Acquisitions Radar (Details) - Radar Industries [Member]	3 Months Ended
Oct. 31, 2016 USD ($)
Business Acquisition [Line Items]
Escrow Deposits Disbursements, Funds Returned to Seller	$ 1,093,000
Business Combinations, Recognized Identifiable Assets Acquired And Liabilities Assumed, Cash In Escrow	$ 1,157,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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