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Post Retirement Benefits (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2019
Pension, health and life insurance expense: |  |  |
Multi-employer plan contributions | $ 231,000 | $ 178,000 |
Defined contribution plan contributions | 261,000 | 259,000 |
Total pension expense | 492,000 | 437,000 |
Interest cost | 71,000 | 69,000 |
Amortization of prior service costs | (124,000) | (124,000) |
Amortization of net loss | 29,000 | 43,000 |
Net periodic benefit cost | (24,000) | (12,000) |
Total post retirement benefits expense | 468,000 | $ 425,000 |
Payments to pension plans | 342,000 |  |
Payments for post retirement healthcare and life insurance | 84,000 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Accrued Expected Pension Plan Payments | $ 710,000 |  |
Scenario, Forecast [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Expected payments to pension plans |  |  | $ 1,628,000
Expected future payments for other post retirement benefits |  |  | $ 1,073,000

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