SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
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6 Months Ended |
Nov. 30, 2015
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Nov. 30, 2014
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
3,185,815us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
1,530,447us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
Convertible bonds - Series A [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
17,500us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertibleBondsMember |
55,761us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertibleBondsMember |
Convertible bonds - Series B [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
89,062us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertibleBondsSeriesBMember |
83,312us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertibleBondsSeriesBMember |
Convertible promissory notes [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
895,159us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_ConvertibleNotesPayableMember |
57,202us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_ConvertibleNotesPayableMember |
Convertable preferred shares [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
216,191us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertablePreferredSharesMember |
0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = staf_ConvertablePreferredSharesMember |
Warrants [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
1,637,903us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember |
1,091,672us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember |
Options [Member] |
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Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
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Shares excluded in computation of earnings per common share |
330,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember |
242,500us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember |