Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details)

v3.21.2
Note 11 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Available for sale, fair value $ 723,324 $ 886,688 [1]
US Treasury Securities [Member]    
Available for sale, fair value 14,179 14,357
US Government Agencies Debt Securities [Member]    
Available for sale, fair value 9,084 15,458
Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 298,548 495,109
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,597 38,115
Corporate Debt Securities [Member]    
Available for sale, fair value 379,916 323,649
Fair Value, Recurring [Member]    
Available for sale, fair value 723,324 886,688
Interest rate cap derivative   139
Total assets at fair value 723,638 886,827
Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 314  
Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 14,179 14,357
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 9,084 15,458
Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 298,548 495,109
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,597 38,115
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value 379,916 323,649
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]    
Available for sale, fair value 0  
Total assets at fair value 0 0
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 0 0
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 706,306 886,688
Interest rate cap derivative   139
Total assets at fair value 706,620 886,827
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 314  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Available for sale, fair value 14,179 14,357
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Available for sale, fair value 9,084 15,458
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Available for sale, fair value 298,548 495,109
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Available for sale, fair value 21,597 38,115
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Available for sale, fair value 362,898 323,649
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]    
Available for sale, fair value 17,018  
Total assets at fair value 17,018 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 $ 17,018 $ 0
[1] Derived from audited financial statements.