Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 169,460	$ 114,686
Interest-earning deposits with banks	1,127,176	36,288
Securities
Equity Securities, FV-NI	22,107	21,261
Debt Securities, Available-for-sale	412,860	426,424
Held to maturity (fair value $752,177 and $753,263)	724,512	740,806
Total securities	1,162,317	1,190,670
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group	58,104	33,307
Loans
Total loans	9,392,866	8,873,639
Less: allowance for credit losses	(113,392)	(67,740)
Net loans	9,279,474	8,805,899
Federal Home Loan Bank stock	10,250	14,424
Bank premises and equipment, net	116,393	123,674
Goodwill	506,206	506,206
Other intangible assets	23,107	29,286
Cash surrender value of life insurance policies	200,525	197,372
Other assets	551,289	343,353
Total assets	13,204,301	11,395,165
Deposits
Noninterest-bearing demand deposits	3,762,306	2,662,591
Savings and interest checking accounts	4,047,332	3,232,909
Money market	2,232,903	1,856,552
Time certificates of deposit of $100,000 and over	525,424	663,645
Other time certificates of deposits	425,205	731,670
Total deposits	10,993,170	9,147,367
Borrowings
Advances from Federal Home Loan Banks	35,740	115,748
Secured Debt	32,773	74,906
Junior Subordinated Notes	62,851	62,848
Subordinated debentures (less unamortized debt issuance costs of $304 and $399)	49,696	49,601
Total borrowings	181,060	303,103
Other liabilities	327,386	236,552
Total liabilities	11,501,616	9,687,022
Commitments and contingencies	0	0
Stockholders' Equity
Preferred stock, $0.01 par value; authorized: 1,000,000 shares, outstanding: none	$ 0	$ 0
Common Stock, Shares, Outstanding	32,965,692	34,377,388
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	135,205	147,184
Common stock, $0.01 par value; authorized: 75,000,000 shares, issued and outstanding: 32,965,692 shares at December 31, 2020 and 34,377,388 shares at December 31, 2019 (includes 135,205 and 147,184 shares of unvested participating restricted stock awards, respectively)	$ 328	$ 342
Value of shares held in rabbi trust at cost: 84,126 shares at December 31, 2020 and 143,820 shares at December 31, 2019	(3,066)	(4,735)
Compensation and Benefits Trust	3,066	4,735
Additional paid in capital	945,638	1,035,450
Retained earnings	716,024	654,182
Accumulated other comprehensive income, net of tax	40,695	18,169
Total stockholders' equity	1,702,685	1,708,143
Liabilities and Equity	13,204,301	11,395,165
Junior Subordinated Debt [Member]
Stockholders' Equity
Unamortized Debt Issuance Expense	(37)	(40)
Subordinated Debt [Member]
Stockholders' Equity
Unamortized Debt Issuance Expense	(304)	(399)
Long-term Debt [Member]
Stockholders' Equity
Unamortized Debt Issuance Expense	(40)	(94)
Commercial And Industrial [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	2,103,152	1,395,036
Total loans	2,103,152	1,395,036
Less: allowance for credit losses		(17,594)
Commercial Real Estate [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	4,173,927	4,002,359
Total loans	4,173,927	4,002,359
Less: allowance for credit losses		(32,935)
Construction Loans [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	553,929	547,293
Total loans	553,929	547,293
Less: allowance for credit losses		(6,053)
Small Business [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	175,023	174,497
Total loans	175,023	174,497
Less: allowance for credit losses		(1,746)
Residential Real Estate [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	1,296,183	1,590,569
Total loans	1,296,183	1,590,569
Less: allowance for credit losses		(3,440)
Home Equity 1st Position [Member] | Senior Lien [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	633,142	649,255
Home Equity Subordinate Position [Member] | Junior Lien [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	435,648	484,543
Consumer Portfolio Segment [Member]
Loans
Financing Receivable, before Allowance for Credit Loss	21,862	30,087
Total loans	21,862	30,087	[1]
Less: allowance for credit losses		$ (396)
Home Equity Loan [Member]
Loans
Total loans	$ 1,068,790

[1] Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.