Securities Available For Sale - Schedule of Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Fair Value
Less than 12 Months, Fair Value	$ 69,995	$ 102,575
12 Months or More, Fair Value	61,914	10,891
Total fair value	131,909	113,466
Unrealized Losses
Less than 12 Months, Unrealized Losses	(1,128)	(578)
12 Months or More, Unrealized Losses	(1,188)	(120)
Total, unrealized losses	(2,316)	(698)
US Government Agencies Debt Securities
Fair Value
Less than 12 Months, Fair Value	10,962	46,767
12 Months or More, Fair Value	35,605	6,921
Total fair value	46,567	53,688
Unrealized Losses
Less than 12 Months, Unrealized Losses	(93)	(222)
12 Months or More, Unrealized Losses	(391)	(79)
Total, unrealized losses	(484)	(301)
Residential Mortgage-backed Securities of U.S. Government Agencies and Government-Sponsored Enterprises
Fair Value
Less than 12 Months, Fair Value	39,238	42,921
12 Months or More, Fair Value	21,297	3,970
Total fair value	60,535	46,891
Unrealized Losses
Less than 12 Months, Unrealized Losses	(827)	(240)
12 Months or More, Unrealized Losses	(611)	(41)
Total, unrealized losses	(1,438)	(281)
Municipal Bonds
Fair Value
Less than 12 Months, Fair Value	19,795	9,153
12 Months or More, Fair Value	1,446	0
Total fair value	21,241	9,153
Unrealized Losses
Less than 12 Months, Unrealized Losses	(208)	(28)
12 Months or More, Unrealized Losses	(18)	0
Total, unrealized losses	(226)	(28)
Corporate Bonds
Fair Value
Less than 12 Months, Fair Value	0	3,734
12 Months or More, Fair Value	3,566	0
Total fair value	3,566	3,734
Unrealized Losses
Less than 12 Months, Unrealized Losses	0	(88)
12 Months or More, Unrealized Losses	(168)	0
Total, unrealized losses	$ (168)	$ (88)