Discontinued Operations - Operating Results from Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]
Total revenue			$ 5,297
(Loss) income from discontinued operations	(260)	1,136	2,309
Income tax benefit (provision)	84	(548)	(1,133)
(Loss) income from discontinued operations, net of income taxes	(176)	588	1,176
Loss on sale of discontinued operations			(1,691)
Income tax benefit			617
Loss on sale of discontinued operations, net of income taxes			$ (1,074)