Pension Plans (Details) - Defined Benefit Pension Plans - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Components of net periodic pension cost (benefit)
Service cost	$ 158	$ 172
Interest cost	2,261	2,332
Expected return on plan assets	(3,472)	(3,388)
Amortization of actuarial loss	413	154
Administrative expenses	41	38
Net pension benefit	$ (599)	$ (692)