Pension and Retirement Plans (Tables)

3 Months Ended

Dec. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The fair value of the assets held by the U.K. pension plan by asset category are as follows:

	Fair Values as of
	December 31, 2017								September 30, 2017
	Fair Value Measurements Using Inputs Considered as								Fair Value Measurements Using Inputs Considered as
Asset Category	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	(Amounts in thousands)
Cash on deposit	$	51	$	51	$	—	$	—	$	62	$	62	$	—	$	—
Pooled funds	8,428		8,428		—		—		8,177		8,177		—		—
Total plan assets	$	8,479	$	8,479	$	—	$	—	$	8,239	$	8,239	$	—	$	—

Schedule of Net Benefit Costs

The components of net periodic benefit costs related to the U.S. and international plans are as follows:

	For the Three Months Ended December 31,
	2017									2016
	Foreign			U.S.			Total			Foreign			U.S.			Total
	(Amounts in thousands)
Pension:
Service cost	$	10		$	—		$	10		$	10		$	—		$	10
Interest cost	116			7			123			93			11			104
Expected return on plan assets	(75		)	—			(75		)	(65		)	—			(65		)
Amortization of:
Amortization of net gain (loss)	60			(1		)	59			91			(1		)	90
Net periodic benefit cost	$	111		$	6		$	117		$	129		$	10		$	139
Post Retirement:
Service cost	$	—		$	10		$	10		$	—		$	10		$	10
Interest cost	—			12			12			—			10			10
Amortization of net gain (loss)	—			(4		)	(4		)	—			4			4
Net periodic cost (benefit)	$	—		$	18		$	18		$	—		$	24		$	24