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Fair Value Measurements (Tables)
12 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Assets and Liabilities on Recurring Basis
Assets and liabilities that had recurring fair value measurements as of June 30, 2020 and 2019 were as follows: 
 Fair Value Measurements at Reporting Date Using
 TotalQuoted Prices
in Active
Markets for
Identical Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
As of June 30, 2020:
Interest rate swap not designated as cash flow hedge$ $ $ $ 
Total assets at fair value$ $ $ $ 
As of June 30, 2019:
Interest rate swap not designated as cash flow hedge$68 $ $68 $ 
Total liabilities at fair value$68 $ $68 $