Retirement Benefit Plans (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Oct. 31, 2012	Sep. 30, 2012	Oct. 31, 2011
Amounts recognized in the consolidated balance sheets are:
Asset Amount	$ 20,435	$ 18,949	$ 18,949	$ 16,642
Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	18,436		16,856
Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	1,999		2,093	2,093
Large value [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	518		288
Large value [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Large value [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	518		288
Large value [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Large blend [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	9,632		8,592
Large blend [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Large blend [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	9,632		8,592
Large blend [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Large growth [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	496		640
Large growth [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Large growth [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	496		640
Large growth [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Mid blend [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	233		19
Mid blend [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Mid blend [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	233		19
Mid blend [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Small blend [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	245		4
Small blend [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Small blend [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	245		4
Small blend [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Foreign large blend [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	1,617		1,295
Foreign large blend [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Foreign large blend [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	1,617		1,295
Foreign large blend [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Diversified emerging markets [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	31		70
Diversified emerging markets [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Diversified emerging markets [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	31		70
Diversified emerging markets [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Inflation protected bond [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	521		952
Inflation protected bond [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Inflation protected bond [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	521		952
Inflation protected bond [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Intermediate term bond [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	6,231		6,412
Intermediate term bond [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Intermediate term bond [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	4,232		4,319
Intermediate term bond [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	1,999		2,093
High inflation bond [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	310		299
High inflation bond [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
High inflation bond [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	310		299
High inflation bond [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Emerging markets bonds [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	102		239
Emerging markets bonds [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Emerging markets bonds [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	102		239
Emerging markets bonds [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0		0
Short-term bonds [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	499		139
Short-term bonds [Member] | Level 1 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	0
Short-term bonds [Member] | Level 2 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	499		139
Short-term bonds [Member] | Level 3 [Member]
Amounts recognized in the consolidated balance sheets are:
Asset Amount	$ 0		$ 0