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Related Party Transactions (Details Textual) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2015
Apr. 30, 2014
Related Party Transactions (Textual)        
Income from IDT Corporation payments of liabilities    $ 332strp_IncomeFromPaymentsOfLiabilities    $ 383strp_IncomeFromPaymentsOfLiabilities
IDT[Member]        
Related Party Transactions (Textual)        
Income from IDT Corporation payments of liabilities   $ 332strp_IncomeFromPaymentsOfLiabilities
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= strp_IdtMember		   $ 383strp_IncomeFromPaymentsOfLiabilities
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= strp_IdtMember