CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Shares	Common Stock	Additional Paid-in Capital	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jun. 30, 2018		14,700	16,951,659
Beginning Balance at Jun. 30, 2018	$ 229,055	$ 15	$ 16,952	$ 55,965	$ 220,307	$ (2,145)	$ (62,039)
Net income (loss)	(2,986)				(2,986)
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(4,637)						(4,637)
ESOP compensation expense, including reclassifications	529			529
Share based compensation	433			433
Stock option exercises (in shares)			26,042
Stock option exercises	326		$ 26	300
Cumulative preferred dividends, undeclared and unpaid	(132)				(132)
Ending Balance (in shares) at Sep. 30, 2018		14,700	16,977,701
Ending Balance at Sep. 30, 2018	222,588	$ 15	$ 16,978	57,227	217,189	(2,145)	(66,676)
Beginning Balance (in shares) at Jun. 30, 2018		14,700	16,951,659
Beginning Balance at Jun. 30, 2018	229,055	$ 15	$ 16,952	55,965	220,307	(2,145)	(62,039)
Net income (loss)	(64,835)
Change in funded status of retiree benefit obligations, net of tax	(7,594)
Ending Balance (in shares) at Mar. 31, 2019		14,700	17,004,561
Ending Balance at Mar. 31, 2019	165,784	$ 15	$ 17,005	57,321	155,072	0	(63,629)
Beginning Balance (in shares) at Sep. 30, 2018		14,700	16,977,701
Beginning Balance at Sep. 30, 2018	222,588	$ 15	$ 16,978	57,227	217,189	(2,145)	(66,676)
Net income (loss)	(10,100)				(10,100)
Unrealized losses on cash flow hedges, net of reclassifications to earnings	2,398						2,398
Pension Settlement Charge	8,147
Change in funded status of retiree benefit obligations, net of tax	(5,651)						(5,651)
ESOP compensation expense, including reclassifications	405			(1,740)		2,145
Share-based compensation (in shares)			16,266
Share based compensation	490		$ 16	474
Stock option exercises (in shares)			8,562
Stock option exercises	182		$ 9	173
Cumulative preferred dividends, undeclared and unpaid	(134)				(134)
Ending Balance (in shares) at Dec. 31, 2018		14,700	17,002,529
Ending Balance at Dec. 31, 2018	218,325	$ 15	$ 17,003	56,134	206,955	0	(61,782)
Net income (loss)	(51,749)				(51,749)
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(2,705)						(2,705)
Pension Settlement Charge	2,801						2,801
Change in funded status of retiree benefit obligations, net of tax	(1,943)						(1,943)
Share based compensation	700			700
Stock option exercises (in shares)			2,032
Stock option exercises	489		$ 2	487
Cumulative preferred dividends, undeclared and unpaid	(134)				(134)
Ending Balance (in shares) at Mar. 31, 2019		14,700	17,004,561
Ending Balance at Mar. 31, 2019	165,784	$ 15	$ 17,005	57,321	155,072	$ 0	(63,629)
Beginning Balance (in shares) at Jun. 30, 2019		14,700	17,042,132
Beginning Balance at Jun. 30, 2019	157,494	$ 15	$ 17,042	57,912	146,177		(63,652)
Net income (loss)	4,654
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(1,301)						(1,301)
ESOP compensation expense, including reclassifications (in shares)			52,534
ESOP compensation expense, including reclassifications	860		$ 53	807
Share based compensation	(1)			(1)
Stock option exercises (in shares)			532
Stock option exercises	0
Cumulative preferred dividends, undeclared and unpaid	(137)				(137)
Ending Balance (in shares) at Sep. 30, 2019		14,700	17,095,198
Ending Balance at Sep. 30, 2019	161,569	$ 15	$ 17,095	58,718	150,694		(64,953)
Beginning Balance (in shares) at Jun. 30, 2019		14,700	17,042,132
Beginning Balance at Jun. 30, 2019	157,494	$ 15	$ 17,042	57,912	146,177		(63,652)
Net income (loss)	(27,369)
Change in funded status of retiree benefit obligations, net of tax	1,416
Ending Balance (in shares) at Mar. 31, 2020		14,700	17,231,473
Ending Balance at Mar. 31, 2020	147,736	$ 15	$ 17,234	61,027	118,394		(48,934)
Beginning Balance (in shares) at Sep. 30, 2019		14,700	17,095,198
Beginning Balance at Sep. 30, 2019	161,569	$ 15	$ 17,095	58,718	150,694		(64,953)
Net income (loss)	7,754				7,754
Unrealized losses on cash flow hedges, net of reclassifications to earnings	15,945						15,945
ESOP compensation expense, including reclassifications (in shares)			55,623
ESOP compensation expense, including reclassifications	581		$ 56	525
Share based compensation	319			319
Stock option exercises (in shares)			26,627
Stock option exercises	130		$ 29	101
Cumulative preferred dividends, undeclared and unpaid	(138)				(138)
Ending Balance (in shares) at Dec. 31, 2019		14,700	17,177,448
Ending Balance at Dec. 31, 2019	186,160	$ 15	$ 17,180	59,663	158,310		(49,008)
Net income (loss)	(39,777)				(39,777)
Unrealized losses on cash flow hedges, net of reclassifications to earnings	(5,638)						(5,638)
Pension Settlement Charge	4,296
Change in funded status of retiree benefit obligations, net of tax	1,416						1,416
ESOP compensation expense, including reclassifications (in shares)			54,025
ESOP compensation expense, including reclassifications	908		$ 54	854
Share based compensation	510			510
Cumulative preferred dividends, undeclared and unpaid	(139)				(139)
Ending Balance (in shares) at Mar. 31, 2020		14,700	17,231,473
Ending Balance at Mar. 31, 2020	$ 147,736	$ 15	$ 17,234	$ 61,027	$ 118,394		$ (48,934)