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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

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- Definition

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
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- Definition

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Fair Value, Assets Measured on Recurring Basis Borrowings (Q3) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	$ 10,372		$ 10,372		$ 11,006	$ 14,722
Transfer between level 1 and level 2	0	$ 0	0	$ 0	0	0
Transfer between level 2 and level 1	0	0	0	0	0	0
Transfer into level 3	0	0	0	0	0	0
Transfer out of level 3	0	$ 0	0	$ 0	0	0
Federal Agency Mortgage-backed [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	6,460		6,460		7,956	9,508
Federal Agency Debt [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	3,058		3,058		3,050	5,214
Municipal Bonds [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	854		854
Recurring Basis [Member] \| Federal Agency Mortgage-backed [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	6,460		6,460		7,956	9,508
Recurring Basis [Member] \| Federal Agency Debt [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	3,058		3,058		3,050	5,214
Recurring Basis [Member] \| Municipal Bonds [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	854		854
Recurring Basis [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Federal Agency Mortgage-backed [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	0		0		0	0
Recurring Basis [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Federal Agency Debt [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	0		0		0	1,979
Recurring Basis [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Municipal Bonds [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	0		0
Recurring Basis [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Federal Agency Mortgage-backed [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	6,460		6,460		7,956	9,508
Recurring Basis [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Federal Agency Debt [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	3,058		3,058		3,050	3,235
Recurring Basis [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Municipal Bonds [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	854		854
Recurring Basis [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Federal Agency Mortgage-backed [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	0		0		0	0
Recurring Basis [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Federal Agency Debt [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	0		0		$ 0	$ 0
Recurring Basis [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Municipal Bonds [Member]
Assets Measured on Recurring Basis [Abstract]
Securities available-for-sale	$ 0		$ 0