Pension and Retirement Plans (Detail) - Components of net periodic benefit costs - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension:
Pension:
Service cost	$ 13	$ 10	$ 42	$ 34
Interest cost	170	213	515	630
Expected return on plan assets	(105)	(120)	(317)	(352)
Amortization of:
Prior service gain	0	0	0	0
Amortization of net gain	48	21	149	63
Net periodic benefit cost	126	124	389	375
Post Retirement:
Pension:
Service cost	9	3	26	8
Interest cost	11	10	33	32
Amortization of:
Amortization of net gain	(13)	(35)	(38)	(107)
Net periodic benefit cost	7	(22)	21	(67)
Foreign | Pension:
Pension:
Service cost	13	10	42	34
Interest cost	157	196	476	579
Expected return on plan assets	(105)	(120)	(317)	(352)
Amortization of:
Prior service gain	0	0	0	0
Amortization of net gain	49	24	151	70
Net periodic benefit cost	114	110	352	331
Foreign | Post Retirement:
Pension:
Service cost	0	0	0	0
Interest cost	0	0	0	0
Amortization of:
Amortization of net gain	0	0	0	0
Net periodic benefit cost	0	0	0	0
U.S. | Pension:
Pension:
Service cost	0	0	0	0
Interest cost	13	17	39	51
Expected return on plan assets	0	0	0	0
Amortization of:
Prior service gain	0	0	0	0
Amortization of net gain	(1)	(3)	(2)	(7)
Net periodic benefit cost	12	14	37	44
U.S. | Post Retirement:
Pension:
Service cost	9	3	26	8
Interest cost	11	10	33	32
Amortization of:
Amortization of net gain	(13)	(35)	(38)	(107)
Net periodic benefit cost	$ 7	$ (22)	$ 21	$ (67)