Pension and Retirement Plans (Tables)

9 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

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

	Three Months Ended June 30,
	2020						2019
	U.K.		U.S.		Total		U.K.		U.S.		Total
	(Amounts in thousands)
Pension:
Interest cost	$	64	$	3	$	67	$	91	$	6	$	97
Expected return on plan assets		(72)		—		(72)		(76)		—		(76)
Amortization of past service costs		2		—		2		—		—		—
Amortization of net gain (loss)		46		—		46		37		(1)		36
Net periodic benefit cost	$	40	$	3	$	43	$	52	$	5	$	57
Post Retirement:
Service cost	$	—	$	10	$	10	$	—	$	14	$	14
Interest cost		—		12		12		—		9		9
Amortization of net gain (loss)		—		4		4		—		(4)		(4)
Net periodic cost	$	—	$	26	$	26	$	—	$	19	$	19

	Nine Months Ended June 30,
	2020						2019
	U.K.		U.S.		Total		U.K.		U.S.		Total
	(Amounts in thousands)
Pension:
Interest cost	$	196	$	11	$	207	$	274	$	18	$	292
Expected return on plan assets		(220)		—		(220)		(231)		—		(231)
Amortization of past service costs		6		—		6		—		—		—
Amortization of net gain (loss)		142		2		144		113		(3)		110
Net periodic benefit cost	$	124	$	13	$	137	$	156	$	15	$	171
Post Retirement:
Service cost	$	—	$	29	$	29	$	—	$	31	$	31
Interest cost		—		35		35		—		35		35
Amortization of net gain (loss)		—		16		16		—		(13)		(13)
Net periodic cost	$	—	$	80	$	80	$	—	$	53	$	53

Schedule of fair value of Plan Assets

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

	Fair Values as of
	June 30, 2020								September 30, 2019
	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	$	121	$	121	$	—	$	—	$	279	$	279	$	—	$	—
Pooled funds		8,855		8,855		—		—		7,959		7,959		—		—
Total plan assets	$	8,976	$	8,976	$	—	$	—	$	8,238	$	8,238	$	—	$	—