v3.25.2
Fair Value Measurements - Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Financial assets:        
Cash and cash equivalents $ 257,953 $ 205,869 $ 290,491 $ 180,185
Total available for sale debt securities 3,019,796 2,768,915    
Investment securities held to maturity, fair value 298,458 313,733    
FHLBNY stock 127,021 112,767    
Equity securities 19,410 19,110    
Loans, net of allowance for credit losses 18,923,881 18,628,391    
Derivative assets 123,843 179,332    
Financial liabilities:        
Certificates of deposit 3,267,433 3,168,155    
Total deposits 18,708,524 18,623,813    
Borrowings 2,374,660 2,020,435    
Subordinated debentures 404,098 401,608    
Derivative liabilities 123,580 174,548    
Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Cash and cash equivalents 258,925 205,939    
Total available for sale debt securities 319,445 330,598    
Investment securities held to maturity, fair value 0 0    
FHLBNY stock 127,021 112,767    
Equity securities 19,410 19,110    
Loans, net of allowance for credit losses 0 0    
Derivative assets 0 0    
Financial liabilities:        
Deposits other than certificates of deposits 15,441,091 15,455,658    
Certificates of deposit 0 0    
Total deposits 15,441,091 15,455,658    
Borrowings 0 0    
Subordinated debentures 0 0    
Derivative liabilities 0 0    
Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Cash and cash equivalents 0 0    
Total available for sale debt securities 2,700,351 2,438,317    
Investment securities held to maturity, fair value 298,458 313,733    
FHLBNY stock 0 0    
Equity securities 0 0    
Loans, net of allowance for credit losses 0 0    
Derivative assets 122,776 188,940    
Financial liabilities:        
Deposits other than certificates of deposits 0 0    
Certificates of deposit 3,264,245 3,168,216    
Total deposits 3,264,245 3,168,216    
Borrowings 2,377,095 2,017,013    
Subordinated debentures 423,780 423,675    
Derivative liabilities 124,183 172,601    
Significant Unobservable Inputs (Level 3)        
Financial assets:        
Cash and cash equivalents 0 0    
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
FHLBNY stock 0 0    
Equity securities 0 0    
Loans, net of allowance for credit losses 18,938,930 18,442,167    
Derivative assets 0 0    
Financial liabilities:        
Deposits other than certificates of deposits 0 0    
Certificates of deposit 0 0    
Total deposits 0 0    
Borrowings 0 0    
Subordinated debentures 0 0    
Derivative liabilities 0 0    
U.S. Treasury obligations        
Financial assets:        
Total available for sale debt securities 319,445 330,598    
U.S. Treasury obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 319,445 330,598    
U.S. Treasury obligations | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 0 0    
U.S. Treasury obligations | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
Government-agency obligations        
Financial assets:        
Total available for sale debt securities 40,561 107,235    
Investment securities held to maturity, fair value 8,284 9,707    
Government-agency obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
Government-agency obligations | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 40,561 107,235    
Investment securities held to maturity, fair value 8,284 9,707    
Government-agency obligations | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
Mortgage-backed securities        
Financial assets:        
Total available for sale debt securities 2,409,525 2,062,159    
Mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 0 0    
Mortgage-backed securities | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 2,409,525 2,062,159    
Mortgage-backed securities | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
Asset-backed securities        
Financial assets:        
Total available for sale debt securities 44,931 47,563    
Asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 0 0    
Asset-backed securities | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 44,931 47,563    
Asset-backed securities | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
State and municipal obligations        
Financial assets:        
Total available for sale debt securities 109,595 116,917    
Investment securities held to maturity, fair value 286,639 297,674    
State and municipal obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
State and municipal obligations | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 109,595 116,917    
Investment securities held to maturity, fair value 286,639 297,674    
State and municipal obligations | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
Corporate obligations        
Financial assets:        
Total available for sale debt securities 95,739 104,443    
Investment securities held to maturity, fair value 3,535 6,352    
Corporate obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
Corporate obligations | Significant Other Observable  Inputs (Level 2)        
Financial assets:        
Total available for sale debt securities 95,739 104,443    
Investment securities held to maturity, fair value 3,535 6,352    
Corporate obligations | Significant Unobservable Inputs (Level 3)        
Financial assets:        
Total available for sale debt securities 0 0    
Investment securities held to maturity, fair value 0 0    
Carrying Value        
Financial assets:        
Cash and cash equivalents 258,925 205,939    
Total available for sale debt securities 3,019,796 2,768,915    
Investment securities held to maturity, fair value 308,704 327,623    
FHLBNY stock 127,021 112,767    
Equity securities 19,410 19,110    
Loans, net of allowance for credit losses 18,923,881 18,628,391    
Derivative assets 122,776 188,940    
Financial liabilities:        
Deposits other than certificates of deposits 15,441,091 15,455,658    
Certificates of deposit 3,267,433 3,168,155    
Total deposits 18,708,524 18,623,813    
Borrowings 2,374,660 2,020,435    
Subordinated debentures 404,098 401,608    
Derivative liabilities 124,183 172,601    
Carrying Value | U.S. Treasury obligations        
Financial assets:        
Total available for sale debt securities 319,445 330,598    
Carrying Value | Government-agency obligations        
Financial assets:        
Total available for sale debt securities 40,561 107,235    
Investment securities held to maturity, fair value 8,399 9,999    
Carrying Value | Mortgage-backed securities        
Financial assets:        
Total available for sale debt securities 2,409,525 2,062,159    
Carrying Value | Asset-backed securities        
Financial assets:        
Total available for sale debt securities 44,931 47,563    
Carrying Value | State and municipal obligations        
Financial assets:        
Total available for sale debt securities 109,595 116,917    
Investment securities held to maturity, fair value 296,708 311,106    
Carrying Value | Corporate obligations        
Financial assets:        
Total available for sale debt securities 95,739 104,443    
Investment securities held to maturity, fair value 3,597 6,518    
Fair Value        
Financial assets:        
Cash and cash equivalents 258,925 205,939    
Total available for sale debt securities 3,019,796 2,768,915    
Investment securities held to maturity, fair value 298,458 313,733    
FHLBNY stock 127,021 112,767    
Equity securities 19,410 19,110    
Loans, net of allowance for credit losses 18,938,930 18,442,167    
Derivative assets 122,776 188,940    
Financial liabilities:        
Deposits other than certificates of deposits 15,441,091 15,455,658    
Certificates of deposit 3,264,245 3,168,216    
Total deposits 18,705,336 18,623,874    
Borrowings 2,377,095 2,017,013    
Subordinated debentures 423,780 423,675    
Derivative liabilities 124,183 172,601    
Fair Value | U.S. Treasury obligations        
Financial assets:        
Total available for sale debt securities 319,445 330,598    
Fair Value | Government-agency obligations        
Financial assets:        
Total available for sale debt securities 40,561 107,235    
Investment securities held to maturity, fair value 8,284 9,707    
Fair Value | Mortgage-backed securities        
Financial assets:        
Total available for sale debt securities 2,409,525 2,062,159    
Fair Value | Asset-backed securities        
Financial assets:        
Total available for sale debt securities 44,931 47,563    
Fair Value | State and municipal obligations        
Financial assets:        
Total available for sale debt securities 109,595 116,917    
Investment securities held to maturity, fair value 286,639 297,674    
Fair Value | Corporate obligations        
Financial assets:        
Total available for sale debt securities 95,739 104,443    
Investment securities held to maturity, fair value $ 3,535 $ 6,352