Fair Value of Assets and Liabilities - Fair Values of Financial Assets and Liabilities on Balance Sheets (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Assets:
Carrying Amount		$ 408,039		$ 374,415
Fair Value		326,457		369,955
Loans and leases, net of deferred fees and costs, Carrying amount	[1]	4,611,207		4,481,600
Liabilities:
Debt securities held to maturity, allowance for credit loss		238		286
Allowance for credit loss		52,866	$ 52,346	63,967	$ 77,382	$ 47,942	$ 50,359
Carrying Amount
Assets:
Cash and cash equivalents		145,184		415,727
Carrying Amount		408,039		374,415
Federal Home Loan Bank ("FHLB") stock		14,683		17,308
Federal Reserve Bank ("FRB") stock		21,237		13,311
Total other investment securities at cost		35,920		30,619
Total other investments		38,707		33,643
Loans and leases, net of deferred fees and costs, Carrying amount		4,611,207		4,481,600
Bank owned life insurance		104,591		73,358
Liabilities:
Deposits		5,865,620		5,862,552
Short-term borrowings		133,611		166,482
Long-term borrowings		104,196		99,475
Fair Value
Assets:
Cash and cash equivalents		145,184		415,727
Fair Value		326,457		369,955
Federal Home Loan Bank ("FHLB") stock		14,683		17,308
Federal Reserve Bank ("FRB") stock		21,237		13,311
Total other investment securities at cost		35,920		30,619
Total other investments		38,707		33,643
Loans and leases, net of deferred fees and costs, Fair value		4,359,959		4,510,605
Bank owned life insurance		104,591		73,358
Liabilities:
Deposits		4,797,388		5,546,552
Short-term borrowings		135,268		164,990
Long-term borrowings		105,490		101,664
U.S. government sponsored agencies
Assets:
Carrying Amount		59,871		36,431
Fair Value		50,908		35,513
Liabilities:
Debt securities held to maturity, allowance for credit loss		0		0
U.S. government sponsored agencies | Carrying Amount
Assets:
Carrying Amount		59,871		36,431
U.S. government sponsored agencies | Fair Value
Assets:
Fair Value		50,908		35,513
States and political subdivisions
Assets:
Carrying Amount		145,490		151,688
Fair Value		107,453		150,138
Liabilities:
Debt securities held to maturity, allowance for credit loss		238		286
States and political subdivisions | Fair Value
Assets:
Fair Value		107,453		150,138
Residential mortgage-backed securities
Assets:
Carrying Amount		111,707		110,708
Fair Value		93,885		110,159
Liabilities:
Debt securities held to maturity, allowance for credit loss		0		0
Residential mortgage-backed securities | Carrying Amount
Assets:
Carrying Amount		111,707		110,708
Residential mortgage-backed securities | Fair Value
Assets:
Fair Value		93,885		110,159
Commercial mortgage-backed securities
Assets:
Carrying Amount		90,971		75,588
Fair Value		74,211		74,145
Liabilities:
Debt securities held to maturity, allowance for credit loss		0		0
Commercial mortgage-backed securities | Carrying Amount
Assets:
Carrying Amount		90,971		75,588
Commercial mortgage-backed securities | Fair Value
Assets:
Fair Value		74,211		74,145
Nonqualified Plan | Carrying Amount
Assets:
Total other investment securities		2,008		2,240
Nonqualified Plan | Fair Value
Assets:
Total other investment securities		2,008		2,240
Other Security Investments | Carrying Amount
Assets:
Total other investment securities		779		784
Other Security Investments | Fair Value
Assets:
Total other investment securities		$ 779		$ 784

[1] Also referred to throughout this Quarterly Report on Form 10-Q as "total loans" and "loans held for investment."