Investment Securities - Held-to-Maturity and Available-for-Sale, Scheduled Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	$ 119,692	$ 151,257
Securities Held-to-Maturity, Gross Unrealized Gains	3,586	5,068
Securities Held-to-Maturity, Gross Unrealized Losses	(159)	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	123,119	156,325
Debt Securities, Available-for-sale [Abstract]
Investment securities available-for-sale (amortized cost $274,613 and $221,254, net of allowance for credit losses of $485 and $869 at June 30, 2021 and December 31, 2020, respectively)	274,613	221,254
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	2,656	3,783
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(1,922)	(5,528)
Debt securities, available-for-sale, allowance for credit loss	485	869
Securities Available-for-Sale, Debt Securities, Fair Value	274,862	218,640
U.S. Government Corporations and Agencies [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Securities Held-to-Maturity, Amortized Cost, Within 1 Year	5,000
Securities Held-to-Maturity, Gross Unrealized Gains, Within 1 Year	64
Securities Held-to-Maturity, Gross Unrealized Losses, Within 1 Year	0
Securities, Held to Maturity, Allowance for Credit Loss, Within 1 Year	0
Securities Held-to-Maturity, Fair Value, Within 1 Year	5,064
Securities Held-to-Maturity, Amortized Cost, After 1 Year to 5 Years	1,999	6,998
Securities Held-to-maturity, Gross Unrealized Gains, After 1 Year to 5 Years	41	171
Securities Held-to-Maturity, Gross Unrealized Loss, After 1 Year to 5 Years	0
Securities Held-to-Maturity, Allowance for Credit Loss, After 1 Year to 5 Years	0	0
Securities Held-to-Maturity, Fair Value, After 1 Year to 5 Years	2,040	7,169
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	6,999	6,998
Securities Held-to-Maturity, Gross Unrealized Gains	105	171
Securities Held-to-Maturity, Gross Unrealized Losses	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	7,104	7,169
Debt Securities, Available-for-sale [Abstract]
Debt securities, available-for-sale, allowance for credit loss		0
State and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 Year to 5 Years	3,297	3,560
Securities Available-for-Sale,Gross Unrealized Gain, After 1 Year to 5 Years	15	33
Securities Available-for-Sale, Gross Unrealized Losses, After 1 Year to 5 Years	0	0
Securities Available-for-sale, Allowance for Credit Loss, After 1 Year to 5 Years	0	0
Securities Available-for-Sale, Fair Value, After 1 Year to 5 Years	3,312	3,593
Securities Available-for-Sale, Amortized Cost, After 5 Years to 10 Years		9,881
Securities Available-for-Sale,Gross Unrealized Gain, After 5 Years to 10 Years		63
Securities Available-for-Sale, Gross Unrealized Losses, After 5 Years to 10 Years		0
Securities Available-for-sale, Allowance for Credit Loss, After 5 Years to 10 Years		0
Securities Available-for-Sale, Fair Value, After 5 Years to 10 Years		9,944
Investment securities available-for-sale (amortized cost $274,613 and $221,254, net of allowance for credit losses of $485 and $869 at June 30, 2021 and December 31, 2020, respectively)	3,297	13,441
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	15	96
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	0	0
Debt securities, available-for-sale, allowance for credit loss	0	0
Securities Available-for-Sale, Debt Securities, Fair Value	3,312	13,537
Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Securities Held-to-Maturity Securities, Amortized Cost, After 5 Years to 10 Years	5,076	6,325
Securities Held-to-Maturity, Gross Unrealized Gains, After 5 Years to 10 Years	212	253
Securities Held-to-Maturity, Gross Unrealized Losses, After 5 Years to 10 Years	0	0
Securities, Held-to-maturity, Allowance for Credit Loss, After 5 Years To 10 Years	0	0
Securities Held-to-Maturity, Fair Value, After 5 Years to 10 Years	5,288	6,578
Securities Held-to-Maturity, Amortized Cost, Over 10 Years	107,617	137,934
Securities Held-to-Maturity, Gross Unrealized Gain, Over 10 years	3,269	4,644
Securities Held-to-Maturity, Gross Unrealized Losses, Over 10 years	(159)	0
Securities Held-to-maturity, Allowance for Credit Loss, Over 10 Years	0	0
Securities Held-to-Maturity, Fair Value, After 10 years	110,727	142,578
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	112,693	144,259
Securities Held-to-Maturity, Gross Unrealized Gains	3,481	4,897
Securities Held-to-Maturity, Gross Unrealized Losses	(159)	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Investment securities held-to-maturity (fair value $123,119 and $156,325 at June 30, 2021 and December 31, 2020, respectively)	116,015	149,156
Debt Securities, Available-for-sale [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 Year to 5 Years	243	323
Securities Available-for-Sale,Gross Unrealized Gain, After 1 Year to 5 Years	8	10
Securities Available-for-Sale, Gross Unrealized Losses, After 1 Year to 5 Years	0	0
Securities Available-for-sale, Allowance for Credit Loss, After 1 Year to 5 Years	0
Securities Available-for-Sale, Fair Value, After 1 Year to 5 Years	251	333
Securities Available-for-Sale, Amortized Cost, After 5 Years to 10 Years	1,979	1,664
Securities Available-for-Sale,Gross Unrealized Gain, After 5 Years to 10 Years	80	58
Securities Available-for-Sale, Gross Unrealized Losses, After 5 Years to 10 Years	0	0
Securities Available-for-sale, Allowance for Credit Loss, After 5 Years to 10 Years	0	0
Securities Available-for-Sale, Fair Value, After 5 Years to 10 Years	2,059	1,722
Securities Available-for-Sale, Amortized Cost, Over 10 Years	173,750	110,018
Securities Available-for-Sale,Gross Unrealized Gain, Over 10 Years	1,254	2,153
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 Years	(1,154)	(63)
Securities Available-for-sale, Allowance for Credit Loss, After 10 Years	0	0
Securities Available-for-Sale, Fair Value, Over 10 Years	173,850	112,108
Investment securities available-for-sale (amortized cost $274,613 and $221,254, net of allowance for credit losses of $485 and $869 at June 30, 2021 and December 31, 2020, respectively)	175,972	112,005
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	1,342	2,221
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(1,154)	(63)
Debt securities, available-for-sale, allowance for credit loss	0	0
Securities Available-for-Sale, Debt Securities, Fair Value	176,160	114,163
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Abstract]
Securities Available-for-Sale, Amortized Cost, After 5 Years to 10 Years	576	754
Securities Available-for-Sale,Gross Unrealized Gain, After 5 Years to 10 Years	16	21
Securities Available-for-Sale, Gross Unrealized Losses, After 5 Years to 10 Years	0	0
Securities Available-for-sale, Allowance for Credit Loss, After 5 Years to 10 Years	0	0
Securities Available-for-Sale, Fair Value, After 5 Years to 10 Years	592	775
Securities Available-for-Sale, Amortized Cost, Over 10 Years	3,525	4,561
Securities Available-for-Sale,Gross Unrealized Gain, Over 10 Years	13	0
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 Years	0	(15)
Securities Available-for-sale, Allowance for Credit Loss, After 10 Years	0	16
Securities Available-for-Sale, Fair Value, Over 10 Years	3,538	4,546
Investment securities available-for-sale (amortized cost $274,613 and $221,254, net of allowance for credit losses of $485 and $869 at June 30, 2021 and December 31, 2020, respectively)	4,101	5,315
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	29	21
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	0	(15)
Debt securities, available-for-sale, allowance for credit loss	0	(853)
Securities Available-for-Sale, Debt Securities, Fair Value	4,130	5,321
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 Year	3,998	499
Securities Available-for-Sale,Gross Unrealized Gain, Within 1 Year	25	2
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 Year	0	0
Securities Available-for-sale, Allowance for Credit Loss, Within 1 Year	0
Securities Available-for-Sale, Fair Value, Within 1 Year	4,023	501
Securities Available-for-Sale, Amortized Cost, After 1 Year to 5 Years	26,746	29,498
Securities Available-for-Sale,Gross Unrealized Gain, After 1 Year to 5 Years	1,147	1,440
Securities Available-for-Sale, Gross Unrealized Losses, After 1 Year to 5 Years	(9)	0
Securities Available-for-sale, Allowance for Credit Loss, After 1 Year to 5 Years	16
Securities Available-for-Sale, Fair Value, After 1 Year to 5 Years	27,868	30,922
Securities Available-for-Sale, Amortized Cost, After 5 Years to 10 Years	60,499	60,496
Securities Available-for-Sale,Gross Unrealized Gain, After 5 Years to 10 Years	98	3
Securities Available-for-Sale, Gross Unrealized Losses, After 5 Years to 10 Years	(759)	(5,450)
Securities Available-for-sale, Allowance for Credit Loss, After 5 Years to 10 Years	469
Securities Available-for-Sale, Fair Value, After 5 Years to 10 Years	59,369	54,196
Securities Available-for-sale, Allowance for Credit Loss, After 10 Years		869
Investment securities available-for-sale (amortized cost $274,613 and $221,254, net of allowance for credit losses of $485 and $869 at June 30, 2021 and December 31, 2020, respectively)	91,243	90,493
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	1,270	1,445
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(768)	(5,450)
Debt securities, available-for-sale, allowance for credit loss	485	869	$ 869	$ 0
Securities Available-for-Sale, Debt Securities, Fair Value	$ 91,260	$ 85,619