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Other Events (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Dec. 08, 2016	Nov. 01, 2016	Jan. 31, 2017	Jan. 31, 2016
Dividend payment	$ 0.90
Dividend aggregate amount to shareholders	$ 15,700		$ 15,696	$ 13,907
Riverside Property
Property
Purchase price		$ 19,400

X

- Definition

Represents the purchase price of real estate property.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Namespace Prefix:	us-gaap_
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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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