CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Preferred Shares	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jun. 30, 2015		16,658,148
Beginning Balance at Jun. 30, 2015	$ 120,466	$ 16,658	$ 38,143		$ 142,651	$ (11,234)	$ (65,752)
Net (loss) income	71,791				71,791
Unrealized losses on cash flow hedges, net of reclassifications to earnings	10,644						10,644
Change in the funded status of retiree benefit obligations, net of tax	(11,461)						(11,461)
ESOP compensation expense, including reclassifications	3,387		(1,413)			4,800
Share-based compensation (in shares)		1,551
Share based compensation	956	$ 2	954
Stock option exercises (in shares)		127,039
Stock option exercises	1,693	$ 127	1,566
Shares withheld to cover taxes (in shares)		(5,177)
Shares withheld to cover taxes	(159)	$ (5)	(154)
Ending Balance (in shares) at Jun. 30, 2016		16,781,561
Ending Balance at Jun. 30, 2016	197,317	$ 16,782	39,096		214,442	(6,434)	(66,569)
Net (loss) income	22,551				22,551
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(2,390)						(2,390)
Change in the funded status of retiree benefit obligations, net of tax	7,466						7,466
ESOP compensation expense, including reclassifications	2,487		342			2,145
Share-based compensation (in shares)		(889)
Share based compensation	1,472	$ (1)	1,473
Stock option exercises (in shares)		82,803
Stock option exercises	$ 687	$ 83	604
Shares withheld to cover taxes (in shares)	(17,473)
Shares withheld to cover taxes	$ (38)	$ (18)	(20)
Ending Balance (in shares) at Jun. 30, 2017		16,846,002
Ending Balance at Jun. 30, 2017	229,552	$ 16,846	41,495		236,993	(4,289)	(61,493)
Net (loss) income	840
Beginning Balance (in shares) at Jun. 30, 2017		16,846,002
Beginning Balance at Jun. 30, 2017	229,552	$ 16,846	41,495		236,993	(4,289)	(61,493)
Net (loss) income	(18,280)				(18,280)
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(4,913)						(4,913)
Change in the funded status of retiree benefit obligations, net of tax	4,576						4,576
ESOP compensation expense, including reclassifications	2,294		150			2,144
Share-based compensation (in shares)		9,155
Share based compensation	1,527	$ 9	1,518
Stock option exercises (in shares)		96,502
Stock option exercises	1,342	$ 97	1,245
Consideration for Boyd Coffee acquisition (shares)				14,700
Consideration for Boyd Coffee acquisition	11,572		11,557	$ 15
Cumulative preferred dividends, undeclared and unpaid	(389)
Ending Balance (in shares) at Jun. 30, 2018		16,951,659		14,700
Ending Balance at Jun. 30, 2018	$ 229,055	$ 16,952	$ 55,965	$ 15	220,307	$ (2,145)	$ (62,039)
Adjustment due to the adoption of ASU | Accounting Standards Update 2017-12 [Member]					$ 300