Summary of Significant Accounting Policies 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		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Loss from continuing operations	$ (1,050)	$ (1,007)	$ (3,947)	$ (3,212)
Income from discontinued operations, net of tax	0	0	0	736
Net loss	$ (1,050)	$ (1,007)	$ (3,947)	$ (2,476)
Weighted-average common shares outstanding (basic) (in shares)	5,466	5,448	5,460	5,435
Effect of dilutive securities:
Weighted-average common shares outstanding (diluted) (in shares)	5,466	5,454	5,460	5,449
Net loss per share – basic
Continuing operations (in dollars per share)	$ (0.19)	$ (0.19)	$ (0.72)	$ (0.59)
Discontinued operations (in dollars per share)	0.00	0.00	0.00	0.14
Net loss (in dollars per share)	(0.19)	(0.19)	(0.72)	(0.45)
Net loss per share – diluted:
Continuing operations (in dollars per share)	(0.19)	(0.19)	(0.72)	(0.59)
Discontinued operations (in dollars per share)	0.00	0.00	0.00	0.14
Net loss (in dollars per share)	$ (0.19)	$ (0.19)	$ (0.72)	$ (0.45)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	38	15	23	15
Restricted shares
Effect of dilutive securities:
Effect of dilutive securities (in shares)	0	6	0	13
Performance shares
Effect of dilutive securities:
Effect of dilutive securities (in shares)	0	0	0	1
Interest Rate Swap
Net loss per share – diluted:
Derivative, notional amount	$ 8,571		$ 8,571
Derivative, fair value, net	$ 79		$ 79