Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012
Number of Stock Options
Options outstanding at beginning of year	370,137
Exercised	(13,320)
Forfeited/expired	(163,635)
Options outstanding at end of year	193,182
Vested at end of year	193,182
Options exercisable at end of year	193,182
Options available for future grant	3,848,477
Weighted Average Remaining Contractual Term
Options outstanding at end of year	4 months 24 days
Vested at end of year	4 months 24 days
Options exercisable at end of year	4 months 24 days
Weighted Average Price
Options outstanding at beginning of year	$ 14.57
Exercised	$ 7.75
Forfeited/expired	$ 16.84
Options outstanding at end of year	$ 13.11
Vested at end of year	$ 13.11
Options exercisable at end of year	$ 13.11
Aggregate Intrinsic Value
Options outstanding at end of year	$ 3
Vested at end of year	3
Options exercisable at end of year	$ 3