Income Taxes - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014
Deferred Tax [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	24.70%	24.70%	35.00%	35.00%
Deferred tax assets:
Allowance for loan losses	$ 10,742	$ 10,516
Basis difference on PCI assets, net	3,677	5,748
Basis difference on Other real estate	81	694
Deferred compensation	2,480	2,719
Goodwill and other intangible assets	989	2,151
Accrued compensation	1,130	646
Unrealized losses on securities available for sale	3,019	1,490
Other deferred tax assets	1,786	2,150
Total deferred tax assets	23,904	26,114
Deferred Tax Liabilities, Other	1,068	855
Deferred tax liabilities:
State tax credits held for sale, net of economic hedge	0	26
Core deposit intangibles	2,112	2,731
Total deferred tax liabilities	3,180	3,612
Deferred Tax Assets, Net	20,724	22,502
Other Assets
Deferred tax liabilities:
Deferred Tax Assets, Net	$ 20,700	$ 22,500