Business Segment Information (Disaggregation Of Foodservice Net Sales By Type Of Customer) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total net sales	$ 321,363	$ 317,882	$ 1,013,534	$ 984,117
Foodservice [Member]
Disaggregation of Revenue [Line Items]
Total net sales	151,949	164,844	491,833	482,029
Foodservice [Member] | National accounts [Member]
Disaggregation of Revenue [Line Items]
Total net sales	110,384	119,875	356,192	356,102
Foodservice [Member] | Branded and other [Member]
Disaggregation of Revenue [Line Items]
Total net sales	36,261	37,101	116,147	114,223
Foodservice [Member] | Other roll products [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 5,304	$ 7,868	$ 19,494	$ 11,704