Loans - Average Recorded Investments and Interest Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Impaired [Line Items]
Average recorded investment	$ 2,780	$ 2,979
Interest income recognized on impaired loans	57	13
SBA loans held for investment
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,128	1,183
Interest income recognized on impaired loans	3	4
SBA 504 loans
Financing Receivable, Impaired [Line Items]
Average recorded investment	600	0
Interest income recognized on impaired loans	32	0
Commercial loans \| Other
Financing Receivable, Impaired [Line Items]
Average recorded investment	5	7
Interest income recognized on impaired loans	10	0
Commercial loans \| Commercial real estate
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,047	1,789
Interest income recognized on impaired loans	12	9
Small Business Administration
Financing Receivable, Impaired [Line Items]
Impaired financing receivable average recorded investment, guaranteed by Small Business Administration	$ 182	$ 100

Impaired Financing Receivable Average Recorded Investment, Guaranteed by the Small Business Administration

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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