Consolidated Statements of Stockholders' Equity and Mezzanine Equity (Unaudited) (Parentheticals) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 0.54	$ 0.45
Treasury stock purchases (in shares)	14,278	22,633
Redeemable common shares acquired included in treasury stock (in shares)	10,442
Issuance of common stock (in shares)	78,736
Number of shares acquired by ESOP (in shares)	6,299