Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2011 Year
Number of Stock Options
Options outstanding at beginning of period	370,137
Forfeited/expired	(113,375)
Options outstanding at end of period	256,762
Vested at end of period	256,762
Options exercisable at end of period	256,762
Weighted Average Remaining Contractual Term
Options outstanding at end of period	1
Vested at end of period	1
Options exercisable at end of period	1
Weighted Average Exercise Price
Options outstanding at beginning of period	$ 14.57
Forfeited/expired	$ 17.23
Options outstanding at end of year	$ 13.39
Vested at end of period	$ 13.39
Options exercisable at end of period	$ 13.39
Aggregate Intrinsic Value
Options outstanding at end of period	$ 63
Vested at end of period	63
Options exercisable at end of period	$ 63