v2.4.1.9
EQUITY TRANSACTIONS (Details Textual) (USD $)
 0 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Aug. 08, 2014
Jun. 27, 2014
Jun. 30, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 06, 2014
Aug. 29, 2014
Apr. 10, 2015
May 05, 2015
Aug. 22, 2014
Apr. 30, 2015
Class of Stock [Line Items]                      
Stock Issued During Period, Shares, Issued for Services     200,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices                
Common Stock, Par or Stated Value Per Share     $ 2.34us-gaap_CommonStockParOrStatedValuePerShare                
Stock Issued During Period, Shares, New Issues   572,000us-gaap_StockIssuedDuringPeriodSharesNewIssues                  
Share Price   $ 1.76us-gaap_SharePrice                  
Purchase Period Of Common Stock   30 days                  
Additional Shares Of Common Stock Purchase Allotments   85,800sino_AdditionalSharesOfCommonStockPurchaseAllotments                  
Additional Shares Of Common Stock Purchased   75,000sino_AdditionalSharesOfCommonStockPurchased                  
Issuance Of Common Stock Sold Shares   647,000sino_IssuanceOfCommonStockSoldShares                  
Proceeds from Issuance of Common Stock   $ 1,000,000us-gaap_ProceedsFromIssuanceOfCommonStock   $ 967,820us-gaap_ProceedsFromIssuanceOfCommonStock $ 0us-gaap_ProceedsFromIssuanceOfCommonStock            
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 50,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued                    
Restricted Stock [Member]                      
Class of Stock [Line Items]                      
Number Of Shares Issued From Escrow       30,000sino_NumberOfSharesIssuedFromEscrow
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		              
Director [Member]                      
Class of Stock [Line Items]                      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares           600,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember		          
Consultants [Member]                      
Class of Stock [Line Items]                      
Stock Issued During Period, Shares, Issued for Services             400,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_TitleOfIndividualAxis
= sino_ConsultantsMember		        
Common Stock, Par or Stated Value Per Share             $ 1.68us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_TitleOfIndividualAxis
= sino_ConsultantsMember		        
Vessel Seller [Member]                      
Class of Stock [Line Items]                      
Business Combination, Consideration Transferred               10,500,000us-gaap_BusinessCombinationConsiderationTransferred1
/ dei_LegalEntityAxis
= sino_VesselSellerMember		      
Vessel Seller [Member] | Subsequent Event [Member]                      
Class of Stock [Line Items]                      
Stock Issued During Period, Shares, Issued for Services                 500,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ dei_LegalEntityAxis
= sino_VesselSellerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		    
Stock Issued During Period, Shares, Acquisitions               1,200,000us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ dei_LegalEntityAxis
= sino_VesselSellerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		      
Stock Issued During Period, Value, Acquisitions               2,220,000us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ dei_LegalEntityAxis
= sino_VesselSellerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		      
Business Combination, Consideration Transferred               $ 10,500,000us-gaap_BusinessCombinationConsiderationTransferred1
/ dei_LegalEntityAxis
= sino_VesselSellerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		      
Business Acquisition, Share Price               $ 1.85us-gaap_BusinessAcquisitionSharePrice
/ dei_LegalEntityAxis
= sino_VesselSellerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		      
Mr. Deming Wang [Member]                      
Class of Stock [Line Items]                      
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]                      
Class of Stock [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]                      
Class of Stock [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
Mr. Deming Wang [Member] | Minimum [Member]                      
Class of Stock [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		                    
Mr. Deming Wang [Member] | Maximum [Member]                      
Class of Stock [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