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, 2013	$ 636,108	$ 194,284	$ 15,600	$ 482,878	$ (56,654)
Beginning Balance, shares at Jun. 30, 2013		70,223,000			(8,012,000)
Shares issued under share-based compensation plans	3,655	$ 4,482			$ (827)
Shares issued under share-based compensation plans (in shares)		712,000			(44,000)
Net earnings	38,449			38,449
Purchases of treasury stock	(19,973)				$ (19,973)
Purchases of treasury stock, shares					(1,333,000)
Treasury stock under deferred compensation arrangements		$ 1,809			$ (1,809)
Treasury stock under deferred compensation arrangements, (in shares)					(93,000)
Foreign currency translation adjustments	2,363		2,363
Share-based compensation expense	12,347	12,347
Pension adjustment, net of taxes of ($1,886) for the year ended June 30, 2016, $(602) for the year ended June 30, 2015 and $387 for the year ended June 30, 2014, respectively	1,443		1,443
Excess tax benefits (tax deficiency) from share-based compensation expense	651	651
Ending Balance at Jun. 30, 2014	675,043	$ 213,573	19,406	521,327	$ (79,263)
Ending Balance, shares at Jun. 30, 2014		70,935,000			(9,482,000)
Treasury stock under deferred compensation arrangements		$ (1,809)			$ 1,809
Treasury stock in deferred compensation plan, (in shares)					93,000
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 ($1,886) for the year ended June 30, 2016, $(602) for the year ended June 30, 2015 and $387 for the year ended June 30, 2014, respectively	(2,244)		(2,244)
Excess tax benefits (tax deficiency) from share-based compensation expense	(106)	(106)
APIC pool reclassification	(3,812)	(3,812)
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)
Treasury stock under deferred compensation arrangements		$ (418)			$ 418
Treasury stock in deferred compensation plan, (in shares)		(72,000)			72,000
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)				(380,538)
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 ($1,886) for the year ended June 30, 2016, $(602) for the year ended June 30, 2015 and $387 for the year ended June 30, 2014, respectively	(7,031)		(7,031)
Excess tax benefits (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)
Treasury stock under deferred compensation arrangements		$ (1,538)			$ 1,538
Treasury stock in deferred compensation plan, (in shares)		14,000			92,000