Discontinued Operations Assets Held for Sale and Business Divestiture - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended					0 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2014 Repair Group [Member]	Sep. 30, 2013 Repair Group [Member]	Dec. 10, 2012 ASC [Member] Country	Sep. 30, 2013 ASC [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance Costs					$ 959
Asset impairment charges	0	(72)	0		354
Severance costs incurred					685
Severance costs paid					6
Severance costs incurred and paid				274
Cash proceeds from divestiture						8,100
Cash proceeds placed in Escrow from divestiture						980
Discontinued operations located in foreign countries (in countries)						3
Pre-tax gain from divestiture							$ 3,980