Derivative Instruments and Hedging Activities - Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ (5,615)		$ 2,346
Beginning balance		$ 6,186		$ 8,126
Amount reclassified to earnings	(946)		(3,719)
Amount reclassified to earnings		(694)		(3,775)
Net change in unrealized gains or losses	(1,379)		(6,567)
Net change in unrealized gains or losses		(581)		560
Ending balance	$ (7,940)		$ (7,940)
Ending balance		$ 4,911		$ 4,911

AOCI, Cash Flow Hedge, Cumulative Gain (Loss), Before Tax

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- Definition

Accumulated Other Comprehensive Income [Roll Forward]

+ References

No definition available.

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- Definition

Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

+ References

No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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