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)

v3.19.3
Note 4 - Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Available for sale, amortized cost $ 680,761 $ 596,225
Available for sale, gross unrealized gain 8,029 1,545
Available for sale, gross unrealized loss (769) (7,586)
Available for sale, fair value 688,021 590,184 [1]
Held to maturity, amortized cost 250  
Held to maturity, gross unrealized gain 0  
Held to maturity, gross unrealized loss 0  
Held to maturity debt securities, fair value 250 0
US Treasury Securities [Member]    
Available for sale, amortized cost 51,888 58,750
Available for sale, gross unrealized gain 311 75
Available for sale, gross unrealized loss (1) (397)
Available for sale, fair value 52,198 58,428
US Government Agencies Debt Securities [Member]    
Available for sale, amortized cost 18,234 18,784
Available for sale, gross unrealized gain 129 3
Available for sale, gross unrealized loss (2) (222)
Available for sale, fair value 18,361 18,565
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 398,818 309,244
Available for sale, gross unrealized gain 4,425 591
Available for sale, gross unrealized loss (604) (5,531)
Available for sale, fair value 402,639 304,304
US States and Political Subdivisions Debt Securities [Member]    
Available for sale, amortized cost 65,270 106,465
Available for sale, gross unrealized gain 330 208
Available for sale, gross unrealized loss (32) (679)
Available for sale, fair value 65,568 105,994
Held to maturity, amortized cost 250  
Held to maturity, gross unrealized gain 0  
Held to maturity, gross unrealized loss 0  
Held to maturity debt securities, fair value 250  
Corporate Debt Securities [Member]    
Available for sale, amortized cost 146,551 102,982
Available for sale, gross unrealized gain 2,834 668
Available for sale, gross unrealized loss (130) (757)
Available for sale, fair value $ 149,255 $ 102,893
[1] Derived from audited financial statements.