Income Taxes (Unrecognized tax benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balances at beginning of the year	$ 2,360	$ 2,630	$ 1,010
Additions (reductions) related to current year tax positions	0	(390)	1,210
Additions related to tax positions taken in prior years	530	360	450
Reductions related to settlements with tax authorities	0	(240)	0
Reductions due to lapse of statute of limitations	(80)	0	(40)
Balance at the end of the year	$ 2,810	$ 2,360	$ 2,630