Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest and Dividend Income
Loans receivable	$ 166,094	$ 159,721
Investment securities	4,828	3,067
Federal Home Loan Bank stock	261	217
Deposits with banks	763	315
Total interest and dividend income	171,946	163,320
Interest Expense
Time deposits	6,060	14,009
Other deposits	5,128	5,594
Advances from Federal Home Loan Bank	143	475
Long-term debt	1,424	1,424
Total interest expense	12,755	21,502
Net interest income before provision for credit losses	159,191	141,818
Provision/(reversal) for credit losses	(8,643)	13,558
Net interest income after provision/(reversal) for credit losses	150,548	155,376
Non-Interest Income
Net gains/(losses) from equity securities	5,974	(2,752)
Securities losses, net	0	853
Letters of credit commissions	1,556	1,690
Other operating income	6,677	5,289
Total non-interest income	20,232	10,000
Non-Interest Expense
Salaries and employee benefits	35,475	32,722
Occupancy expense	5,613	5,046
Computer and equipment expense	2,956	3,271
Professional services expense	6,697	4,710
Data processing service expense	2,909	3,655
FDIC and regulatory assessments	1,802	1,925
Marketing expense	947	2,882
Other real estate owned expense	71	94
Amortization of investments in low income housing and alternative energy partnerships	8,287	11,570
Amortization of core deposit intangibles	224	172
Acquisition, integration and restructuring costs	3,936	732
Other operating expense	3,780	4,624
Total non-interest expense	72,697	71,403
Income before income tax expense	98,083	93,973
Income tax expense	23,055	20,589
Net income	75,028	73,384
Other Comprehensive Income, net of tax
Unrealized holding losses on securities available-for-sale	(45,966)	(4,887)
Unrealized holding gains on cash flow hedge derivatives	3,054	1,263
Total other comprehensive loss, net of tax	(42,912)	(3,624)
Total other comprehensive income	$ 32,116	$ 69,760
Net Income Per Common Share:
Basic (in dollars per share)	$ 1.00	$ 0.92
Diluted (in dollars per share)	0.99	0.92
Cash dividends paid per common share (in dollars per share)	$ 0.34	$ 0.31
Average Common Shares Outstanding:
Basic (in shares)	75,331,976	79,530,777
Diluted (in shares)	75,719,375	79,832,305
Deposit Account [Member]
Non-Interest Income
Non-Interest Income	$ 1,671	$ 1,363
Asset Management [Member]
Non-Interest Income
Non-Interest Income	$ 4,354	$ 3,557