Loans, Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period	$ 47,252	$ 35,429
Additions (deductions) [Abstract]
Provision for credit losses	(1,573)	(474)
Initial allowance on loans purchased with credit deterioration		134
Recoveries credited to the allowance	621	548
Loans charged against the allowance	(673)	(456)
Balance at end of period	45,627	46,755
Impact of Adoption [Member] \| ASU 2016-13 [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		11,574
Commercial [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period	11,519	7,401
Additions (deductions) [Abstract]
Provision for credit losses	(852)	(676)
Initial allowance on loans purchased with credit deterioration		95
Recoveries credited to the allowance	77	159
Loans charged against the allowance	0	0
Balance at end of period	10,744	9,530
Commercial [Member] \| Impact of Adoption [Member] \| ASU 2016-13 [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		2,551
Mortgage [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period	19,221	6,998
Additions (deductions) [Abstract]
Provision for credit losses	(178)	(620)
Initial allowance on loans purchased with credit deterioration		18
Recoveries credited to the allowance	171	212
Loans charged against the allowance	(6)	(160)
Balance at end of period	19,208	18,448
Mortgage [Member] \| Impact of Adoption [Member] \| ASU 2016-13 [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		12,000
Installment [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period	3,749	1,112
Additions (deductions) [Abstract]
Provision for credit losses	149	(87)
Initial allowance on loans purchased with credit deterioration		21
Recoveries credited to the allowance	373	177
Loans charged against the allowance	(667)	(296)
Balance at end of period	3,604	3,979
Installment [Member] \| Impact of Adoption [Member] \| ASU 2016-13 [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		3,052
Subjective Allocation [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period	12,763	19,918
Additions (deductions) [Abstract]
Provision for credit losses	(692)	909
Initial allowance on loans purchased with credit deterioration		0
Recoveries credited to the allowance	0	0
Loans charged against the allowance	0	0
Balance at end of period	$ 12,071	14,798
Subjective Allocation [Member] \| Impact of Adoption [Member] \| ASU 2016-13 [Member]
Analysis of allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		$ (6,029)

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Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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