Pension and Retirement Plans (Tables)

6 Months Ended

Mar. 31, 2021

Pension and Retirement Plans

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 March 31,
	2021						2020
	U.K.		U.S.		Total		U.K.		U.S.		Total
	(Amounts in thousands)
Pension:
Interest cost	$	61	$	2	$	63	$	66	$	4	$	70
Expected return on plan assets		(99)		—		(99)		(74)		—		(74)
Amortization of past service costs		2		—		2		2		—		2
Amortization of net gain		45		1		46		48		1		49
Net periodic benefit cost	$	9	$	3	$	12	$	42	$	5	$	47
Post Retirement:
Service cost	$	—	$	12	$	12	$	—	$	9	$	9
Interest cost		—		11		11		—		11		11
Amortization of net gain		—		12		12		—		6		6
Net periodic cost	$	—	$	35	$	35	$	—	$	26	$	26

	Six Months Ended March 31,
	2021						2020
	U.K.		U.S.		Total		U.K.		U.S.		Total
	(Amounts in thousands)
Pension:
Interest cost	$	119	$	5	$	124	$	132	$	8	$	140
Expected return on plan assets		(196)		—		(196)		(148)		—		(148)
Amortization of past service costs		4		—		4		4		—		4
Amortization of net gain (loss)		89		2		91		96		2		98
Net periodic benefit cost	$	16	$	7	$	23	$	84	$	10	$	94
Post Retirement:
Service cost	$	—	$	23	$	23	$	—	$	19	$	19
Interest cost		—		22		22		—		23		23
Amortization of net loss		—		25		25		—		12		12
Net periodic cost	$	—	$	70	$	70	$	—	$	54	$	54

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
	March 31, 2021								September 30, 2020
	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	$	76	$	76	$	—	$	—	$	471	$	471	$	—	$	—
Pooled funds		11,097		11,097		—		—		9,269		9,269		—		—
Total plan assets	$	11,173	$	11,173	$	—	$	—	$	9,740	$	9,740	$	—	$	—