Loans - Summary of Aging Recorded Investment Past-due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 15,830	$ 5,047
Loans Not Past Due	2,181,104	2,136,968
Total Loans	2,196,934	2,142,015
Non-Accrual Loans	11,437	914
30-59 Days
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,717	2,505
60-89 Days
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,560	1,628
90 Days Or More
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	10,553	914
Real Estate \| Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	96,020	113,235
Total Loans	96,020	113,235
Real Estate \| Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	725	678
Loans Not Past Due	792,543	758,043
Total Loans	793,268	758,721
Non-Accrual Loans	725
Real Estate \| Single-family Residential Mortgages
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,464	2,498
Loans Not Past Due	953,790	878,751
Total Loans	957,254	881,249
Non-Accrual Loans	1,334
Real Estate \| Single-family residential mortgages held for sale
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		458
Loans Not Past Due	108,194	434,064
Total Loans	108,194	434,522
Real Estate \| 30-59 Days \| Single-family Residential Mortgages
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,454	1,548
Real Estate \| 60-89 Days \| Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		678
Real Estate \| 60-89 Days \| Single-family Residential Mortgages
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,560	950
Real Estate \| 60-89 Days \| Single-family residential mortgages held for sale
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		458
Real Estate \| 90 Days Or More \| Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	725
Real Estate \| 90 Days Or More \| Single-family Residential Mortgages
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	450
Commercial \| SBA
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	11,641	1,871
Loans Not Past Due	63,344	82,629
Total Loans	74,985	84,500
Non-Accrual Loans	9,378	914
Commercial \| Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	274,586	304,310
Total Loans	274,586	304,310
Commercial \| 30-59 Days \| SBA
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,263	957
Commercial \| 90 Days Or More \| SBA
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	9,378	$ 914
Other
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	821
Total Loans	$ 821

Amount of financing receivable not past due.

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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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