Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details)

v3.20.2
Note 4 - Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Available for sale, amortized cost $ 832,629 $ 752,181
Available for sale, gross unrealized gain 24,534 8,726
Available for sale, gross unrealized loss (1,035) (1,508)
Available for sale, fair value 856,128 759,399 [1]
Held to maturity, amortized cost 250 250
Held to maturity, gross unrealized gain 0 0
Held to maturity, gross unrealized loss 0 0
Held to maturity debt securities, fair value 250 250 [1]
US Treasury Securities [Member]    
Available for sale, amortized cost 39,978 48,923
Available for sale, gross unrealized gain 604 291
Available for sale, gross unrealized loss 0 (4)
Available for sale, fair value 40,582 49,210
US Government Agencies Debt Securities [Member]    
Available for sale, amortized cost 15,225 18,245
Available for sale, gross unrealized gain 350 143
Available for sale, gross unrealized loss 0 (2)
Available for sale, fair value 15,575 18,386
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 497,442 470,513
Available for sale, gross unrealized gain 19,594 4,859
Available for sale, gross unrealized loss 0 (1,318)
Available for sale, fair value 517,036 474,054
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, amortized cost 45,060 56,951
Available for sale, gross unrealized gain 517 335
Available for sale, gross unrealized loss 0 (14)
Available for sale, fair value 45,577 57,272
Held to maturity, amortized cost 250 250
Held to maturity, gross unrealized gain 0 0
Held to maturity, gross unrealized loss 0 0
Held to maturity debt securities, fair value 250 250
Corporate Debt Securities [Member]    
Available for sale, amortized cost 234,924 157,549
Available for sale, gross unrealized gain 3,469 3,098
Available for sale, gross unrealized loss (1,035) (170)
Available for sale, fair value $ 237,358 $ 160,477
[1] Derived from audited financial statements.