Business Segment Information (Net Sales To Major Customers) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenue, Major Customer [Line Items]
Net sales	$ 289,874	$ 293,834	$ 326,773	$ 291,361	$ 284,490	$ 287,765	$ 324,769	$ 294,085	$ 1,201,842	$ 1,191,109	$ 1,104,514
Wal-Mart Stores, Inc. [Member]
Revenue, Major Customer [Line Items]
Net sales									201,484	189,417	177,354
McLane Company Inc [Member]
Revenue, Major Customer [Line Items]
Net sales									$ 198,153	$ 232,241	$ 202,218
Customer Concentration Risk [Member] | Wal-Mart Stores, Inc. [Member]
Revenue, Major Customer [Line Items]
Net sales as a percentage of consolidated net sales									17.00%	16.00%	16.00%
Customer Concentration Risk [Member] | McLane Company Inc [Member]
Revenue, Major Customer [Line Items]
Net sales as a percentage of consolidated net sales									16.00%	19.00%	18.00%