Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Cash Flows From Operating Activities:
Net income	$ 121,764	$ 101,686	$ 74,986
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	24,147	21,111	20,407
Deferred income taxes and other noncash changes	(525)	306	2,720
Stock-based compensation expense	3,326	3,040	2,472
Excess tax benefit from stock-based compensation	(1,417)	(563)	(1,020)
Gain on sale of property	0	0	(6)
Loss on sale of discontinued operations	0	0	44,033
Pension plan activity	(296)	(591)	(243)
Changes in operating assets and liabilities:
Receivables	(3,547)	(1,900)	(6,881)
Inventories	1,802	366	1,122
Other current assets	1,445	5,229	(1,147)
Accounts payable and accrued liabilities	(4,114)	4,088	(7,352)
Net cash provided by operating activities	142,585	132,772	129,091
Cash Flows From Investing Activities:
Cash paid for acquisition, net of cash acquired	(12)	(92,217)	0
Payments for property additions	(16,671)	(18,298)	(15,961)
Proceeds from sale of property	0	0	6
Proceeds from sale of discontinued operations	0	0	25,610
Other-net	(740)	(1,810)	(1,180)
Net cash (used in) provided by investing activities	(17,423)	(112,325)	8,475
Cash Flows From Financing Activities:
Purchase of treasury stock	(155)	(569)	(3,120)
Payment of dividends (including special dividend payment, 2016-$136,677; 2015-$0; 2014-$0)	(190,546)	(49,778)	(46,988)
Excess tax benefit from stock-based compensation	1,417	563	1,020
Decrease in cash overdraft balance	0	0	(324)
Net cash used in financing activities	(189,284)	(49,784)	(49,412)
Net change in cash and equivalents	(64,122)	(29,337)	88,154
Cash and equivalents at beginning of year	182,202	211,539	123,385
Cash and equivalents at end of year	$ 118,080	$ 182,202	$ 211,539