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Note 3 - Stock-based Compensation (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized  
Allocated Share-based Compensation Expense $ 0.1us-gaap_AllocatedShareBasedCompensationExpense $ 0.1us-gaap_AllocatedShareBasedCompensationExpense
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 0.7us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized  
Employee Stock Option [Member] | The 2012 Stock Incentive Plan [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 20,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 431,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 3.82us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value 0.1us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 13,667us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Employee Stock Option [Member] | The 2012 Stock Incentive Plan [Member] | Maximum [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Employee Stock Option [Member] | The 2012 Stock Incentive Plan [Member] | Minimum [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year  
Performance Shares [Member]    
Share-based Compensation [Abstract]    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 0.4us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		  
Restricted Stock [Member] | The 2012 Stock Incentive Plan [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 42,233us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 8 years  
Restricted Stock Units (RSUs) [Member] | The 2012 Stock Incentive Plan [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 39,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 2,733us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value 0.8us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 5,466us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= scx_The2012StockIncentivePlanMember		  
Restricted Stock Units (RSUs) [Member] | The 2012 Stock Incentive Plan [Member] | Maximum [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Restricted Stock Units (RSUs) [Member] | The 2012 Stock Incentive Plan [Member] | Minimum [Member]    
Share-based Compensation [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year  
Expected to be Recognized [Member]    
Share-based Compensation [Abstract]    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 182 days  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 0.3us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= scx_ExpectedToBerecognizedMember