Consolidated Balance Sheets (Unaudited) - USD ($)		Sep. 30, 2021		Dec. 31, 2020
Assets
Cash and due from banks		$ 138,148,000		$ 169,460,000
Interest-earning deposits with banks		1,869,683,000		1,127,176,000
Securities
Trading		3,504,000		2,838,000
Equity Securities, FV-NI		22,794,000		22,107,000
Debt Securities, Available-for-sale		1,427,210,000		412,860,000
Held to maturity (fair value $875,306 and $752,177)		865,249,000		724,512,000
Total securities		2,318,757,000		1,162,317,000
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group		33,553,000		58,104,000
Loans
Total loans		8,808,013,000	[1]	9,392,866,000
Less: allowance for credit losses		(92,246,000)	[2]	(113,392,000)
Net loans		8,715,767,000		9,279,474,000
Federal Home Loan Bank stock		8,666,000		10,250,000
Bank premises and equipment, net		123,528,000		116,393,000
Goodwill		506,206,000		506,206,000
Other intangible assets		19,055,000		23,107,000
Cash surrender value of life insurance policies		244,573,000		200,525,000
Other assets		555,375,000		551,289,000
Total assets		14,533,311,000		13,204,301,000
Deposits
Noninterest-bearing demand deposits		4,590,492,000		3,762,306,000
Savings and interest checking accounts		4,484,208,000		4,047,332,000
Money market		2,399,878,000		2,232,903,000
Time certificates of deposit of $100,000 and over		412,129,000		525,424,000
Other time certificates of deposits		373,433,000		425,205,000
Total deposits		12,260,140,000		10,993,170,000
Borrowings
Federal Home Loan Bank borrowings		25,675,000		35,740,000
Long-term Debt		18,750,000		32,773,000
Junior Subordinated Notes		62,853,000		62,851,000
Subordinated Debt		49,767,000		49,696,000
Total borrowings		157,045,000		181,060,000
Other liabilities		360,172,000		327,386,000
Total liabilities		12,777,357,000		11,501,616,000
Commitments and contingencies		0		0
Stockholders' equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none		0		0
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 33,043,812 shares at September 30, 2021 and 32,965,692 shares at December 31, 2020 (includes 135,485 and 135,205 shares of unvested participating restricted stock awards, respectively)		329,000		328,000
Value of shares held in rabbi trust at cost: 84,207 shares at September 30, 2021 and 84,126 shares at December 31, 2020		(3,157,000)		(3,066,000)
Deferred compensation and other retirement benefit obligations		3,157,000		3,066,000
Additional paid in capital		949,316,000		945,638,000
Retained earnings		787,742,000		716,024,000
Accumulated other comprehensive income, net of tax		18,567,000		40,695,000
Total stockholders’ equity		1,755,954,000		1,702,685,000
Total liabilities and stockholders' equity		14,533,311,000		13,204,301,000
Debt Securities, Available-for-sale, Amortized Cost		1,425,392,000		395,453,000
Debt Securities, Held-to-maturity, Fair Value		875,306,000		752,177,000
Interest-bearing Deposit Liabilities		$ 100,000		$ 100,000
Preferred Stock, Shares Authorized		$ 0.01		$ 0.01
Preferred Stock, Shares Authorized		1,000,000		1,000,000
Preferred Stock, Shares Outstanding		0		0
Common Stock, Par or Stated Value Per Share		$ 0.01		$ 0.01
Common Stock, Shares Authorized		75,000,000		75,000,000
Common Stock, Shares, Issued		33,043,812		32,965,692
Common Stock, Shares, Outstanding		33,043,812		32,965,692
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		135,485		135,205
Shares Held in Rabbi Trust at Cost		84,207		84,126
Common Class A [Member]
Stockholders' equity
Common Stock, Shares, Outstanding		33,043,812		32,965,692
Long-term Debt [Member]
Stockholders' equity
Unamortized Debt Issuance Expense		$ 0		$ 40,000
Subordinated Debt [Member]
Stockholders' equity
Unamortized Debt Issuance Expense		233,000		304,000
Junior Subordinated Debt [Member]
Stockholders' equity
Unamortized Debt Issuance Expense		35,000		37,000
Commercial And Industrial [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		1,640,709,000		2,103,152,000
Total loans		1,640,709,000	[1]	2,103,152,000
Less: allowance for credit losses	[2]	(16,014,000)
Commercial Real Estate [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		4,221,259,000		4,173,927,000
Total loans		4,221,259,000	[1]	4,173,927,000
Less: allowance for credit losses	[2]	(37,798,000)
Construction Loans [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		515,415,000		553,929,000
Total loans		515,415,000	[1]	553,929,000
Less: allowance for credit losses	[2]	(4,468,000)
Small Business [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		184,138,000		175,023,000
Total loans		184,138,000	[1]	175,023,000
Less: allowance for credit losses	[2]	(3,667,000)
Residential Real Estate [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		1,222,849,000		1,296,183,000
Total loans		1,222,849,000	[1]	1,296,183,000
Less: allowance for credit losses	[2]	(11,047,000)
Home Equity Loan [Member]
Loans
Total loans	[1]	1,000,468,000
Consumer Portfolio Segment [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		23,175,000		21,862,000
Total loans	[3]	23,175,000		21,862,000
Less: allowance for credit losses	[2]	(384,000)
Senior Lien [Member] | Home Equity Loan [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		592,564,000		633,142,000
Junior Lien [Member] | Home Equity Loan [Member]
Loans
Financing Receivable, before Allowance for Credit Loss		$ 407,904,000		$ 435,648,000

[1] Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.

[2] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $29.1 million and $36.7 million as of September 30, 2021 and September 30, 2020, respectively.

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