Business Segment Information (Disaggregation Of Net Sales By Class Of Similar Products) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2018
Segment Reporting Information [Line Items]
Net sales		$ 320,854	$ 321,363	$ 355,117	$ 337,054	$ 323,670	$ 317,882	$ 349,581	$ 316,654	$ 1,334,388	[1],[2]	$ 1,307,787	[1],[2]	$ 1,222,925	[1],[2]
Retail [Member]
Segment Reporting Information [Line Items]
Net sales	[1],[2]									714,127		656,621		650,234
Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales	[1],[2]									620,261		651,166		572,691
Frozen breads [Member] | Retail [Member]
Segment Reporting Information [Line Items]
Net sales										290,940		259,290		252,186
Refrigerated dressings, dips and other [Member] | Retail [Member]
Segment Reporting Information [Line Items]
Net sales										218,125		219,614		226,276
Shelf-stable dressings and croutons [Member] | Retail [Member]
Segment Reporting Information [Line Items]
Net sales										205,062		177,717		171,772
Dressings and sauces [Member] | Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales										436,909		467,364		430,944
Frozen breads and other [Member] | Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales										161,093		164,438		141,747
Other roll products [Member] | Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales										$ 22,259		$ 19,364		$ 0

[1] All intercompany transactions have been eliminated.

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