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Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - shares | 3 Months Ended | 9 Months Ended
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Sep. 30, 2016 | Sep. 30, 2016
Acquisition – Milton Bancorp, Inc., shares (in shares) | 523,518 | 523,518
Common stock issued to ESOP, shares (in shares) |  | 24,572

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