Debt (Summary interest expense related to notes recognized) (Detail 2) - Interest expense - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Contractual coupon	$ 708	$ 1,378
Amortization of debt discount	1,414	2,805
Amortization of debt issuance costs	209	418
Interest expense	$ 2,331	$ 4,601

Represents amount of interest expenses contractual coupon.

No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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