Investment Securities - Available for Sale (Details) $ in Thousands	Sep. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security	Sep. 30, 2021 USD ($) security
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	$ 646,825	$ 560,142	$ 484,443
Gross Unrealized Gains	3	3,680	5,321
Gross Unrealized Losses	(71,774)	(4,506)	(2,864)
Available-for-Sale at Fair Value	575,054	559,316	486,900
Maturities of Debt Securities, at Amortized Cost:
Within One Year	5,837
From 1 - 5 Years	429,104
From 5 - 10 Years	211,884
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	5,815
From 1 - 5 Years	391,725
From 5 - 10 Years	177,514
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	345,910	337,380	265,227
12 Months or Longer	228,674	30,014	30,313
Total	$ 574,584	$ 367,394	$ 295,540
Number of Securities in a Continuous Loss Position | security	181	54	42
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 34,102	$ 3,520	$ 2,177
12 Months or Longer	37,672	986	687
Total	71,774	4,506	2,864
Collateral Pledged
Available-For-Sale Securities
Available-For-Sale Securities, Pledged as Collateral, at Fair Value	414,929	298,106	361,014
U.S. Government & Agency Obligations
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	180,000	110,000	110,001
Gross Unrealized Gains	0	63	96
Gross Unrealized Losses	(16,035)	(1,698)	(792)
Available-for-Sale at Fair Value	163,965	108,365	109,305
Maturities of Debt Securities, at Amortized Cost:
Within One Year	5,000
From 1 - 5 Years	175,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	5,000
From 1 - 5 Years	158,965
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	71,419	74,088	74,695
12 Months or Longer	92,545	29,214	29,513
Total	$ 163,964	$ 103,302	$ 104,208
Number of Securities in a Continuous Loss Position | security	24	14	14
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 3,581	$ 912	$ 305
12 Months or Longer	12,454	786	487
Total	16,035	1,698	792
U.S. Government & Agency Obligations | US Treasury Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	0
Available-for-Sale at Fair Value	0
U.S. Government & Agency Obligations | Agency Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	180,000	110,000	110,001
Available-for-Sale at Fair Value	163,965	108,365	109,305
State and Municipal Obligations
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	340	400	400
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	0	0	0
Available-for-Sale at Fair Value	340	400	400
Maturities of Debt Securities, at Amortized Cost:
Within One Year	20
From 1 - 5 Years	0
From 5 - 10 Years	320
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	20
From 1 - 5 Years	0
From 5 - 10 Years	320
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	0	0
12 Months or Longer	0	0	0
Total	$ 0	$ 0	$ 0
Number of Securities in a Continuous Loss Position | security	0	0	0
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 0	$ 0
12 Months or Longer	0	0	0
Total	0	0	0
Mortgage- Backed Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	465,485	448,742	373,042
Gross Unrealized Gains	3	3,617	5,225
Gross Unrealized Losses	(55,539)	(2,608)	(1,872)
Available-for-Sale at Fair Value	409,949	449,751	376,395
Maturities of Debt Securities, at Amortized Cost:
Within One Year	817
From 1 - 5 Years	254,104
From 5 - 10 Years	210,564
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	795
From 1 - 5 Years	232,760
From 5 - 10 Years	176,394
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	274,491	263,292	190,532
12 Months or Longer	135,329	0	0
Total	$ 409,820	$ 263,292	$ 190,532
Number of Securities in a Continuous Loss Position | security	156	39	27
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 30,521	$ 2,608	$ 1,872
12 Months or Longer	25,018	0	0
Total	55,539	2,608	1,872
Mortgage- Backed Securities | US Government Agencies Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	8,243	9,386	10,119
Available-for-Sale at Fair Value	7,842	9,371	10,165
Mortgage- Backed Securities | US Government-sponsored Enterprises Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	457,242	439,356	362,923
Available-for-Sale at Fair Value	402,107	440,380	366,230
Corporate and Other Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	1,000	1,000	1,000
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	(200)	(200)	(200)
Available-for-Sale at Fair Value	800	800	800
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	1,000
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	800
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	0	0
12 Months or Longer	800	800	800
Total	$ 800	$ 800	$ 800
Number of Securities in a Continuous Loss Position | security	1	1	1
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 0	$ 0
12 Months or Longer	200	200	200
Total	$ 200	$ 200	$ 200