Stockholders' Equity and Regulatory Capital (Details Textual) - USD ($)	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Stockholders' Equity and Regulatory Capital (Textual)
Declare dividends	$ 64,000
Percentage of increase in capital conservation buffer	1.25%
First Federal MHC waived dividends	$ 1,900,000	$ 1,900,000
Minimum [Member]
Stockholders' Equity and Regulatory Capital (Textual)
Percentage of capital conservation buffer	0.625%
2019 [Member]
Stockholders' Equity and Regulatory Capital (Textual)
Percentage of capital conservation buffer	2.50%
New Capital Rules [Member]
Stockholders' Equity and Regulatory Capital (Textual)
Tier 1 leverage ratio	5.00%
Tier 1 risk-based capital ratio	8.00%
Total risk-based capital ratio	10.00%
Common equity Tier 1 risk-based capital ratio	6.50%

It represents dividends waive during the period ended.

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- Definition

Represents the percentage of capital conservation.

+ References

No definition available.

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- Definition

Represents the increase in percentage of capital conservation.

+ References

No definition available.

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- Definition

Total Capital divided by risk weighted assets as defined in the regulations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1H
-Subparagraph (c)(2)
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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(15)(5))
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- Definition

Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 942
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- Definition

The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

+ References

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- Definition

Tier 1 capital divided by risk weighted assets as defined by regulations.

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