Retirement Benefit Plans (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	$ 1,086	$ 520
Other long-term liabilities	(4,246)	(7,877)
Amounts recognized in accumulated other comprehensive loss:
Net loss, Plans in which Assets Exceed Benefit Obligations	297	872
Net loss, Plans in which Benefit Obligations Exceed Assets	5,972	9,907
Prior service cost, Plans in which Assets Exceed Benefit Obligations	0	0
Prior service cost, Plans in which Benefit Obligations Exceed Assets	0	31
Net amount recognized in the consolidated balance sheets, Plans in which Assets Exceed Benefit Obligations	1,383	1,392
Net amount recognized in the consolidated balance sheets, Plans in which Benefit Obligations Exceed Assets	1,726	2,061
Amounts recognized in the consolidated balance sheets are:
Other assets	1,086	520
Other long-term liabilities	(4,246)	(7,877)
Accumulated other comprehensive loss pretax, Plans in which Assets Exceed Benefit Obligations	297	872
Accumulated other comprehensive loss pretax, Plans in which Benefit Obligations Exceed Assets	5,972	9,938
Net amount recognized in the consolidated balance sheets, Plans in which Assets Exceed Benefit Obligations	1,383	1,392
Net amount recognized in the consolidated balance sheets, Plans in which Benefit Obligations Exceed Assets	1,726	2,061
Other Assets [Member]
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	1,086	520
Other long-term liabilities	(46)	0
Amounts recognized in the consolidated balance sheets are:
Other assets	1,086	520
Other long-term liabilities	(46)	0
Other Liabilities [Member]
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	0	0
Other long-term liabilities	(4,200)	(7,877)
Amounts recognized in the consolidated balance sheets are:
Other assets	0	0
Other long-term liabilities	$ (4,200)	$ (7,877)