Annual report pursuant to Section 13 and 15(d)

Credit Facility (Details)

v2.4.1.9
Credit Facility (Details) (Credit Facility, USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
Jan. 04, 2013
Credit Facility    
Maximum borrowing capacity   10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Number of payments   1wstg_LineOfCreditFacilityNumberOfPayments
Total liabilities to tangible net worth ratio, maximum   2.50wstg_DebtInstrumentCovenantTermsTotalLiabilitiesToTangibleNetWorthRatioMaximum
Interest coverage ratio, minimum   2.00wstg_DebtInstrumentCovenantTermsInterestCoverageRatioMinimum
Borrowings outstanding 0us-gaap_LineOfCredit  
Interest expense $ 10,000us-gaap_InterestExpense  
Index
   
Credit Facility    
Variable interest rate base   LIBOR
Interest rate margin (as a percent)   1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember