CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jun. 30, 2013		16,454,422.000
Beginning Balance at Jun. 30, 2013	$ 81,838	$ 16,454	$ 34,654	$ 94,080	$ (20,836)	$ (42,514)
Net income (loss)	12,132			12,132
Unrealized losses on cash flow hedges, net of reclassifications to earnings	17,524					17,524
Change in the funded status of retiree benefit obligation net of tax benefits	(2,802)					(2,802)
ESOP compensation expense, including reclassifications	3,326		(1,475)		4,801
Share-based compensation (in shares)		(4,936)
Share based compensation	1,366	$ (5)	1,371
Stock option exercises (in shares)		112,964
Stock option exercises	1,480	$ 113	1,367
Ending Balance (in shares) at Jun. 30, 2014		16,562,450
Ending Balance at Jun. 30, 2014	114,864	$ 16,562	35,917	106,212	(16,035)	(27,792)
Net income (loss)	652			652
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(18,506)					(18,506)
Change in the funded status of retiree benefit obligation net of tax benefits	(14,122)					(14,122)
ESOP compensation expense, including reclassifications	4,424		(377)		4,801
Share-based compensation (in shares)		4,272
Share based compensation	1,267	$ 4	1,263
Stock option exercises (in shares)		95,723
Stock option exercises	$ 1,548	$ 96	1,452
Shares withheld to cover taxes (in shares)	(4,297)
Shares withheld to cover taxes	$ (116)	$ (4)	(112)
Ending Balance (in shares) at Jun. 30, 2015		16,658,148
Ending Balance at Jun. 30, 2015	90,011	$ 16,658	38,143	106,864	(11,234)	(60,420)
Net income (loss)	89,918			89,918
Unrealized losses on cash flow hedges, net of reclassifications to earnings	8,249					8,249
Change in the funded status of retiree benefit obligation net of tax benefits	(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	$ 182,594	$ 16,782	$ 39,096	$ 196,782	$ (6,434)	$ (63,632)