Note 1 - Summary of Significant Accounting Policies (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Prior Period Reclassification Adjustment (in Dollars)		$ 103
Research and Development Expense (in Dollars)	1,720	1,785
Finite-Lived Intangible Asset, Useful Life	6 years	7 years
Number of Years Defined Benefit Plans are Closed to Newly Hired Employees	2 years
Number of Years Supplementary Retirement Plans are Closed to Newly Hired Employees	2 years
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)	197	204
Share-based Compensation (in Dollars)	$ 92	$ 169
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Property, Plant and Equipment, Useful Life	3 years
Maintenance Contracts Estimated Period	3 months
Period over which Services are Delivered	60 days
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Property, Plant and Equipment, Useful Life	7 years
Maintenance Contracts Estimated Period	12 months
Period over which Services are Delivered	90 days