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ACQUISITION OF LONGHE SHIP MANAGEMENT COMPANY (Details) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Business Acquisition [Line Items]          
Revenue $ 2,526,762us-gaap_Revenues $ 2,092,525us-gaap_Revenues $ 8,225,267us-gaap_Revenues $ 7,882,374us-gaap_Revenues  
Cost of revenues 1,220,577us-gaap_CostOfRevenue 948,514us-gaap_CostOfRevenue 4,304,591us-gaap_CostOfRevenue 5,077,085us-gaap_CostOfRevenue  
Gross profit 1,306,185us-gaap_GrossProfit 1,144,011us-gaap_GrossProfit 3,920,676us-gaap_GrossProfit 2,805,289us-gaap_GrossProfit  
Net income 331,913us-gaap_ProfitLoss 86,399us-gaap_ProfitLoss 573,154us-gaap_ProfitLoss 198,137us-gaap_ProfitLoss  
Total assets 8,101,731us-gaap_Assets 4,518,347us-gaap_Assets 8,101,731us-gaap_Assets 4,518,347us-gaap_Assets 5,713,954us-gaap_Assets
Total liabilities 1,194,378us-gaap_Liabilities   1,194,378us-gaap_Liabilities   1,230,795us-gaap_Liabilities
Parent Company [Member]          
Business Acquisition [Line Items]          
Revenue 2,526,762us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,092,525us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
8,035,192us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
7,882,374us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cost of revenues 1,220,577us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
948,514us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,401,029us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
5,077,085us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Gross profit 1,306,185us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,144,011us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,634,163us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,805,289us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net income 331,976us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
86,399us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
480,450us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
198,137us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Total assets 8,006,930us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,518,347us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
8,006,930us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,518,347us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Total liabilities 1,192,289us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,169,160us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,192,289us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,169,160us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Longhe Ship Management Acquisition [Member]          
Business Acquisition [Line Items]          
Revenue 0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
285,024us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Cost of revenues 0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
144,612us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Gross profit 0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
140,412us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Net income (63)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
136,807us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Total assets 267,880us-gaap_Assets
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Assets
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
267,880us-gaap_Assets
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Assets
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Total liabilities 2,089us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
2,089us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_LongheShipManagementAcquisitionMember
 
Elimination [Member]          
Business Acquisition [Line Items]          
Revenue 0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Cost of revenues 0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Gross profit 0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Net income 0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Total assets (173,079)us-gaap_Assets
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Assets
/ dei_LegalEntityAxis
= sino_EliminationMember
(173,079)us-gaap_Assets
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Assets
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Total liabilities 0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_EliminationMember
0us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_EliminationMember
 
Combined [Member]          
Business Acquisition [Line Items]          
Revenue 2,526,762us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_CombinedMember
2,092,525us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_CombinedMember
8,320,216us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_CombinedMember
7,882,374us-gaap_Revenues
/ dei_LegalEntityAxis
= sino_CombinedMember
 
Cost of revenues 1,220,577us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_CombinedMember
948,514us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_CombinedMember
4,545,641us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_CombinedMember
5,077,085us-gaap_CostOfRevenue
/ dei_LegalEntityAxis
= sino_CombinedMember
 
Gross profit 1,306,185us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_CombinedMember
1,144,011us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_CombinedMember
3,774,575us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_CombinedMember
2,805,289us-gaap_GrossProfit
/ dei_LegalEntityAxis
= sino_CombinedMember
 
Net income 331,913us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_CombinedMember
86,399us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_CombinedMember
617,257us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_CombinedMember
198,137us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= sino_CombinedMember
 
Total assets 8,101,731us-gaap_Assets
/ dei_LegalEntityAxis
= sino_CombinedMember
4,518,347us-gaap_Assets
/ dei_LegalEntityAxis
= sino_CombinedMember
8,101,731us-gaap_Assets
/ dei_LegalEntityAxis
= sino_CombinedMember
4,518,347us-gaap_Assets
/ dei_LegalEntityAxis
= sino_CombinedMember
 
Total liabilities $ 1,194,378us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_CombinedMember
$ 1,169,160us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_CombinedMember
$ 1,194,378us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_CombinedMember
$ 1,169,160us-gaap_Liabilities
/ dei_LegalEntityAxis
= sino_CombinedMember