Loans - Classification of Loans By Class (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	$ 1,304,984	$ 1,293,395
SBA loans held for sale	8,010	11,171
Total loans	1,312,994	1,304,566
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	438,431	436,056
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	125,503	123,904
SBA loans held for investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	38,815	39,333
SBA 504 loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	27,129	29,155
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	702,235	694,102
Commercial loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	98,775	104,587
Commercial loans \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	522,511	510,370
Commercial loans \| Commercial real estate construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	53,820	49,990
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	438,431	436,056
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	125,503	123,904
Consumer loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	64,558	64,017
Consumer loans \| Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	$ 60,945	$ 59,887

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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Amount, after allowance for bad debt, of other loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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