Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Unit shares	Dec. 31, 2020 shares	Dec. 31, 2019 USD ($) shares	Jan. 01, 2020 USD ($)
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Maximum refinement period of fair values after closing date of acquisition	1 year
Allowance for loan losses			$ 195,225,000
Credit losses			$ 0
Loan minimum balance included in specific reserve analysis	$ 1,000
Number of reporting units | Unit	1
Tax credit carry back period	1 year
Tax credit carry forward period	20 years
Weighted-average anti-dilutive potential common shares | shares	1,079	0	15,815
Federal NMTC Investment [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Tax credit earning period	7 years
Low Income Housing Credit Investments [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Tax credit earning period	10 years
Minimum [Member] | State NMTC Investment [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Tax credit earning period	3 years
Maximum [Member] | State NMTC Investment [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Tax credit earning period	5 years
Buildings [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	30 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	10 years
Software [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Amortization Expense Charged Off Period	3 years
Core Systems [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Amortization Expense Charged Off Period	7 years
ASU 2018-13 [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
Topic 326 [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
Allowance for loan losses				$ 271,966,000
Change in accounting principle, accounting standards update, immaterial effect	true