Retirement Benefit Plans (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	$ 347	$ 1,086
Other long-term liabilities	(4,377)	(4,246)
Amounts recognized in accumulated other comprehensive loss:
Net loss, Plans in which Assets Exceed Benefit Obligations	1,090	297
Net loss, Plans in which Benefit Obligations Exceed Assets	6,576	5,972
Prior service cost, Plans in which Assets Exceed Benefit Obligations	0	0
Prior service cost, Plans in which Benefit Obligations Exceed Assets	0	0
Net amount recognized in the consolidated balance sheets, Plans in which Assets Exceed Benefit Obligations	1,437	1,383
Net amount recognized in the consolidated balance sheets, Plans in which Benefit Obligations Exceed Assets	2,199	1,726
Amounts recognized in the consolidated balance sheets are:
Other assets	347	1,086
Other long-term liabilities	(4,377)	(4,246)
Accumulated other comprehensive loss pretax, Plans in which Assets Exceed Benefit Obligations	1,090	297
Accumulated other comprehensive loss pretax, Plans in which Benefit Obligations Exceed Assets	6,576	5,972
Net amount recognized in the consolidated balance sheets, Plans in which Assets Exceed Benefit Obligations	1,437	1,383
Net amount recognized in the consolidated balance sheets, Plans in which Benefit Obligations Exceed Assets	2,199	1,726
Other Assets [Member]
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	347	1,086
Other long-term liabilities	0	0
Amounts recognized in the consolidated balance sheets are:
Other assets	347	1,086
Other long-term liabilities	0	0
Accrued Liabilities [Member]
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	0	0
Other long-term liabilities	(46)	(46)
Amounts recognized in the consolidated balance sheets are:
Other assets	0	0
Other long-term liabilities	(46)	(46)
Other Liabilities [Member]
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations	0	0
Other long-term liabilities	(4,331)	(4,200)
Amounts recognized in the consolidated balance sheets are:
Other assets	0	0
Other long-term liabilities	$ (4,331)	$ (4,200)