2014	$ 2,939us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 8,683us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 90,866us-gaap_StockholdersEquity / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	$ 6,198us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	$ 30,242us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember	$ (104,958)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember	$ 1,009us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember	$ (67,509)us-gaap_StockholdersEquity
Balance (in Shares) at Sep. 30, 2014	1,151,468us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	994,885us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	4,322,126us-gaap_SharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember	1,349,591us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember

X

- Definition

This element represents the amount of recognized equity-based compensation related to stock options during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized).

+ References

No definition available.

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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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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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- Definition

Number of shares issued which are neither cancelled nor held in the treasury.

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No definition available.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

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Number of share options (or share units) exercised during the current period.

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Value of stock issued as a result of the exercise of stock options.

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Amount of Increase in additional paid in capital resulting from recognition of subscription rights.

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