Cash dividends (Details) - USD ($)	9 Months Ended
Jul. 02, 2016	Apr. 15, 2016	Sep. 30, 2015
Preference share dividends [Abstract]
Preferred stock, outstanding (in shares)	449,011		452,124
Series A Convertible Preferred Stock, stated value (in dollars per share)	$ 0.10		$ 0.10
Series A Convertible Preferred Stock [Member]
Preference share dividends [Abstract]
Preferred stock, issued (in shares)	449,011
Preferred stock, outstanding (in shares)	449,011
Series A Convertible Preferred Stock, stated value (in dollars per share)	$ 24
Percentage of cumulative annual dividend, Series A Convertible Preferred Stock	4.00%
Semi annual dividend		$ 216,816
Dividend payable	Apr. 15, 2015
Next semi-annual dividend payable	Oct. 15, 2015

Date the declared dividend will be paid, in CCYY-MM-DD format.

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- Definition

The Semi annual dividend related to Series A Convertible Preferred Stock offering rights under the registration statement filed.

+ References

No definition available.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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