Goodwill and Intangibles - Summary (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Goodwill
Beginning Balance	$ 4,858	$ 4,858	$ 4,858	$ 4,858	$ 4,858	$ 4,858
Ending Balance	4,858	4,858	4,858	4,858	4,858	4,858
Core Deposit Intangibles
Beginning Balance	1,128	1,192	1,113	1,172	1,192	1,172
Amortization	(64)	(64)	(59)	(59)	(128)	(118)
Ending Balance	$ 1,064	$ 1,128	$ 1,054	$ 1,113	$ 1,064	$ 1,054

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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