Discontinued Operations, Assets Held for Sale, and Business Divestiture - Financial Results in Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax			$ (736)	$ 368
Repair Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 0	$ 0	0	1,339
Income (loss) before income tax provision	0	(109)	1,160	(576)
Income tax (benefit) expense	0	(33)	424	(208)
Income (loss) from discontinued operations, net of tax	$ 0	$ (76)	$ 736	$ (368)