Business Segment Information (Disaggregation Of Foodservice Net Sales By Type Of Customer) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019		Jun. 30, 2018		Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales		$ 323,670	$ 317,882	$ 349,581	$ 316,654	$ 308,170	$ 296,174	$ 319,665	$ 298,916	$ 1,307,787	[1],[2]	$ 1,222,925	[1],[2]	$ 1,201,842	[1],[2]
Foodservice [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1],[2]									651,166		572,691		560,425
Foodservice [Member] | National accounts [Member]
Disaggregation of Revenue [Line Items]
Net sales										480,249		430,680		421,858
Foodservice [Member] | Branded and other [Member]
Disaggregation of Revenue [Line Items]
Net sales										151,553		142,011		138,567
Foodservice [Member] | Other roll products [Member]
Disaggregation of Revenue [Line Items]
Net sales										$ 19,364		$ 0		$ 0

[1] All intercompany transactions have been eliminated.

[2] Net sales and long-lived assets are predominately domestic.