Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Jun. 30, 2012
Number of Stock Options
Options outstanding at beginning of period	370,137
Exercised	(13,320)
Forfeited/expired	(133,635)
Options outstanding at end of period	223,182
Vested at end of period	223,182
Options exercisable at end of period	223,182
Weighted-Average Remaining Contractual Term
Options outstanding at end of period	219 days
Vested at end of period	219 days
Options exercisable at end of period	219 days
Weighted Average Exercise Price
Options outstanding at beginning of period	$ 14.57
Exercised	$ 7.75
Forfeited/expired	$ 17.29
Options outstanding at end of year	$ 13.34
Vested at end of period	$ 13.34
Options exercisable at end of period	$ 13.34
Aggregate Intrinsic Value
Options outstanding at end of period	$ 20
Vested at end of period	20
Options exercisable at end of period	$ 20