Dilutive Effect of Company's Stock Options Restricted Shares and Performance Shares (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Income from continuing operations	$ 1,983	$ 2,865	$ 4,648	$ 5,810
Income (loss) from discontinued operations, net of tax	(76)	(387)	(368)	1,518
Net income	$ 1,907	$ 2,478	$ 4,280	$ 7,328
Weighted-average common shares outstanding (basic) (in shares)	5,413	5,374	5,399	5,359
Weighted-average common shares outstanding (diluted) (in shares)	5,431	5,402	5,420	5,399
Net income per share – basic
Continuing operations (in dollars per share)	$ 0.37	$ 0.53	$ 0.86	$ 1.08
Discontinued operations (in dollars per share)	$ (0.01)	$ (0.07)	$ (0.07)	$ 0.28
Net income (in dollars per share)	$ 0.36	$ 0.46	$ 0.79	$ 1.36
Net income per share – diluted:
Continuing operations (in dollars per share)	$ 0.37	$ 0.53	$ 0.86	$ 1.08
Discontinued operations (in dollars per share)	$ (0.01)	$ (0.07)	$ (0.07)	$ 0.28
Net income (in dollars per share)	$ 0.36	$ 0.46	$ 0.79	$ 1.36
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	17	18	20	58
Stock options
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Effect of dilutive securities (in shares)	0	1	0	1
Restricted shares
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Effect of dilutive securities (in shares)	18	14	16	10
Performance shares
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Effect of dilutive securities (in shares)	0	13	5	29