Restructuring Accrual (Schedule of Changes in the Restructuring Accrual) (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Balance at beginning of year						$ 15,731	$ 7,388	$ 15,731
Restructuring charges	$ 4,300	$ 8,100	$ 2,400	$ 3,500			12,400	10,300	$ 16,600
Cash payments							(8,801)	(14,888)
Reversal of excess accrual			1,700
Balance at end of year	8,674		$ 7,388				8,674	7,388	15,731
Selling, general and administrative expenses [Member]
Restructuring Reserve [Roll Forward]
Reversal of excess accrual	$ 1,800					1,100	1,776	3,247	100
Employee Severance [Member] | Selling, general and administrative expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges					$ 1,000	$ 3,400	$ 11,863	$ 9,792	$ 14,700