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Parent Company Only Financial Information - Condensed Statements of Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Dividends from: |  |  |  |  |  |  |  |  |  |  |
Income tax benefit |  |  |  |  |  |  |  |  | $ (6,510) | $ (12,392) | $ (7,171)
Net Income | $ 8,945 | $ 9,236 | $ 8,441 | $ 7,097 | $ 3,451 | $ 7,246 | $ 6,683 | $ 6,480 | 33,719 | 23,860 | 20,540
Parent Company |  |  |  |  |  |  |  |  |  |  |
Dividends from: |  |  |  |  |  |  |  |  |  |  |
Bank subsidiary |  |  |  |  |  |  |  |  | 12,029 | 8,840 | 8,700
Non-bank subsidiaries |  |  |  |  |  |  |  |  | 3,000 | 2,250 | 1,200
Other |  |  |  |  |  |  |  |  | 212 | 220 | 230
Total income |  |  |  |  |  |  |  |  | 15,241 | 11,310 | 10,130
Expenses |  |  |  |  |  |  |  |  | (5,184) | (4,957) | (2,611)
Income before income taxes and equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | 10,057 | 6,353 | 7,519
Income tax benefit |  |  |  |  |  |  |  |  | 1,116 | 1,614 | 813
Equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | 24,031 | 17,430 | 13,184
Distributions in excess of net income of non-bank subsidiaries |  |  |  |  |  |  |  |  | (1,485) | (1,537) | (976)
Net Income |  |  |  |  |  |  |  |  | $ 33,719 | $ 23,860 | $ 20,540

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