Commitments and Contingencies - Other Long-Term Obligations (Details) - USD ($)	Jul. 31, 2016	Nov. 03, 2014
Jet Prep Ltd.
Commitments and Contingencies
Assumed contingent obligation	$ 1,138,000
International Medical Service S.r.l. \| Central bank of Italy
Commitments and Contingencies
Liabilities assumed	415,000	$ 843,000
Interest rate per annum (as a percent)		0.25%
International Medical Service S.r.l. \| Central bank of Italy \| Accrued expenses
Commitments and Contingencies
Liabilities assumed	165,000	$ 187,000
International Medical Service S.r.l. \| Central bank of Italy \| Other long-term liabilities
Commitments and Contingencies
Liabilities assumed	$ 250,000	$ 656,000

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- Definition

The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

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- Definition

Amount of liabilities assumed at the acquisition date.

+ References

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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