Loans - Classification of Loans By Class (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	$ 1,270,275	$ 1,147,864
SBA loans held for sale	13,029	22,810
Total loans	1,283,304	1,170,674
SBA loans held for investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	41,051	43,999
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	413,652	365,145
SBA loans held for investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	41,051	43,999
SBA 504 loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	29,530	21,871
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	697,075	628,865
Commercial loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	102,555	82,825
Commercial loans \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	516,634	469,696
Commercial loans \| Commercial real estate construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	48,356	54,473
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	413,652	365,145
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	118,497	109,855
Consumer loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	58,794	54,038
Consumer loans \| Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment	$ 59,703	$ 55,817

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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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