Employee Benefit Plans - Outstanding Balance of Settlement Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
WCT Pension Trust [Member] \| Multiemployer Plans, Pension [Member]
Defined Benefit Plan Disclosure
Other Commitment	$ 0	$ 1,487
Local 807 Pension Plan [Member]
Defined Benefit Plan Disclosure
Other Commitment	$ 182	$ 182

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant