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Shareholders' Equity and Share-based Payments (Details)		3 Months Ended		6 Months Ended
	Apr. 14, 2016 shares	Mar. 31, 2016 USD ($) shares	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) item shares	Mar. 31, 2015 USD ($)	Sep. 30, 2015 shares	Jan. 01, 2015 USD ($)	Oct. 01, 2014 USD ($)
Share-based compensation
Common stock, shares authorized | shares		75,000,000		75,000,000		75,000,000
Preferred Stock, shares authorized | shares		10,000,000		10,000,000		10,000,000
Share-based compensation expense		$ 13,000	$ 146,000	$ 68,000	$ 350,000
Income tax effect recognized as a charge to additional paid-in capital related to share-based compensation		$ 0	(5,000)	$ 0	(47,000)
Number of share-based compensation plans maintained by the company | item				3
Stock repurchase program
Maximum number of shares approved under repurchase program | shares	250,000
Period of time repurchase plan was authorized for beginning May 1, 2016	1 year
1998 Plan
Share-based compensation
Share-based compensation expense				$ 0	0
Number of shares of common stock reserved for awards | shares		3,389,000		3,389,000
1998 Plan | Independent contractors or consultants
Share-based compensation
Options granted | shares				0
2003 Plan
Share-based compensation
Share-based compensation expense				$ 0	0
Number of quarterly installments of shares awards | item				4
2003 Plan | Non-employee director
Share-based compensation
Fair market value of annual award of non-vested shares								$ 40,000
2009 Plan
Share-based compensation
Share-based compensation expense		$ 196,000	96,000	$ 251,000	350,000
Number of shares of common stock available for awards under the plan | shares		324,379		324,379
Number of shares of common stock reserved for awards | shares		1,200,000		1,200,000
2009 Plan | Non-employee director
Share-based compensation
Share-based compensation expense		$ 183,000	0	$ 183,000	150,000
Fair market value of annual award of non-vested shares							$ 40,000
2009 Plan | Employee
Share-based compensation
Share-based compensation expense		$ 13,000	$ 96,000	$ 68,000	$ 200,000
2009 Plan | Performance-based Award | Employee
Share-based compensation
Maximum award (in shares) | shares		300,000		300,000

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Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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