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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Total | Stock Options | Number of Shares | Number of Shares Stock Options | Unearned Shares Issued to ESOP | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period (in shares) at Sep. 30, 2017 |  |  |  | 7,361,077 |  |  |  |  |
Balance at beginning of period at Sep. 30, 2017 | $ 111,000 |  |  | $ 13,286 |  | $ (397) | $ 98,235 | $ (124) | [1]
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income | 3,614 |  |  |  |  |  | 3,614 |  |
Other comprehensive income (loss) | $ (12) |  |  |  |  |  |  | (12) |
Exercise of stock options (in shares) | 6,250 |  |  | 6,250 |  |  |  |  |
Exercise of stock options | $ 61 |  |  | $ 61 |  |  |  |  |
Common stock dividends ($0.11 and $0.23 per share, respectively) | (810) |  |  |  |  |  | (810) |  |
Earned ESOP shares, net of income taxes | 215 |  |  | $ 149 |  | 66 |  |  |
Stock option compensation expense |  |  | $ 44 |  | $ 44 |  |  |  |
Balance at end of period (in shares) at Dec. 31, 2017 |  |  |  | 7,367,327 |  |  |  |  |
Balance at end of period at Dec. 31, 2017 | 114,112 |  |  | $ 13,540 |  | (331) | 101,039 | (136) | [1]
Balance at beginning of period (in shares) at Sep. 30, 2018 |  |  |  | 7,401,177 |  |  |  |  |
Balance at beginning of period at Sep. 30, 2018 | 124,657 | [2] |  | $ 14,394 |  | (133) | 110,525 | (129) | [1]
Balance at beginning of period (in shares) at Sep. 30, 2018 |  |  |  | 7,401,177 |  |  |  |  |
Balance at beginning of period at Sep. 30, 2018 | 124,657 | [2] |  | $ 14,394 |  | (133) | 110,525 | (129) | [1]
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income | 5,615 |  |  |  |  |  | 5,615 |  |
Other comprehensive income (loss) | $ (79) |  |  |  |  |  |  | (79) |
Exercise of stock options (in shares) | 7,400 |  |  | 7,400 |  |  |  |  |
Exercise of stock options | $ 71 |  |  | $ 71 |  |  |  |  |
Common stock dividends ($0.11 and $0.23 per share, respectively) | (1,911) |  |  |  |  |  | (1,911) |  |
Earned ESOP shares, net of income taxes | $ 232 |  |  | $ 166 |  | 66 |  |  |
Stock option compensation expense |  |  | $ 53 |  | $ 53 |  |  |  |
Common stock issued for business combination (in shares) | 904,826 |  |  |  |  |  |  |  |
Common stock issued for business combination | $ 28,267 |  |  |  |  |  |  |  |
Balance at end of period (in shares) at Dec. 31, 2018 |  |  |  | 8,313,403 |  |  |  |  |
Balance at end of period at Dec. 31, 2018 | 156,905 |  |  | $ 42,951 |  | $ (67) | 114,166 | (145) | [1]
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Adoption of ASU 2016-01 | Accounting Standards Update 2016-01 | $ 0 |  |  |  |  |  | $ (63) | $ 63 |
[1] | All amounts are net of income taxes.
[2] | Derived from audited consolidated financial statements.

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