XML 84 R65.htm IDEA: XBRL DOCUMENT v3.10.0.1
Employee Benefit Plans - Components of Net Periodic Benefit Cost and Amounts Recognized in Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Components of net periodic benefit cost        
Pension settlement charge $ 10,948 $ 0 $ 10,948 $ 0
Pension Plan        
Components of net periodic benefit cost        
Service cost 0 0 0 0
Interest cost 1,426 1,432 2,852 2,864
Expected return on plan assets (1,485) (1,456) (2,970) (2,912)
Amortization of net loss (gain) 370 418 740 836
Pension settlement charge 10,948 0 10,948 0
Net periodic benefit (credit) cost 11,259 394 $ 11,570 $ 788
Weighted average assumptions used to determine benefit obligations        
Discount rate     4.05% 3.80%
Expected long-term return on plan assets     6.75% 6.75%
Other Postretirement Benefit Plan        
Components of net periodic benefit cost        
Service cost 133 152 $ 266,000 $ 304,000
Interest cost 222 209 444,000 418,000
Amortization of net loss (gain) (209) (210) (418,000) (420,000)
Net periodic benefit (credit) cost $ (293) $ (288) $ (586,000) $ (576,000)
Retiree Medical Plan        
Weighted average assumptions used to determine benefit obligations        
Discount rate     4.25% 4.13%
Death Benefit Plan        
Weighted average assumptions used to determine benefit obligations        
Discount rate     4.25% 4.12%