Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Beginning Balance at Jun. 30, 2014	$ 675,043	$ 213,573	$ 19,406	$ 521,327	$ (79,263)
Beginning Balance, shares at Jun. 30, 2014		70,935,000			(9,482,000)
Shares issued under share-based compensation plans	4,111	$ 5,196			$ (1,085)
Shares issued under share-based compensation plans (in shares)		773,000			(75,000)
Net earnings	65,975			65,975
Purchases of treasury stock	$ (12,729)				$ (12,729)
Purchases of treasury stock, shares	(936,049)				(936,000)
Treasury stock under deferred compensation arrangements		$ 418			$ (418)
Treasury stock under deferred compensation arrangements, (in shares)		72,000			(72,000)
Foreign currency translation adjustments	$ (8,497)		(8,497)
Share-based compensation expense	11,340	$ 11,340
Pension adjustment, net of taxes of $674 for the year ended June 30, 2017,($1,886) for the year ended June 30, 2016 and ($602) for the year ended June 30, 2015, respectively	(2,244)		(2,244)
APIC pool reclassification	(3,812)	(3,812)
Tax deficiency from share-based compensation expense	(106)	(106)
Ending Balance at Jun. 30, 2015	729,081	$ 226,609	8,665	587,302	$ (93,495)
Ending Balance, shares at Jun. 30, 2015		71,780,000			(10,565,000)
Shares issued under share-based compensation plans	7,649	$ 9,653			$ (2,004)
Shares issued under share-based compensation plans (in shares)		1,046,000			(112,000)
Net earnings	65,486			65,486
Purchases of treasury stock	$ (6,284)				$ (6,284)
Purchases of treasury stock, shares	(380,538)				(381,000)
Treasury stock under deferred compensation arrangements		$ (1,538)			$ 1,538
Treasury stock under deferred compensation arrangements, (in shares)		14,000			92,000
Foreign currency translation adjustments	$ (15,651)		(15,651)
Share-based compensation expense	9,675	$ 9,675
Pension adjustment, net of taxes of $674 for the year ended June 30, 2017,($1,886) for the year ended June 30, 2016 and ($602) for the year ended June 30, 2015, respectively	(7,031)		(7,031)
Tax deficiency from share-based compensation expense	(587)	(587)
Ending Balance at Jun. 30, 2016	782,338	$ 243,812	(14,017)	652,788	$ (100,245)
Ending Balance, shares at Jun. 30, 2016		72,840,000			(10,966,000)
Shares issued under share-based compensation plans	10,956	$ 15,092			$ (4,136)
Shares issued under share-based compensation plans (in shares)		1,204,000			(159,000)
Net earnings	$ 95,274			95,274
Purchases of treasury stock, shares	0
Treasury stock under deferred compensation arrangements		$ (1,022)			$ 1,022
Treasury stock under deferred compensation arrangements, (in shares)		37,000			185,000
Foreign currency translation adjustments	$ (2,275)		(2,275)
Share-based compensation expense	11,756	$ 11,756
Pension adjustment, net of taxes of $674 for the year ended June 30, 2017,($1,886) for the year ended June 30, 2016 and ($602) for the year ended June 30, 2015, respectively	2,514		2,514
Ending Balance at Jun. 30, 2017	$ 900,563	$ 269,638	$ (13,778)	$ 748,062	$ (103,359)
Ending Balance, shares at Jun. 30, 2017		74,081,000			(10,940,000)