Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2021 USD ($) Security	Sep. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 94,352		$ 87,974
More than 12 months, fair value	20,128		2,469
Total, fair value	114,480		90,443
Less than 12 months, unrealized losses	1,859		1,343
More than 12 months, unrealized losses	796		61
Total, unrealized losses	$ 2,655		$ 1,404
Less than 12 months, number of securities | Security	35		29
More than 12 months, number of securities | Security	7		1
Total, number of securities | Security	42		30
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 139,732		$ 63,977
More than 12 months, fair value	2,154		471
Total, fair value	141,886		64,448
Less than 12 months, unrealized losses	1,669		443
More than 12 months, unrealized losses	80		29
Total, unrealized losses	$ 1,749		$ 472
Less than 12 months, number of securities | Security	166		84
More than 12 months, number of securities | Security	3		1
Total, number of securities | Security	169		85
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 234,084		$ 151,951
More than 12 months, fair value	22,282		2,940
Total, fair value	256,366		154,891
Less than 12 months, unrealized losses	3,528		1,786
More than 12 months, unrealized losses	876		90
Total, unrealized losses	$ 4,404		$ 1,876
Less than 12 months, number of securities | Security	201		113
More than 12 months, number of securities | Security	10		2
Total, number of securities | Security	211		115
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0
Proceeds from sale of available-for-sale securities	0	0
Gross realized gains (losses) on sale of available-for-sale securities	0	0
Other-than-temporary impairment losses	0	$ 0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	0		$ 6,787
More than 12 months, fair value	6,757		0
Total, fair value	6,757		6,787
Less than 12 months, unrealized losses	0		212
More than 12 months, unrealized losses	243		0
Total, unrealized losses	$ 243		$ 212
Less than 12 months, number of securities | Security	0		2
More than 12 months, number of securities | Security	2		0
Total, number of securities | Security	2		2
U.S. Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,966		$ 1,970
More than 12 months, fair value	0		0
Total, fair value	1,966		1,970
Less than 12 months, unrealized losses	6		1
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 6		$ 1
Less than 12 months, number of securities | Security	1		1
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	1		1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 6,975		$ 1,991
More than 12 months, fair value	0		0
Total, fair value	6,975		1,991
Less than 12 months, unrealized losses	18		2
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 18		$ 2
Less than 12 months, number of securities | Security	1		1
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	1		1
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 4,115
More than 12 months, fair value	0
Total, fair value	4,115
Less than 12 months, unrealized losses	0
More than 12 months, unrealized losses	0
Total, unrealized losses	$ 0
Less than 12 months, number of securities | Security	4
More than 12 months, number of securities | Security	0
Total, number of securities | Security	4
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 81,594		$ 42,751
More than 12 months, fair value	226		0
Total, fair value	81,820		42,751
Less than 12 months, unrealized losses	1,120		303
More than 12 months, unrealized losses	8		0
Total, unrealized losses	$ 1,128		$ 303
Less than 12 months, number of securities | Security	144		76
More than 12 months, number of securities | Security	1		0
Total, number of securities | Security	145		76
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 23,218		$ 19,071
More than 12 months, fair value	0		0
Total, fair value	23,218		19,071
Less than 12 months, unrealized losses	121		167
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 121		$ 167
Less than 12 months, number of securities | Security	5		4
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	5		4
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 12,228		$ 12,839
More than 12 months, fair value	0		0
Total, fair value	12,228		12,839
Less than 12 months, unrealized losses	52		90
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 52		$ 90
Less than 12 months, number of securities | Security	2		2
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	2		2
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 64,095		$ 59,176
More than 12 months, fair value	13,371		2,469
Total, fair value	77,466		61,645
Less than 12 months, unrealized losses	1,690		933
More than 12 months, unrealized losses	553		61
Total, unrealized losses	$ 2,243		$ 994
Less than 12 months, number of securities | Security	24		21
More than 12 months, number of securities | Security	5		1
Total, number of securities | Security	29		22
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 28,918		$ 3,890
More than 12 months, fair value	0		0
Total, fair value	28,918		3,890
Less than 12 months, unrealized losses	298		12
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 298		$ 12
Less than 12 months, number of securities | Security	8		3
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	8		3
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 958		$ 970
More than 12 months, fair value	0		0
Total, fair value	958		970
Less than 12 months, unrealized losses	42		30
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 42		$ 30
Less than 12 months, number of securities | Security	1		1
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	1		1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,786		$ 2,506
More than 12 months, fair value	1,928		471
Total, fair value	3,714		2,977
Less than 12 months, unrealized losses	3		36
More than 12 months, unrealized losses	72		29
Total, unrealized losses	$ 75		$ 65
Less than 12 months, number of securities | Security	2		2
More than 12 months, number of securities | Security	2		1
Total, number of securities | Security	4		3
Other Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 8,231
More than 12 months, fair value	0
Total, fair value	8,231
Less than 12 months, unrealized losses	178
More than 12 months, unrealized losses	0
Total, unrealized losses	$ 178		$ 0
Less than 12 months, number of securities | Security	9
More than 12 months, number of securities | Security	0
Total, number of securities | Security	9