Financial Derivatives (Tables)

9 Months Ended

May 31, 2018

Derivative Instruments And Hedges [Abstract]

Schedule Of Financial Derivatives

($ in thousands)	Balance sheet location	May 31, 2018			May 31, 2017			August 31, 2017
Derivatives designated as hedging    instruments:
Foreign currency forward contracts	Other current assets	$	2,149		$	—		$	—
Foreign currency forward contracts	Other current liabilities		(49	)		(2,109	)		(1,633	)
Total derivatives designated as hedging     instruments		$	2,100		$	(2,109	)	$	(1,633	)
Derivatives not designated as hedging    instruments:
Foreign currency forward contracts	Other current assets	$	92		$	71		$	9
Foreign currency forward contracts	Other current liabilities		(11	)		(3	)		(114	)
Total derivatives not designated as    hedging instruments		$	81		$	68		$	(105	)

Schedule Of Derivative Instruments, Effect On Other Comprehensive Income (Loss)

	Three months ended					Nine months ended
($ in thousands)	May 31, 2018		May 31, 2017			May 31, 2018		May 31, 2017
Foreign currency forward contracts, net of tax expense    (benefit) of $544, ($744), $271, and ($181)	$	1,404	$	(1,213	)	$	480	$	(477	)