Retirement Benefit Plans (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Benefit obligations:
Benefit obligations at beginning of year	$ 26,140	$ 23,596
Transfer in	465	0
Service cost	148	126
Interest cost	978	987
Actuarial loss (gain)	1,328	2,737
Benefits paid	(1,377)	(1,306)
Currency translation	3	0
Plan assets at end of year	27,685	26,140
Plan assets:
Plan assets at beginning of year	22,110	20,435
Actual return on plan assets	117	2,465
Employer contributions	46	516
Benefits paid	(1,377)	(1,306)
Plan assets at end of year	$ 20,896	$ 22,110