Investment Securities, Available-for-sale Securities, Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	$ 523,894	$ 429,360
Gross Unrealized Gains	7,110	9,928
Gross Unrealized Losses	3,417	217
Fair Value	527,587	439,071
U. S. Government Sponsored Enterprises [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	74,970	20,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	505	32
Fair Value	74,465	19,968
State and Political Subdivisions [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	48	103
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	48	103
Mortgage-Backed Securities and Collateralized Mortgage Obligations - Residential [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	344,892	308,432
Gross Unrealized Gains	5,953	7,749
Gross Unrealized Losses	2,528	23
Fair Value	348,317	316,158
Corporate Bonds [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	64,562	59,185
Gross Unrealized Gains	661	916
Gross Unrealized Losses	384	162
Fair Value	64,839	59,939
Small Business Administration-Guaranteed Participation Securities [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	38,737	40,955
Gross Unrealized Gains	495	1,262
Gross Unrealized Losses	0	0
Fair Value	39,232	42,217
Other [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	685	685
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	0
Fair Value	$ 686	$ 686

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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