Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
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The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

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Ratio of Tier 1 capital to average assets as defined by regulatory framework.

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11. Subsequent Events (Details)	1 Months Ended			3 Months Ended
11. Subsequent Events (Details)	Sep. 30, 2020 USD ($)	Apr. 30, 2019 USD ($)	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2019
Tier One Leverage Capital Ratio				0.0553
Risk Based Capital Ratio				0.0974
Proceeds from preferred stock issuance				$ 675,000	$ 0
Subsequent Event [Member]
Tier One Leverage Capital Ratio	0.1046					0.0566
Risk Based Capital Ratio	0.2345					0.1191
Grant received	$ 3,400,000	$ 2,500,000
Contributed capital	2,800,000
Deferred revenue	$ 617,000
Bryn Mawr Trust \| Subsequent Event [Member]
Proceeds from preferred stock issuance			$ 250,000