New Accounting Standards (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2021	Dec. 31, 2020		Mar. 31, 2020	Dec. 31, 2019
New Accounting Standards [Abstract]
Increase in allowance for credit losses		$ 0
Amortized cost basis of PCD assets, adjusted amount		134
Loans [Abstract]
Loans	[1]		$ 2,733,678
Loans		2,784,224
Allowance for credit losses			(35,429)	[1]	$ (32,495)	$ (26,148)
Allowance for credit losses	[1]	(46,755)
Net Loans			2,698,249
Net Loans		2,737,469
Total Assets		4,426,440	4,204,013
Liabilities and shareholder's equity [Abstract]
Total Liabilities		4,039,111	3,814,491
Retained earnings		47,287	40,145
Total shareholders' equity		387,329	389,522		335,618	350,169
Total Liabilities and Shareholders' Equity		4,426,440	4,204,013
Commercial [Member]
New Accounting Standards [Abstract]
Amortized cost basis of PCD assets, adjusted amount		95
Loans [Abstract]
Loans	[1]		1,242,415
Loans		1,301,223
Allowance for credit losses			(7,401)	[1]	(10,212)	(7,922)
Allowance for credit losses		(9,530)
Mortgage [Member]
New Accounting Standards [Abstract]
Amortized cost basis of PCD assets, adjusted amount		18
Loans [Abstract]
Loans	[1]		1,015,926
Loans	[2]	999,982
Allowance for credit losses			(6,998)	[1]	(7,416)	(8,216)
Allowance for credit losses		(18,448)
Installment [Member]
New Accounting Standards [Abstract]
Amortized cost basis of PCD assets, adjusted amount		21
Loans [Abstract]
Loans	[1]		475,337
Loans	[2]	483,019
Allowance for credit losses			(1,112)	[1]	$ (1,258)	$ (1,283)
Allowance for credit losses		$ (3,979)
ASU 2016-13 [Member]
New Accounting Standards [Abstract]
Allowance for loan losses forecast period		1 year
Increase in allowance for credit losses			11,700
Amortized cost basis of PCD assets, adjusted amount			130
Remaining noncredit discount, amount			340
ASU 2016-13 [Member] | Unfunded Loan Commitments [Member]
New Accounting Standards [Abstract]
Increase in allowance for credit losses			1,500
ASU 2016-13 [Member] | As Reported [Member]
Loans [Abstract]
Loans			2,733,812
Allowance for credit losses			(47,137)
Net Loans			2,686,675
Deferred tax assets	[3]		65,196
Total Assets			4,195,179
Liabilities and shareholder's equity [Abstract]
Allowance for credit losses on unfunded lending commitments	[4]		3,274
Total Liabilities			3,815,960
Retained earnings			29,842
Total shareholders' equity			379,219
Total Liabilities and Shareholders' Equity			4,195,179
ASU 2016-13 [Member] | As Reported [Member] | Commercial [Member]
Loans [Abstract]
Loans			1,242,510
ASU 2016-13 [Member] | As Reported [Member] | Mortgage [Member]
Loans [Abstract]
Loans			1,015,944
ASU 2016-13 [Member] | As Reported [Member] | Installment [Member]
Loans [Abstract]
Loans			475,358
ASU 2016-13 [Member] | Impact, Adjustment [Member]
Loans [Abstract]
Loans			134
Allowance for credit losses			(11,708)
Net Loans			(11,574)
Deferred tax assets	[3]		2,740
Total Assets			(8,834)
Liabilities and shareholder's equity [Abstract]
Allowance for credit losses on unfunded lending commitments	[4]		1,469
Total Liabilities			1,469
Retained earnings			(10,303)
Total shareholders' equity			(10,303)
Total Liabilities and Shareholders' Equity			(8,834)
ASU 2016-13 [Member] | Impact, Adjustment [Member] | Commercial [Member]
Loans [Abstract]
Loans			95
ASU 2016-13 [Member] | Impact, Adjustment [Member] | Mortgage [Member]
Loans [Abstract]
Loans			18
ASU 2016-13 [Member] | Impact, Adjustment [Member] | Installment [Member]
Loans [Abstract]
Loans			21
ASU 2016-13 [Member] | Previously Reported [Member]
Loans [Abstract]
Loans			2,733,678
Allowance for credit losses			(35,429)
Net Loans			2,698,249
Deferred tax assets	[3]		62,456
Total Assets			4,204,013
Liabilities and shareholder's equity [Abstract]
Allowance for credit losses on unfunded lending commitments	[4]		1,805
Total Liabilities			3,814,491
Retained earnings			40,145
Total shareholders' equity			389,522
Total Liabilities and Shareholders' Equity			4,204,013
ASU 2016-13 [Member] | Previously Reported [Member] | Commercial [Member]
Loans [Abstract]
Loans			1,242,415
ASU 2016-13 [Member] | Previously Reported [Member] | Mortgage [Member]
Loans [Abstract]
Loans			1,015,926
ASU 2016-13 [Member] | Previously Reported [Member] | Installment [Member]
Loans [Abstract]
Loans			475,337
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Loans [Abstract]
Allowance for credit losses			(11,574)
Liabilities and shareholder's equity [Abstract]
Retained earnings			10,300
Total shareholders' equity			(10,303)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial [Member]
Loans [Abstract]
Allowance for credit losses			(2,551)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Mortgage [Member]
Loans [Abstract]
Allowance for credit losses			(12,000)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Installment [Member]
Loans [Abstract]
Allowance for credit losses			$ (3,052)

[1] Beginning January 1, 2021, calculation is based on CECL methodology. Prior to January 1, 2021, calculation was based on the probable incurred loss methodology.

[2] Credit scores have been updated within the last twelve months.

[3] Included in Accrued income and other assets in our Condensed Consolidated Statements of Financial Condition.

[4] Included in Accrued expenses and other liabilities in our Condensed Consolidated Statements of Financial Condition.