Financial Results in Discontinued Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ 709	$ (580)	$ 476
ASC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			2,727
Income (loss) before income tax provision			180
Income tax provision (benefit)			(11)
Income from operations, net of tax			191
Gain on sale of discontinued operations, net of tax			2,328
Income (loss) from discontinued operations, net of tax			2,519
Discontinued Operations, Held-for-sale or Disposed of by Sale | Repair Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	1,339	5,964
Income (loss) before income tax provision	1,160	(808)	(3,104)
Income tax provision (benefit)	451	(228)	(1,061)
Income (loss) from discontinued operations, net of tax	$ 709	$ (580)	$ (2,043)