New Accounting Standards (Details) - Accounting Standards Update 2015-03 [Member] - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Long-term Debt, Current Maturities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	$ 84	$ 84
Accrued Liabilities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	125	125
Long-term Debt, Excluding Current Maturities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	$ 69	$ 110

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	debit
Period Type:	instant