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)

v3.20.2
Note 11 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale, Total $ 913,049 $ 759,399 [1]
Total assets at fair value 91,139 41,522
US Treasury Securities [Member]    
Debt Securities, Available-for-sale, Total 19,426 49,210
US Government Agencies Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 15,521 18,386
Collateralized Mortgage Backed Securities [Member]    
Debt Securities, Available-for-sale, Total 518,062 474,054
US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 37,408 57,272
Corporate Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 322,632 160,477
Fair Value, Recurring [Member]    
Debt Securities, Available-for-sale, Total 913,049 759,399
Total assets at fair value 913,249  
Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 200  
Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Debt Securities, Available-for-sale, Total 19,426 49,210
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 15,521 18,386
Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Debt Securities, Available-for-sale, Total 518,062 474,054
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 37,408 57,272
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 322,632 160,477
Fair Value, Inputs, Level 1 [Member]    
Total assets at fair value 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]    
Debt Securities, Available-for-sale, Total 0 0
Total assets at fair value 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]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 2 [Member]    
Total assets at fair value 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]    
Debt Securities, Available-for-sale, Total 906,468 752,803
Total assets at fair value 906,668  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member]    
Interest rate cap derivative 200  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Debt Securities, Available-for-sale, Total 19,426 49,210
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 15,521 18,386
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Debt Securities, Available-for-sale, Total 518,062 474,054
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 37,408 57,272
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 316,051 153,881
Fair Value, Inputs, Level 3 [Member]    
Total assets at fair value 91,139 41,522
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]    
Debt Securities, Available-for-sale, Total 6,581 6,596
Total assets at fair value 6,581  
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]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale, Total 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Debt Securities, Available-for-sale, Total $ 6,581 $ 6,596
[1] Derived from audited financial statements.