Annual report pursuant to Section 13 and 15(d)

Note 2 - Debt Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details)

v3.20.4
Note 2 - Debt Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Available for sale, amortized cost $ 861,156 $ 752,181
Available for sale, gross unrealized gain 26,054 8,726
Available for sale, gross unrealized loss (522) (1,508)
Available for sale debt securities, at fair value 886,688 759,399
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
US Treasury Securities [Member]    
Available for sale, amortized cost 13,993 48,923
Available for sale, gross unrealized gain 364 291
Available for sale, gross unrealized loss 0 (4)
Available for sale debt securities, at fair value 14,357 49,210
US Government Agencies Debt Securities [Member]    
Available for sale, amortized cost 15,228 18,245
Available for sale, gross unrealized gain 230 143
Available for sale, gross unrealized loss 0 (2)
Available for sale debt securities, at fair value 15,458 18,386
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 477,407 470,513
Available for sale, gross unrealized gain 17,720 4,859
Available for sale, gross unrealized loss (18) (1,318)
Available for sale debt securities, at fair value 495,109 474,054
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, amortized cost 37,671 56,951
Available for sale, gross unrealized gain 444 335
Available for sale, gross unrealized loss 0 (14)
Available for sale debt securities, at fair value 38,115 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 316,857 157,549
Available for sale, gross unrealized gain 7,296 3,098
Available for sale, gross unrealized loss (504) (170)
Available for sale debt securities, at fair value $ 323,649 $ 160,477