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)

v3.21.2
Note 4 - Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Available for sale, amortized cost $ 988,835 $ 861,156
Available for sale, gross unrealized gain 27,139 26,054
Available for sale, gross unrealized loss (2,441) (522)
Available for sale, fair value 1,013,533 886,688 [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 13,998 13,993
Available for sale, gross unrealized gain 237 364
Available for sale, gross unrealized loss 0 0
Available for sale, fair value 14,235 14,357
US Government Agencies Debt Securities [Member]    
Available for sale, amortized cost 12,026 15,228
Available for sale, gross unrealized gain 113 230
Available for sale, gross unrealized loss 0 0
Available for sale, fair value 12,139 15,458
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 587,372 477,407
Available for sale, gross unrealized gain 12,840 17,720
Available for sale, gross unrealized loss (1,120) (18)
Available for sale, fair value 599,092 495,109
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, amortized cost 26,045 37,671
Available for sale, gross unrealized gain 293 444
Available for sale, gross unrealized loss (57) 0
Available for sale, fair value 26,281 38,115
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 349,394 316,857
Available for sale, gross unrealized gain 13,656 7,296
Available for sale, gross unrealized loss (1,264) (504)
Available for sale, fair value $ 361,786 $ 323,649
[1] derived from audited financial statements.