Note 20 - Quarterly Financial Information - Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Interest and loan fee income | $ 34,204 | $ 33,145 | $ 33,163 | $ 33,324 | $ 33,209 | $ 33,468 | $ 33,727 | $ 33,647 | $ 33,888 | $ 34,299 | $ 34,425 | $ 33,917 | $ 133,836 | $ 134,051 | $ 136,529 |
Net interest income | 33,733 | 32,672 | 32,687 | 32,844 | 32,709 | 32,945 | 33,186 | 33,095 | 33,325 | 33,714 | 33,808 | 33,258 | 131,936 | 131,935 | 134,105 |
(Reversal of) provision for loan losses | (1,900) | (3,200) | (1,900) | (3,200) | 0 | ||||||||||
Noninterest income | 20,300 | 12,548 | 12,123 | 11,657 | 11,545 | 11,598 | 11,702 | 11,729 | 11,305 | 11,993 | 12,269 | 12,300 | 56,628 | 46,574 | 47,867 |
Noninterest expense | 30,167 | 24,114 | 24,396 | 24,615 | 24,577 | 26,088 | 25,229 | 25,858 | 25,504 | 26,173 | 26,896 | 26,727 | 103,292 | 101,752 | 105,300 |
Income before taxes and equity in undistributed income of subsidiaries | 23,866 | 21,106 | 22,314 | 19,886 | 19,677 | 21,655 | 19,659 | 18,966 | 19,126 | 19,534 | 19,181 | 18,831 | 87,172 | 79,957 | 76,672 |
Net income | $ 4,160 | $ 15,017 | $ 15,799 | $ 15,049 | $ 14,453 | $ 15,628 | $ 14,546 | $ 14,226 | $ 14,578 | $ 14,857 | $ 14,761 | $ 14,557 | $ 50,025 | $ 58,853 | $ 58,753 |
Basic earnings (in dollars per share) | $ 0.16 | $ 0.57 | $ 0.60 | $ 0.58 | $ 0.56 | $ 0.61 | $ 0.57 | $ 0.56 | $ 0.57 | $ 0.58 | $ 0.58 | $ 0.57 | $ 1.90 | $ 2.30 | $ 2.30 |
Diluted earnings (in dollars per share) | 0.16 | 0.57 | 0.60 | 0.57 | 0.56 | 0.61 | 0.57 | 0.56 | 0.57 | 0.58 | 0.58 | 0.57 | 1.89 | 2.29 | 2.30 |
Dividends paid (in dollars per share) | 0.40 | 0.39 | 0.39 | 0.39 | 0.39 | 0.39 | 0.39 | 0.39 | 0.39 | 0.38 | 0.38 | 0.38 | 1.57 | 1.56 | 1.53 |
Share price, common stock (in dollars per share) | 59.55 | 59.55 | |||||||||||||
Minimum [Member] | |||||||||||||||
Share price, common stock (in dollars per share) | 53.96 | 49.54 | 51.31 | 54.12 | 48.20 | 46.61 | 45.86 | 40.72 | 42.96 | 43 | 42.70 | 40.68 | 53.96 | 48.20 | 42.96 |
Maximum [Member] | |||||||||||||||
Share price, common stock (in dollars per share) | $ 63.03 | $ 59.54 | $ 57.78 | $ 64.07 | $ 65.34 | $ 50.96 | $ 51.53 | $ 49.63 | $ 49.64 | $ 51.90 | $ 51.69 | $ 48.44 | $ 63.03 | $ 65.34 | $ 49.64 |