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Concentrations and Risks (Details)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Summary of company's sales account by customer    
Concentration risk percentage 10.00%us-gaap_ConcentrationRiskPercentage1 10.00%us-gaap_ConcentrationRiskPercentage1
Sales Revenue, Net [Member] | Customer A [Member]    
Summary of company's sales account by customer    
Concentration risk percentage    82.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= xing_CustomerOneMember
Sales Revenue, Net [Member] | Customer B [Member]    
Summary of company's sales account by customer    
Concentration risk percentage 41.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= xing_CustomerTwoMember