Business Segment Information (Net Sales To Major Customers) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Revenue, Major Customer [Line Items]
Net sales	$ 284,490	$ 287,765	$ 324,769	$ 294,085	$ 277,716	$ 263,400	$ 303,411	$ 259,987	$ 1,191,109	$ 1,104,514	$ 1,041,075
McLane Company Inc [Member]
Revenue, Major Customer [Line Items]
Net sales									232,241	202,218	186,817
Wal-Mart Stores, Inc. [Member]
Revenue, Major Customer [Line Items]
Net sales									$ 189,417	$ 177,354	$ 175,388
Customer Concentration Risk [Member] | McLane Company Inc [Member]
Revenue, Major Customer [Line Items]
Net sales as a percentage of consolidated net sales									19.00%	18.00%	18.00%
Customer Concentration Risk [Member] | Wal-Mart Stores, Inc. [Member]
Revenue, Major Customer [Line Items]
Net sales as a percentage of consolidated net sales									16.00%	16.00%	17.00%