Annual report pursuant to Section 13 and 15(d)

Note 21 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details)

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Note 21 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Available for sale, fair value $ 842,570 $ 886,688
US Treasury Securities [Member]    
Available for sale, fair value 9,104 14,357
US Government Agencies Debt Securities [Member]    
Available for sale, fair value 6,041 15,458
Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 425,161 495,109
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,634 38,115
Corporate Debt Securities [Member]    
Available for sale, fair value 380,630 323,649
Fair Value, Recurring [Member]    
Available for sale, fair value 842,570 886,688
Interest rate cap derivative   139
Total assets at fair value 843,722 886,827
Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 1,152  
Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 9,104 14,357
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 6,041 15,458
Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 425,161 495,109
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,634 38,115
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value 380,630 323,649
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]    
Available for sale, fair value 9,104 14,357
Total assets at fair value 9,104 14,357
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 0  
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 9,104 14,357
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]    
Available for sale, fair value 816,474 872,331
Interest rate cap derivative   139
Total assets at fair value 817,626 872,470
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 1,152  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 6,041 15,458
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 425,161 495,109
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,634 38,115
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value 363,638 323,649
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]    
Available for sale, fair value 16,992  
Total assets at fair value 16,992 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 0  
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value $ 16,992 $ 0