Employee Benefit Plans - Schedule of Multi-Employer Pension Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Local 807 Pension Plan
Multiemployer Plans [Line Items]
Other Commitment	$ 182		$ 182
Multiemployer Plan
Multiemployer Plans [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	309	$ 452	537	$ 880
Other Postretirement Benefit Plan
Multiemployer Plans [Line Items]
Service cost	5	147	10	294
Interest cost	73	214	147	428
Defined Benefit Plan, Amortization of Gain (Loss)	2,728	125	5,456	250
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(4,481)	(392)	(8,961)	(784)
Net periodic benefit cost	$ (7,131)	$ (156)	$ (14,260)	$ (312)
Postretirement Health Coverage
Multiemployer Plans [Line Items]
Discount rate			0.06%	3.62%
Postretirement Life Insurance
Multiemployer Plans [Line Items]
Discount rate			2.87%	3.64%