(10)	Employee Benefit Plans

Defined Benefit Plan

The components of net periodic pension cost related to the defined benefit pension plan for the three months ended September 30, 2019 and 2018 were as follows:

	Three months ended September 30,
(In thousands)	2019			2018
Interest cost	$	49		$	54
Expected return on plan assets		(63	)		(59	)
Amortization of net loss		40			35
Net periodic pension cost	$	26		$	30

The Company does not anticipate that it will make any additional contributions to the defined benefit pension plan during fiscal 2020.

SERP

The Board of Directors of The Bank of Greene County adopted The Bank of Greene County Supplemental Executive Retirement Plan (the “SERP Plan”), effective as of July 1, 2010. The SERP Plan benefits certain key senior executives of the Bank who have been selected by the Board to participate. The SERP Plan is intended to provide a benefit from the Bank upon retirement, death or disability or voluntary or involuntary termination of service (other than “for cause”). The SERP Plan is more fully described in Note 10 of the consolidated financial statements and notes thereto for the year ended June 30, 2019.

The net periodic pension costs related to the SERP Plan for the three months ended September 30, 2019 and 2018 were $205,000 and $158,000, respectively, consisting primarily of service costs and interest costs. The total liability for the SERP Plan was $5.5 million and $5.0 million at September 30, 2019 and June 30, 2019, respectively, and is included in accrued expenses and other liabilities. The total liability for the SERP Plan includes both accumulated net periodic pension costs and participant contributions.