Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Summary of Company's Tax Provision and Applicable Tax Rates

The following table sets forth information regarding the Company’s tax provision and applicable tax rates for the periods indicated:

	For the Year Ended December 31,
	2022			2021			2020
	(Dollars in thousands)
Combined federal and state income tax provisions	$	56,929		$	34,047		$	13,163
Effective income tax rates	22.18		%	18.04		%	36.67		%

The provision for income taxes is comprised of the following components:

	For the Year Ended December 31,
	2022		2021		2020
	(In thousands)
Current tax expense:
Federal	$	39,453	$	26,114	$	23,002
State	11,453		13,246		10,520
Total current tax expense	50,906		39,360		33,522
Deferred tax expense (benefit):
Federal	3,244		(7,747)		(13,736)
State	2,779		2,434		(6,623)
Total deferred tax expense (benefit)	6,023		(5,313)		(20,359)
Total income tax expense	$	56,929	$	34,047	$	13,163

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation of the U.S. federal statutory rate to the Company’s effective income tax rate is detailed below:

	For the Year Ended December 31,
	2022				2021				2020
	(Dollars in thousands)
Income tax expense at statutory rate	$	53,904	21.00	%	$	39,630	21.00	%	$	7,539	21.00	%
Increase (decrease) resulting from:
State income tax, net of federal tax benefit	11,244		4.38	%	12,387		6.56	%	43		0.12	%
Valuation allowance	(700)		(0.27)	%	(11,300)		(5.99)	%	12,000		33.43	%
Amortization of qualified low-income housing investments	7,503		2.92	%	5,753		3.05	%	4,977		13.86	%
Tax credits	(7,300)		(2.84)	%	(6,539)		(3.46)	%	(7,085)		(19.73)	%
Tax-exempt income	(10,298)		(4.01)	%	(5,665)		(3.00)	%	(4,091)		(11.40)	%
Other, net	2,576		1.00	%	(219)		(0.12)	%	(220)		(0.61)	%
Actual income tax expense	$	56,929	22.18	%	$	34,047	18.04	%	$	13,163	36.67	%

Schedule of Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and deferred tax liabilities are presented below:

	As of December 31,
	2022		2021
	(In thousands)
Deferred tax assets:
Unrealized loss on available for sale securities	$	254,502	$	17,370
Allowance for loan losses	43,686		30,335
Cash flow hedges	18,192		—
Leases	17,447		25,389
Charitable contribution limitation carryover	12,273		18,278
Investment losses	7,918		10,680
Accrued expenses	6,294		6,888
Fixed assets	4,287		3,799
Loan basis difference fair value adjustments	4,009		3,949
Employee benefits	354		13,996
PPP loans fee income	58		2,967
Other	2,083		1,783
Total deferred tax assets before valuation allowance	371,103		135,434
Valuation allowance	—		(700)
Total deferred tax assets	371,103		134,734
Deferred tax liabilities:
Amortization of intangibles	17,565		17,339
Lease obligation	16,383		23,849
Partnerships	2,340		3,324
Trading securities	938		6,482
Cash flow hedges	—		2,878
Other	2,229		4,327
Total deferred tax liabilities	39,455		58,199
Net deferred income tax assets	$	331,648	$	76,535

Schedule of Unrecognized Tax Benefits Roll Forward

The following table presents a reconciliation of the beginning and ending amount of unrecognized tax benefits:

	For the Years Ended December 31,
	2022		2021
	(In thousands)
Beginning	$	7,923	$	—
Additions based on tax positions related to the current year	—		—
Additions for tax positions of prior years	—		7,923
Reductions related to settlements with taxing authorities	—		—
Reductions as a result of a lapse of the applicable statute of limitations	(2,141)		—
Ending	$	5,782	$	7,923