Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Unallocated ESOP Shares [Member]
Allocation of ESOP shares (in shares)	4,694	4,695
Retained Earnings [Member]
Cash dividends paid, per share (in dollars per share)		$ 0.115
Common Stock [Member]
Shares repurchased (in shares)	24,963	50,305

Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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