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ACQUISITION OF LONGHE SHIP MANAGEMENT COMPANY (Details Textual) (USD $)
0 Months Ended 9 Months Ended 1 Months Ended 0 Months Ended
Aug. 08, 2014
Mar. 31, 2015
Apr. 30, 2015
Aug. 22, 2014
Sep. 08, 2014
Business Acquisition [Line Items]          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 50,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued        
Restricted Stock [Member]          
Business Acquisition [Line Items]          
Number Of Shares Issued From Escrow   30,000sino_NumberOfSharesIssuedFromEscrow
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
     
Restricted Stock [Member] | Subsequent Event [Member]          
Business Acquisition [Line Items]          
Number Of Shares Cancelled In Escrow     30,000sino_NumberOfSharesCancelledInEscrow
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Mr. Deming Wang [Member]          
Business Acquisition [Line Items]          
Equity Method Investment, Ownership Percentage 3.60%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
       
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares       50,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
 
Mr. Deming Wang [Member] | Restricted Stock [Member]          
Business Acquisition [Line Items]          
Number Of Shares Issued From Escrow   20,000sino_NumberOfSharesIssuedFromEscrow
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
     
Mr. Deming Wang [Member] | Restricted Stock [Member] | Subsequent Event [Member]          
Business Acquisition [Line Items]          
Number Of Shares Issued From Escrow     20,000sino_NumberOfSharesIssuedFromEscrow
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Maximum [Member] | Mr. Deming Wang [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
       
Minimum [Member] | Mr. Deming Wang [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 20,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sino_MrDemingWangMember
       
Longhe Ship Management Acquisition [Member]          
Business Acquisition [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets         $ 199,482us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net         26,655us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents         23,289us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables         47,409us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other         128,784us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable         24,054us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other         2,022us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accrued Expenses         $ 579sino_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Percentage Of Assets Accounted         2.60%sino_PercentageOfAssetsAccounted
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember
Percentage Of Liabilities Accounted         2.60%sino_PercentageOfLiabilitiesAccounted
/ us-gaap_BusinessAcquisitionAxis
= sino_LongheShipManagementAcquisitionMember