Note 3 - Restructuring Charges (Detail) - Restructuring Activities and Associated Costs (USD $)	3 Months Ended
	Dec. 31, 2011
Liability as of October 1, 2011	$ 254,000
Restructuring charges	599,000
Cash payments	(697,000)
Non-cash charges	11,000
Liability as of December 31, 2011	167,000
Employee Severance [Member]
Liability as of October 1, 2011	65,000
Restructuring charges	(40,000)
Cash payments	(25,000)
Non-cash charges	0
Liability as of December 31, 2011	0
Asset Impairment Charges [Member]
Liability as of October 1, 2011	0
Restructuring charges	(11,000)
Cash payments	0
Non-cash charges	11,000
Liability as of December 31, 2011	0
Facility Closing [Member]
Liability as of October 1, 2011	77,000
Restructuring charges	139,000
Cash payments	(216,000)
Non-cash charges	0
Liability as of December 31, 2011	0
Equipment Relocation Costs [Member]
Liability as of October 1, 2011	112,000
Restructuring charges	511,000
Cash payments	(456,000)
Non-cash charges	0
Liability as of December 31, 2011	$ 167,000