Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	[1]	$ 1,665	$ 359
Total assets at fair value		1,665	359
Derivatives	[1]	207	910
Total liabilities at fair value		207	910
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	[1]	1,665	359
Total assets at fair value		1,665	359
Derivatives	[1]	207	910
Total liabilities at fair value		207	910
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value		$ 0	$ 0

[1] (in thousands)Level 1 Level 2 Level 3 TotalAssets: Derivatives (1)$— $359 $— $359Total assets at fair value$— $359 $— $359 Liabilities: Derivatives (1)$— $910 $— $910Total liabilities at fair value$— $910 $— $910 (1) Currency derivatives are valued based on observable market spot and forward rates and are classified within Level 2 of the fair value hierarchy.There have been no changes in classification and transfers between levels in the fair value hierarchy in the current period.