Dilutive Effect of Company's Stock Options Restricted Shares and Performance Shares (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Loss from continuing operations	$ (2,598)	$ (1,345)
Loss from discontinued operations, net of tax	0	(63)
Net loss	$ (2,598)	$ (1,408)
Weighted-average common shares outstanding (basic) (in shares)	5,452	5,422
Effect of dilutive securities:
Weighted-average common shares outstanding (diluted) (in shares)	5,452	5,447
Net loss per share – basic
Continuing operations (in dollars per share)	$ (0.48)	$ (0.25)
Discontinued operations (in dollars per share)	0.00	(0.01)
Net loss (in dollars per share)	(0.48)	(0.26)
Net loss per share – diluted:
Continuing operations (in dollars per share)	(0.48)	(0.25)
Discontinued operations (in dollars per share)	0.00	(0.01)
Net loss (in dollars per share)	$ (0.48)	$ (0.26)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share	22	8
Restricted shares
Effect of dilutive securities:
Restricted shares (in shares)	0	25